Eliminate ash::internal namespace

Plus obvious style nit fixes.

BUG=None
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/224113005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261522 0039d316-1c4b-4281-b951-d872f2087c98

466 files changed, 1429 insertions, 2673 deletions

diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 71009e3..17b260e 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -81,7 +81,6 @@ namespace ash {
 namespace {
 
 using base::UserMetricsAction;
-using internal::DisplayInfo;
 
 bool DebugShortcutsEnabled() {
 #if defined(NDEBUG)
@@ -292,12 +291,12 @@ bool HandleRotatePaneFocus(Shell::Direction direction) {
     // TODO(stevet): Not sure if this is the same as IDC_FOCUS_NEXT_PANE.
     case Shell::FORWARD: {
       base::RecordAction(UserMetricsAction("Accel_Focus_Next_Pane"));
-      shell->focus_cycler()->RotateFocus(internal::FocusCycler::FORWARD);
+      shell->focus_cycler()->RotateFocus(FocusCycler::FORWARD);
       break;
     }
     case Shell::BACKWARD: {
       base::RecordAction(UserMetricsAction("Accel_Focus_Previous_Pane"));
-      shell->focus_cycler()->RotateFocus(internal::FocusCycler::BACKWARD);
+      shell->focus_cycler()->RotateFocus(FocusCycler::BACKWARD);
       break;
     }
   }
@@ -350,8 +349,7 @@ bool HandleRotateScreen() {
 }
 
 bool HandleScaleReset() {
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   int64 display_id = display_manager->GetDisplayIdForUIScaling();
   if (display_id == gfx::Display::kInvalidDisplayID)
     return false;
@@ -363,8 +361,7 @@ bool HandleScaleReset() {
 }
 
 bool HandleScaleUI(bool up) {
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   int64 display_id = display_manager->GetDisplayIdForUIScaling();
   if (display_id == gfx::Display::kInvalidDisplayID)
     return false;
@@ -376,8 +373,7 @@ bool HandleScaleUI(bool up) {
   }
 
   const DisplayInfo& display_info = display_manager->GetDisplayInfo(display_id);
-  float next_scale =
-      internal::DisplayManager::GetNextUIScale(display_info, up);
+  float next_scale = DisplayManager::GetNextUIScale(display_info, up);
   display_manager->SetDisplayUIScale(display_id, next_scale);
   return true;
 }
@@ -399,10 +395,10 @@ bool HandleShowKeyboardOverlay() {
 
 void HandleShowMessageCenterBubble() {
   base::RecordAction(UserMetricsAction("Accel_Show_Message_Center_Bubble"));
-  internal::RootWindowController* controller =
-    internal::RootWindowController::ForTargetRootWindow();
-  internal::StatusAreaWidget* status_area_widget =
-    controller->shelf()->status_area_widget();
+  RootWindowController* controller =
+      RootWindowController::ForTargetRootWindow();
+  StatusAreaWidget* status_area_widget =
+      controller->shelf()->status_area_widget();
   if (status_area_widget) {
     WebNotificationTray* notification_tray =
       status_area_widget->web_notification_tray();
@@ -413,8 +409,8 @@ void HandleShowMessageCenterBubble() {
 
 bool HandleShowSystemTrayBubble() {
   base::RecordAction(UserMetricsAction("Accel_Show_System_Tray_Bubble"));
-  internal::RootWindowController* controller =
-    internal::RootWindowController::ForTargetRootWindow();
+  RootWindowController* controller =
+      RootWindowController::ForTargetRootWindow();
   if (!controller->GetSystemTray()->HasSystemBubble()) {
     controller->GetSystemTray()->ShowDefaultView(BUBBLE_CREATE_NEW);
     return true;
@@ -608,8 +604,8 @@ bool HandleToggleTouchViewTesting() {
 }
 
 bool HandleTouchHudClear() {
-  internal::RootWindowController* controller =
-      internal::RootWindowController::ForTargetRootWindow();
+  RootWindowController* controller =
+      RootWindowController::ForTargetRootWindow();
   if (controller->touch_hud_debug()) {
     controller->touch_hud_debug()->Clear();
     return true;
@@ -618,8 +614,8 @@ bool HandleTouchHudClear() {
 }
 
 bool HandleTouchHudModeChange() {
-  internal::RootWindowController* controller =
-      internal::RootWindowController::ForTargetRootWindow();
+  RootWindowController* controller =
+      RootWindowController::ForTargetRootWindow();
   if (controller->touch_hud_debug()) {
     controller->touch_hud_debug()->ChangeToNextMode();
     return true;
diff --git a/ash/accelerators/accelerator_controller_unittest.cc b/ash/accelerators/accelerator_controller_unittest.cc
index 5be401a..93277ea 100644
--- a/ash/accelerators/accelerator_controller_unittest.cc
+++ b/ash/accelerators/accelerator_controller_unittest.cc
@@ -546,12 +546,12 @@ TEST_F(AcceleratorControllerTest, CenterWindowAccelerator) {
   // Add the window to docked container and try to center it.
   window->SetBounds(gfx::Rect(0, 0, 20, 20));
   aura::Window* docked_container = Shell::GetContainer(
-      window->GetRootWindow(), internal::kShellWindowId_DockedContainer);
+      window->GetRootWindow(), kShellWindowId_DockedContainer);
   docked_container->AddChild(window.get());
   gfx::Rect docked_bounds = window->GetBoundsInScreen();
   GetController()->PerformAction(WINDOW_POSITION_CENTER, dummy);
   // It should not get centered and should remain docked.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
   EXPECT_EQ(docked_bounds.ToString(), window->GetBoundsInScreen().ToString());
 }
 
diff --git a/ash/accelerators/accelerator_filter.cc b/ash/accelerators/accelerator_filter.cc
index da552b9..7dc7f08 100644
--- a/ash/accelerators/accelerator_filter.cc
+++ b/ash/accelerators/accelerator_filter.cc
@@ -85,8 +85,6 @@ bool ShouldProcessAcceleratorsNow(const ui::Accelerator& accelerator,
 
 }  // namespace
 
-namespace internal {
-
 ////////////////////////////////////////////////////////////////////////////////
 // AcceleratorFilter, public:
 
@@ -133,5 +131,4 @@ void AcceleratorFilter::OnKeyEvent(ui::KeyEvent* event) {
     event->StopPropagation();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/accelerators/accelerator_filter.h b/ash/accelerators/accelerator_filter.h
index 1df7637..ab919f6 100644
--- a/ash/accelerators/accelerator_filter.h
+++ b/ash/accelerators/accelerator_filter.h
@@ -11,7 +11,6 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
-namespace internal {
 
 // AcceleratorFilter filters key events for AcceleratorControler handling global
 // keyboard accelerators.
@@ -27,7 +26,6 @@ class ASH_EXPORT AcceleratorFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(AcceleratorFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_ACCELERATOR_FILTER_H_
diff --git a/ash/accelerators/accelerator_filter_unittest.cc b/ash/accelerators/accelerator_filter_unittest.cc
index c1a7054..2aa7ba0 100644
--- a/ash/accelerators/accelerator_filter_unittest.cc
+++ b/ash/accelerators/accelerator_filter_unittest.cc
@@ -86,7 +86,7 @@ TEST_F(AcceleratorFilterTest, TestCapsLockMask) {
 // Tests if special hardware keys like brightness and volume are consumed as
 // expected by the shell.
 TEST_F(AcceleratorFilterTest, CanConsumeSystemKeys) {
-  internal::AcceleratorFilter filter;
+  AcceleratorFilter filter;
 
   // Normal keys are not consumed.
   ui::KeyEvent press_a(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE, false);
diff --git a/ash/accelerators/exit_warning_handler.cc b/ash/accelerators/exit_warning_handler.cc
index 8dbafd8..30bc13a 100644
--- a/ash/accelerators/exit_warning_handler.cc
+++ b/ash/accelerators/exit_warning_handler.cc
@@ -186,9 +186,8 @@ void ExitWarningHandler::Show() {
   params.remove_standard_frame = true;
   params.delegate = delegate;
   params.bounds = bounds;
-  params.parent = Shell::GetContainer(
-      root_window,
-      internal::kShellWindowId_SettingBubbleContainer);
+  params.parent =
+      Shell::GetContainer(root_window, kShellWindowId_SettingBubbleContainer);
   widget_.reset(new views::Widget);
   widget_->Init(params);
   widget_->SetContentsView(delegate);
diff --git a/ash/default_accessibility_delegate.cc b/ash/default_accessibility_delegate.cc
index 169b4f7..ee4f27b 100644
--- a/ash/default_accessibility_delegate.cc
+++ b/ash/default_accessibility_delegate.cc
@@ -7,7 +7,6 @@
 #include <limits>
 
 namespace ash {
-namespace internal {
 
 DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
     : spoken_feedback_enabled_(false),
@@ -115,5 +114,4 @@ base::TimeDelta DefaultAccessibilityDelegate::PlayShutdownSound() const {
   return base::TimeDelta();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/default_accessibility_delegate.h b/ash/default_accessibility_delegate.h
index 4804bbd..52f8aafd5 100644
--- a/ash/default_accessibility_delegate.h
+++ b/ash/default_accessibility_delegate.h
@@ -11,7 +11,6 @@
 #include "base/compiler_specific.h"
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT DefaultAccessibilityDelegate : public AccessibilityDelegate {
  public:
@@ -54,7 +53,6 @@ class ASH_EXPORT DefaultAccessibilityDelegate : public AccessibilityDelegate {
   DISALLOW_COPY_AND_ASSIGN(DefaultAccessibilityDelegate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // DEFAULT_ACCESSIBILITY_DELEGATE_H_
diff --git a/ash/desktop_background/desktop_background_controller.cc b/ash/desktop_background/desktop_background_controller.cc
index 7673f29..7305586 100644
--- a/ash/desktop_background/desktop_background_controller.cc
+++ b/ash/desktop_background/desktop_background_controller.cc
@@ -33,7 +33,6 @@
 #include "ui/gfx/rect.h"
 #include "ui/views/widget/widget.h"
 
-using ash::internal::DesktopBackgroundWidgetController;
 using content::BrowserThread;
 
 namespace ash {
@@ -370,25 +369,24 @@ void DesktopBackgroundController::OnDefaultWallpaperLoadCompleted(
 
 void DesktopBackgroundController::InstallDesktopController(
     aura::Window* root_window) {
-  internal::DesktopBackgroundWidgetController* component = NULL;
+  DesktopBackgroundWidgetController* component = NULL;
   int container_id = GetBackgroundContainerId(locked_);
 
   switch (desktop_background_mode_) {
     case BACKGROUND_IMAGE: {
-      views::Widget* widget = internal::CreateDesktopBackground(root_window,
-                                                                container_id);
-      component = new internal::DesktopBackgroundWidgetController(widget);
+      views::Widget* widget =
+          CreateDesktopBackground(root_window, container_id);
+      component = new DesktopBackgroundWidgetController(widget);
       break;
     }
     case BACKGROUND_NONE:
       NOTREACHED();
       return;
   }
-  internal::GetRootWindowController(root_window)->
-      SetAnimatingWallpaperController(
-          new internal::AnimatingDesktopController(component));
+  GetRootWindowController(root_window)->SetAnimatingWallpaperController(
+      new AnimatingDesktopController(component));
 
-  component->StartAnimating(internal::GetRootWindowController(root_window));
+  component->StartAnimating(GetRootWindowController(root_window));
 }
 
 void DesktopBackgroundController::InstallDesktopControllerForAllWindows() {
@@ -407,7 +405,7 @@ bool DesktopBackgroundController::ReparentBackgroundWidgets(int src_container,
       Shell::GetAllRootWindowControllers();
   for (Shell::RootWindowControllerList::iterator iter = controllers.begin();
     iter != controllers.end(); ++iter) {
-    internal::RootWindowController* root_window_controller = *iter;
+    RootWindowController* root_window_controller = *iter;
     // In the steady state (no animation playing) the background widget
     // controller exists in the RootWindowController.
     DesktopBackgroundWidgetController* desktop_controller =
@@ -439,8 +437,8 @@ bool DesktopBackgroundController::ReparentBackgroundWidgets(int src_container,
 }
 
 int DesktopBackgroundController::GetBackgroundContainerId(bool locked) {
-  return locked ? internal::kShellWindowId_LockScreenBackgroundContainer :
-                  internal::kShellWindowId_DesktopBackgroundContainer;
+  return locked ? kShellWindowId_LockScreenBackgroundContainer
+                : kShellWindowId_DesktopBackgroundContainer;
 }
 
 void DesktopBackgroundController::UpdateWallpaper() {
@@ -456,8 +454,7 @@ gfx::Size DesktopBackgroundController::GetMaxDisplaySizeInNative() {
   int width = 0;
   int height = 0;
   std::vector<gfx::Display> displays = Shell::GetScreen()->GetAllDisplays();
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   for (std::vector<gfx::Display>::iterator iter = displays.begin();
        iter != displays.end(); ++iter) {
diff --git a/ash/desktop_background/desktop_background_controller_unittest.cc b/ash/desktop_background/desktop_background_controller_unittest.cc
index 1c48105..bdfc578 100644
--- a/ash/desktop_background/desktop_background_controller_unittest.cc
+++ b/ash/desktop_background/desktop_background_controller_unittest.cc
@@ -41,10 +41,9 @@ namespace ash {
 namespace {
 
 // Containers IDs used for tests.
-const int kDesktopBackgroundId =
-    ash::internal::kShellWindowId_DesktopBackgroundContainer;
+const int kDesktopBackgroundId = ash::kShellWindowId_DesktopBackgroundContainer;
 const int kLockScreenBackgroundId =
-    ash::internal::kShellWindowId_LockScreenBackgroundContainer;
+    ash::kShellWindowId_LockScreenBackgroundContainer;
 
 // Returns number of child windows in a shell window container.
 int ChildCountForContainer(int container_id) {
@@ -111,7 +110,7 @@ class DesktopBackgroundControllerTest : public test::AshTestBase {
     test::AshTestBase::SetUp();
     // Ash shell initialization creates wallpaper. Reset it so we can manually
     // control wallpaper creation and animation in our tests.
-    internal::RootWindowController* root_window_controller =
+    RootWindowController* root_window_controller =
         Shell::GetPrimaryRootWindowController();
     root_window_controller->SetWallpaperController(NULL);
     root_window_controller->SetAnimatingWallpaperController(NULL);
@@ -151,9 +150,10 @@ class DesktopBackgroundControllerTest : public test::AshTestBase {
   // Runs kAnimatingDesktopController's animation to completion.
   // TODO(bshe): Don't require tests to run animations; it's slow.
   void RunDesktopControllerAnimation() {
-    internal::DesktopBackgroundWidgetController* controller =
-        Shell::GetPrimaryRootWindowController()->
-        animating_wallpaper_controller()->GetController(false);
+    DesktopBackgroundWidgetController* controller =
+        Shell::GetPrimaryRootWindowController()
+            ->animating_wallpaper_controller()
+            ->GetController(false);
     ASSERT_NO_FATAL_FAILURE(RunAnimationForWidget(controller->widget()));
   }
 
@@ -321,7 +321,7 @@ TEST_F(DesktopBackgroundControllerTest, ControllerOwnership) {
 
   // The new wallpaper is ready to start animating. kAnimatingDesktopController
   // holds the widget controller instance. kDesktopController will get it later.
-  internal::RootWindowController* root_window_controller =
+  RootWindowController* root_window_controller =
       Shell::GetPrimaryRootWindowController();
   EXPECT_TRUE(root_window_controller->animating_wallpaper_controller()->
               GetController(false));
@@ -363,7 +363,7 @@ TEST_F(DesktopBackgroundControllerTest, BackgroundMovementDuringUnlock) {
 
   // In this state we have two desktop background views stored in different
   // properties. Both are in the lock screen background container.
-  internal::RootWindowController* root_window_controller =
+  RootWindowController* root_window_controller =
       Shell::GetPrimaryRootWindowController();
   EXPECT_TRUE(root_window_controller->animating_wallpaper_controller()->
               GetController(false));
@@ -405,11 +405,11 @@ TEST_F(DesktopBackgroundControllerTest, ChangeWallpaperQuick) {
   // Change to a new wallpaper.
   controller->CreateEmptyWallpaper();
 
-  internal::RootWindowController* root_window_controller =
+  RootWindowController* root_window_controller =
       Shell::GetPrimaryRootWindowController();
-  internal::DesktopBackgroundWidgetController* animating_controller =
-      root_window_controller->animating_wallpaper_controller()->
-      GetController(false);
+  DesktopBackgroundWidgetController* animating_controller =
+      root_window_controller->animating_wallpaper_controller()->GetController(
+          false);
   EXPECT_TRUE(animating_controller);
   EXPECT_TRUE(root_window_controller->wallpaper_controller());
 
diff --git a/ash/desktop_background/desktop_background_view.cc b/ash/desktop_background/desktop_background_view.cc
index b0e3149..1250279 100644
--- a/ash/desktop_background/desktop_background_view.cc
+++ b/ash/desktop_background/desktop_background_view.cc
@@ -28,7 +28,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 // For our scaling ratios we need to round positive numbers.
@@ -224,5 +223,4 @@ views::Widget* CreateDesktopBackground(aura::Window* root_window,
   return desktop_widget;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/desktop_background/desktop_background_view.h b/ash/desktop_background/desktop_background_view.h
index dbd3320..c25f9d9 100644
--- a/ash/desktop_background/desktop_background_view.h
+++ b/ash/desktop_background/desktop_background_view.h
@@ -10,7 +10,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 class DesktopBackgroundView : public views::View,
                               public views::ContextMenuController {
@@ -31,7 +30,6 @@ class DesktopBackgroundView : public views::View,
   DISALLOW_COPY_AND_ASSIGN(DesktopBackgroundView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_VIEW_H_
diff --git a/ash/desktop_background/desktop_background_widget_controller.cc b/ash/desktop_background/desktop_background_widget_controller.cc
index ca2fd03..4a19538 100644
--- a/ash/desktop_background/desktop_background_widget_controller.cc
+++ b/ash/desktop_background/desktop_background_widget_controller.cc
@@ -15,7 +15,6 @@
 #include "ui/views/widget/widget_observer.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 class ShowWallpaperAnimationObserver : public ui::ImplicitAnimationObserver,
@@ -144,5 +143,4 @@ DesktopBackgroundWidgetController* AnimatingDesktopController::GetController(
   return controller_.get();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/desktop_background/desktop_background_widget_controller.h b/ash/desktop_background/desktop_background_widget_controller.h
index 5976f28..6a40a2d 100644
--- a/ash/desktop_background/desktop_background_widget_controller.h
+++ b/ash/desktop_background/desktop_background_widget_controller.h
@@ -13,7 +13,6 @@
 #include "ui/views/widget/widget_observer.h"
 
 namespace ash {
-namespace internal {
 class RootWindowController;
 
 // This class implements a widget-based wallpaper.
@@ -89,7 +88,6 @@ class ASH_EXPORT AnimatingDesktopController {
   DISALLOW_COPY_AND_ASSIGN(AnimatingDesktopController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_WIDGET_CONTROLLER_H_
diff --git a/ash/desktop_background/wallpaper_resizer_unittest.cc b/ash/desktop_background/wallpaper_resizer_unittest.cc
index 12adaf3..240dc8e 100644
--- a/ash/desktop_background/wallpaper_resizer_unittest.cc
+++ b/ash/desktop_background/wallpaper_resizer_unittest.cc
@@ -55,7 +55,6 @@ bool IsColor(const gfx::ImageSkia& image, const uint32_t expect) {
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 class WallpaperResizerTest : public testing::Test,
                              public WallpaperResizerObserver {
@@ -156,5 +155,4 @@ TEST_F(WallpaperResizerTest, ImageId) {
   EXPECT_EQ(WallpaperResizer::GetImageId(image), resizer.original_image_id());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/dip_unittest.cc b/ash/dip_unittest.cc
index 748c78f..d50fd4c 100644
--- a/ash/dip_unittest.cc
+++ b/ash/dip_unittest.cc
@@ -48,7 +48,7 @@ TEST_F(DIPTest, WorkArea) {
   gfx::Screen* screen = Shell::GetScreen();
 
   const gfx::Display display_2x = screen->GetDisplayNearestWindow(root);
-  const internal::DisplayInfo display_info_2x =
+  const DisplayInfo display_info_2x =
       Shell::GetInstance()->display_manager()->GetDisplayInfo(display_2x.id());
 
   // The |bounds_in_pixel()| should report bounds in pixel coordinate.
@@ -87,7 +87,7 @@ TEST_F(DIPTest, WorkAreaForLegacyShelfLayout) {
   gfx::Screen* screen = Shell::GetScreen();
 
   const gfx::Display display_2x = screen->GetDisplayNearestWindow(root);
-  const internal::DisplayInfo display_info_2x =
+  const DisplayInfo display_info_2x =
       Shell::GetInstance()->display_manager()->GetDisplayInfo(display_2x.id());
 
   // The |bounds_in_native()| should report bounds in pixel coordinate.
diff --git a/ash/display/cursor_window_controller.cc b/ash/display/cursor_window_controller.cc
index abc5175..d79f5c5 100644
--- a/ash/display/cursor_window_controller.cc
+++ b/ash/display/cursor_window_controller.cc
@@ -22,7 +22,6 @@
 #include "ui/gfx/image/image_skia_operations.h"
 
 namespace ash {
-namespace internal {
 
 class CursorWindowDelegate : public aura::WindowDelegate {
  public:
@@ -258,5 +257,4 @@ void CursorWindowController::UpdateCursorImage() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/cursor_window_controller.h b/ash/display/cursor_window_controller.h
index fcedced..6e6a709 100644
--- a/ash/display/cursor_window_controller.h
+++ b/ash/display/cursor_window_controller.h
@@ -14,8 +14,6 @@ namespace test{
 class MirrorWindowTestApi;
 }
 
-namespace internal {
-
 class CursorWindowDelegate;
 
 // Draws a mouse cursor on a given container window.
@@ -84,7 +82,6 @@ class CursorWindowController {
   DISALLOW_COPY_AND_ASSIGN(CursorWindowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_
diff --git a/ash/display/display_change_observer_chromeos.cc b/ash/display/display_change_observer_chromeos.cc
index 97c9d26..e1b4c13 100644
--- a/ash/display/display_change_observer_chromeos.cc
+++ b/ash/display/display_change_observer_chromeos.cc
@@ -25,7 +25,6 @@
 #include "ui/gfx/display.h"
 
 namespace ash {
-namespace internal {
 
 using ui::OutputConfigurator;
 
@@ -183,5 +182,4 @@ void DisplayChangeObserver::OnAppTerminating() {
 #endif
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_change_observer_chromeos.h b/ash/display/display_change_observer_chromeos.h
index 03a7dc0..c1675c3 100644
--- a/ash/display/display_change_observer_chromeos.h
+++ b/ash/display/display_change_observer_chromeos.h
@@ -11,7 +11,6 @@
 #include "ui/display/chromeos/output_configurator.h"
 
 namespace ash {
-namespace internal {
 
 struct DisplayMode;
 
@@ -45,7 +44,6 @@ class DisplayChangeObserver : public ui::OutputConfigurator::StateController,
   DISALLOW_COPY_AND_ASSIGN(DisplayChangeObserver);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_AURA_DISPLAY_CHANGE_OBSERVER_CHROMEOS_H
diff --git a/ash/display/display_change_observer_chromeos_unittest.cc b/ash/display/display_change_observer_chromeos_unittest.cc
index f8f6726..ca63b0a 100644
--- a/ash/display/display_change_observer_chromeos_unittest.cc
+++ b/ash/display/display_change_observer_chromeos_unittest.cc
@@ -16,7 +16,6 @@ using ui::OutputConfigurator;
 typedef testing::Test DisplayChangeObserverTest;
 
 namespace ash {
-namespace internal {
 
 TEST_F(DisplayChangeObserverTest, GetDisplayModeList) {
   ScopedVector<const ui::DisplayMode> modes;
@@ -83,5 +82,4 @@ TEST_F(DisplayChangeObserverTest, GetDisplayModeList) {
   EXPECT_EQ(0u, display_modes.size());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_controller.cc b/ash/display/display_controller.cc
index 496eb1e..6a4931d 100644
--- a/ash/display/display_controller.cc
+++ b/ash/display/display_controller.cc
@@ -72,14 +72,13 @@ const int64 kAfterDisplayChangeThrottleTimeoutMs = 500;
 const int64 kCycleDisplayThrottleTimeoutMs = 4000;
 const int64 kSwapDisplayThrottleTimeoutMs = 500;
 
-internal::DisplayManager* GetDisplayManager() {
+DisplayManager* GetDisplayManager() {
   return Shell::GetInstance()->display_manager();
 }
 
 void SetDisplayPropertiesOnHost(aura::WindowTreeHost* host,
                                 const gfx::Display& display) {
-  internal::DisplayInfo info =
-      GetDisplayManager()->GetDisplayInfo(display.id());
+  DisplayInfo info = GetDisplayManager()->GetDisplayInfo(display.id());
 #if defined(OS_CHROMEOS) && defined(USE_X11)
   // Native window property (Atom in X11) that specifies the display's
   // rotation, scale factor and if it's internal display.  They are
@@ -118,11 +117,10 @@ void SetDisplayPropertiesOnHost(aura::WindowTreeHost* host,
                      100 * display.device_scale_factor());
 #endif
   scoped_ptr<aura::RootWindowTransformer> transformer(
-      internal::CreateRootWindowTransformerForDisplay(host->window(),
-                                                      display));
+      CreateRootWindowTransformerForDisplay(host->window(), display));
   host->SetRootWindowTransformer(transformer.Pass());
 
-  internal::DisplayMode mode;
+  DisplayMode mode;
   if (GetDisplayManager()->GetSelectedModeForDisplayId(display.id(), &mode) &&
       mode.refresh_rate > 0.0f) {
     host->compositor()->vsync_manager()->SetAuthoritativeVSyncInterval(
@@ -133,8 +131,6 @@ void SetDisplayPropertiesOnHost(aura::WindowTreeHost* host,
 
 }  // namespace
 
-namespace internal {
-
 // A utility class to store/restore focused/active window
 // when the display configuration has changed.
 class FocusActivationStore {
@@ -201,8 +197,6 @@ class FocusActivationStore {
   DISALLOW_COPY_AND_ASSIGN(FocusActivationStore);
 };
 
-}  // namespace internal
-
 ////////////////////////////////////////////////////////////////////////////////
 // DisplayChangeLimiter
 
@@ -225,9 +219,9 @@ bool DisplayController::DisplayChangeLimiter::IsThrottled() const {
 
 DisplayController::DisplayController()
     : primary_root_window_for_replace_(NULL),
-      focus_activation_store_(new internal::FocusActivationStore()),
-      cursor_window_controller_(new internal::CursorWindowController()),
-      mirror_window_controller_(new internal::MirrorWindowController()) {
+      focus_activation_store_(new FocusActivationStore()),
+      cursor_window_controller_(new CursorWindowController()),
+      mirror_window_controller_(new MirrorWindowController()) {
 #if defined(OS_CHROMEOS)
   if (base::SysInfo::IsRunningOnChromeOS())
     limiter_.reset(new DisplayChangeLimiter);
@@ -244,7 +238,7 @@ void DisplayController::Start() {
   // Created here so that Shell has finished being created. Adds itself
   // as a ShellObserver.
   virtual_keyboard_window_controller_.reset(
-      new internal::VirtualKeyboardWindowController);
+      new VirtualKeyboardWindowController);
   Shell::GetScreen()->AddObserver(this);
   Shell::GetInstance()->display_manager()->set_delegate(this);
 
@@ -265,8 +259,7 @@ void DisplayController::Shutdown() {
   // from the last so that the primary root window gets deleted last.
   for (std::map<int64, aura::Window*>::const_reverse_iterator it =
            root_windows_.rbegin(); it != root_windows_.rend(); ++it) {
-    internal::RootWindowController* controller =
-        internal::GetRootWindowController(it->second);
+    RootWindowController* controller = GetRootWindowController(it->second);
     DCHECK(controller);
     delete controller;
   }
@@ -280,12 +273,12 @@ void DisplayController::InitPrimaryDisplay() {
 }
 
 void DisplayController::InitSecondaryDisplays() {
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
     const gfx::Display& display = display_manager->GetDisplayAt(i);
     if (primary_display_id != display.id()) {
       aura::WindowTreeHost* host = AddWindowTreeHostForDisplay(display);
-      internal::RootWindowController::CreateForSecondaryDisplay(host);
+      RootWindowController::CreateForSecondaryDisplay(host);
     }
   }
   UpdateHostWindowNames();
@@ -317,8 +310,7 @@ void DisplayController::CloseChildWindows() {
   for (std::map<int64, aura::Window*>::const_iterator it =
            root_windows_.begin(); it != root_windows_.end(); ++it) {
     aura::Window* root_window = it->second;
-    internal::RootWindowController* controller =
-        internal::GetRootWindowController(root_window);
+    RootWindowController* controller = GetRootWindowController(root_window);
     if (controller) {
       controller->CloseChildWindows();
     } else {
@@ -335,7 +327,7 @@ aura::Window::Windows DisplayController::GetAllRootWindows() {
   for (std::map<int64, aura::Window*>::const_iterator it =
            root_windows_.begin(); it != root_windows_.end(); ++it) {
     DCHECK(it->second);
-    if (internal::GetRootWindowController(it->second))
+    if (GetRootWindowController(it->second))
       windows.push_back(it->second);
   }
   return windows;
@@ -350,13 +342,12 @@ void DisplayController::SetOverscanInsets(int64 display_id,
   GetDisplayManager()->SetOverscanInsets(display_id, insets_in_dip);
 }
 
-std::vector<internal::RootWindowController*>
+std::vector<RootWindowController*>
 DisplayController::GetAllRootWindowControllers() {
-  std::vector<internal::RootWindowController*> controllers;
+  std::vector<RootWindowController*> controllers;
   for (std::map<int64, aura::Window*>::const_iterator it =
            root_windows_.begin(); it != root_windows_.end(); ++it) {
-    internal::RootWindowController* controller =
-        internal::GetRootWindowController(it->second);
+    RootWindowController* controller = GetRootWindowController(it->second);
     if (controller)
       controllers.push_back(controller);
   }
@@ -364,7 +355,7 @@ DisplayController::GetAllRootWindowControllers() {
 }
 
 void DisplayController::ToggleMirrorMode() {
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   if (display_manager->num_connected_displays() <= 1)
     return;
 
@@ -375,12 +366,12 @@ void DisplayController::ToggleMirrorMode() {
   }
 #if defined(OS_CHROMEOS)
   Shell* shell = Shell::GetInstance();
-  internal::OutputConfiguratorAnimation* animation =
+  OutputConfiguratorAnimation* animation =
       shell->output_configurator_animation();
-  animation->StartFadeOutAnimation(base::Bind(
-      base::IgnoreResult(&internal::DisplayManager::SetMirrorMode),
-      base::Unretained(display_manager),
-      !display_manager->IsMirrored()));
+  animation->StartFadeOutAnimation(
+      base::Bind(base::IgnoreResult(&DisplayManager::SetMirrorMode),
+                 base::Unretained(display_manager),
+                 !display_manager->IsMirrored()));
 #endif
 }
 
@@ -393,7 +384,7 @@ void DisplayController::SwapPrimaryDisplay() {
 
   if (Shell::GetScreen()->GetNumDisplays() > 1) {
 #if defined(OS_CHROMEOS)
-    internal::OutputConfiguratorAnimation* animation =
+    OutputConfiguratorAnimation* animation =
         Shell::GetInstance()->output_configurator_animation();
     if (animation) {
       animation->StartFadeOutAnimation(base::Bind(
@@ -420,7 +411,7 @@ void DisplayController::SetPrimaryDisplayId(int64 id) {
 
 void DisplayController::SetPrimaryDisplay(
     const gfx::Display& new_primary_display) {
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   DCHECK(new_primary_display.is_valid());
   DCHECK(display_manager->IsActiveDisplay(new_primary_display));
 
@@ -451,11 +442,10 @@ void DisplayController::SetPrimaryDisplay(
   DCHECK_NE(primary_root, non_primary_root);
 
   root_windows_[new_primary_display.id()] = primary_root;
-  internal::GetRootWindowSettings(primary_root)->display_id =
-      new_primary_display.id();
+  GetRootWindowSettings(primary_root)->display_id = new_primary_display.id();
 
   root_windows_[old_primary_display.id()] = non_primary_root;
-  internal::GetRootWindowSettings(non_primary_root)->display_id =
+  GetRootWindowSettings(non_primary_root)->display_id =
       old_primary_display.id();
 
   primary_display_id = new_primary_display.id();
@@ -468,7 +458,7 @@ void DisplayController::SetPrimaryDisplay(
       non_primary_root, new_primary_display.GetWorkAreaInsets());
 
   // Update the dispay manager with new display info.
-  std::vector<internal::DisplayInfo> display_info_list;
+  std::vector<DisplayInfo> display_info_list;
   display_info_list.push_back(display_manager->GetDisplayInfo(
       primary_display_id));
   display_info_list.push_back(display_manager->GetDisplayInfo(
@@ -486,12 +476,12 @@ void DisplayController::EnsurePointerInDisplays() {
   gfx::Point point_in_screen = Shell::GetScreen()->GetCursorScreenPoint();
   gfx::Point target_location_in_native;
   int64 closest_distance_squared = -1;
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
 
   aura::Window* dst_root_window = NULL;
   for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
     const gfx::Display& display = display_manager->GetDisplayAt(i);
-    const internal::DisplayInfo display_info =
+    const DisplayInfo display_info =
         display_manager->GetDisplayInfo(display.id());
     aura::Window* root_window = GetRootWindowForDisplayId(display.id());
     if (display_info.bounds_in_native().Contains(
@@ -529,14 +519,14 @@ bool DisplayController::UpdateWorkAreaOfDisplayNearestWindow(
     const aura::Window* window,
     const gfx::Insets& insets) {
   const aura::Window* root_window = window->GetRootWindow();
-  int64 id = internal::GetRootWindowSettings(root_window)->display_id;
+  int64 id = GetRootWindowSettings(root_window)->display_id;
   // if id is |kInvaildDisplayID|, it's being deleted.
   DCHECK(id != gfx::Display::kInvalidDisplayID);
   return GetDisplayManager()->UpdateWorkAreaOfDisplay(id, insets);
 }
 
 void DisplayController::OnDisplayBoundsChanged(const gfx::Display& display) {
-  const internal::DisplayInfo& display_info =
+  const DisplayInfo& display_info =
       GetDisplayManager()->GetDisplayInfo(display.id());
   DCHECK(!display_info.bounds_in_native().IsEmpty());
   aura::WindowTreeHost* host = root_windows_[display.id()]->GetHost();
@@ -549,10 +539,10 @@ void DisplayController::OnDisplayAdded(const gfx::Display& display) {
     DCHECK(root_windows_.empty());
     primary_display_id = display.id();
     root_windows_[display.id()] = primary_root_window_for_replace_;
-    internal::GetRootWindowSettings(primary_root_window_for_replace_)->
-        display_id = display.id();
+    GetRootWindowSettings(primary_root_window_for_replace_)->display_id =
+        display.id();
     primary_root_window_for_replace_ = NULL;
-    const internal::DisplayInfo& display_info =
+    const DisplayInfo& display_info =
         GetDisplayManager()->GetDisplayInfo(display.id());
     aura::WindowTreeHost* host = root_windows_[display.id()]->GetHost();
     host->SetBounds(display_info.bounds_in_native());
@@ -562,7 +552,7 @@ void DisplayController::OnDisplayAdded(const gfx::Display& display) {
       primary_display_id = display.id();
     DCHECK(!root_windows_.empty());
     aura::WindowTreeHost* host = AddWindowTreeHostForDisplay(display);
-    internal::RootWindowController::CreateForSecondaryDisplay(host);
+    RootWindowController::CreateForSecondaryDisplay(host);
   }
 }
 
@@ -590,18 +580,16 @@ void DisplayController::OnDisplayRemoved(const gfx::Display& display) {
 
     // Delete the other root instead.
     root_to_delete = root_windows_[primary_display_id];
-    internal::GetRootWindowSettings(root_to_delete)->display_id = display.id();
+    GetRootWindowSettings(root_to_delete)->display_id = display.id();
 
     // Setup primary root.
     root_windows_[primary_display_id] = primary_root;
-    internal::GetRootWindowSettings(primary_root)->display_id =
-        primary_display_id;
+    GetRootWindowSettings(primary_root)->display_id = primary_display_id;
 
     OnDisplayBoundsChanged(
         GetDisplayManager()->GetDisplayForId(primary_display_id));
   }
-  internal::RootWindowController* controller =
-      internal::GetRootWindowController(root_to_delete);
+  RootWindowController* controller = GetRootWindowController(root_to_delete);
   DCHECK(controller);
   controller->MoveWindowsTo(GetPrimaryRootWindow());
   // Delete most of root window related objects, but don't delete
@@ -614,7 +602,7 @@ void DisplayController::OnHostResized(const aura::WindowTreeHost* host) {
   gfx::Display display = Shell::GetScreen()->GetDisplayNearestWindow(
       const_cast<aura::Window*>(host->window()));
 
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   if (display_manager->UpdateDisplayBounds(display.id(), host->GetBounds())) {
     mirror_window_controller_->UpdateWindow();
     cursor_window_controller_->UpdateContainer();
@@ -622,19 +610,19 @@ void DisplayController::OnHostResized(const aura::WindowTreeHost* host) {
 }
 
 void DisplayController::CreateOrUpdateNonDesktopDisplay(
-    const internal::DisplayInfo& info) {
+    const DisplayInfo& info) {
   switch (GetDisplayManager()->second_display_mode()) {
-    case internal::DisplayManager::MIRRORING:
+    case DisplayManager::MIRRORING:
       mirror_window_controller_->UpdateWindow(info);
       cursor_window_controller_->UpdateContainer();
       virtual_keyboard_window_controller_->Close();
       break;
-    case internal::DisplayManager::VIRTUAL_KEYBOARD:
+    case DisplayManager::VIRTUAL_KEYBOARD:
       mirror_window_controller_->Close();
       cursor_window_controller_->UpdateContainer();
       virtual_keyboard_window_controller_->UpdateWindow(info);
       break;
-    case internal::DisplayManager::EXTENDED:
+    case DisplayManager::EXTENDED:
       NOTREACHED();
   }
 }
@@ -666,8 +654,8 @@ void DisplayController::PostDisplayConfigurationChange() {
 
   focus_activation_store_->Restore();
 
-  internal::DisplayManager* display_manager = GetDisplayManager();
-  internal::DisplayLayoutStore* layout_store = display_manager->layout_store();
+  DisplayManager* display_manager = GetDisplayManager();
+  DisplayLayoutStore* layout_store = display_manager->layout_store();
   if (display_manager->num_connected_displays() > 1) {
     DisplayIdPair pair = display_manager->GetCurrentDisplayIdPair();
     layout_store->UpdateMirrorStatus(pair, display_manager->IsMirrored());
@@ -694,7 +682,7 @@ void DisplayController::PostDisplayConfigurationChange() {
 aura::WindowTreeHost* DisplayController::AddWindowTreeHostForDisplay(
     const gfx::Display& display) {
   static int host_count = 0;
-  const internal::DisplayInfo& display_info =
+  const DisplayInfo& display_info =
       GetDisplayManager()->GetDisplayInfo(display.id());
   const gfx::Rect& bounds_in_native = display_info.bounds_in_native();
   aura::WindowTreeHost* host =
@@ -705,7 +693,7 @@ aura::WindowTreeHost* DisplayController::AddWindowTreeHostForDisplay(
   // No need to remove our observer observer because the DisplayController
   // outlives the host.
   host->AddObserver(this);
-  internal::InitRootWindowSettings(host->window())->display_id = display.id();
+  InitRootWindowSettings(host->window())->display_id = display.id();
   host->InitHost();
 
   root_windows_[display.id()] = host->window();
diff --git a/ash/display/display_controller.h b/ash/display/display_controller.h
index d965131..905b594 100644
--- a/ash/display/display_controller.h
+++ b/ash/display/display_controller.h
@@ -37,7 +37,6 @@ class Insets;
 }
 
 namespace ash {
-namespace internal {
 class CursorWindowController;
 class DisplayInfo;
 class DisplayManager;
@@ -45,13 +44,12 @@ class FocusActivationStore;
 class MirrorWindowController;
 class RootWindowController;
 class VirtualKeyboardWindowController;
-}
 
 // DisplayController owns and maintains RootWindows for each attached
 // display, keeping them in sync with display configuration changes.
 class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
                                      public aura::WindowTreeHostObserver,
-                                     public internal::DisplayManager::Delegate {
+                                     public DisplayManager::Delegate {
  public:
   class ASH_EXPORT Observer {
    public:
@@ -81,16 +79,15 @@ class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
   // TODO(oshima): Move this out from DisplayController;
   static int64 GetPrimaryDisplayId();
 
-  internal::CursorWindowController* cursor_window_controller() {
+  CursorWindowController* cursor_window_controller() {
     return cursor_window_controller_.get();
   }
 
-  internal::MirrorWindowController* mirror_window_controller() {
+  MirrorWindowController* mirror_window_controller() {
     return mirror_window_controller_.get();
   }
 
-  internal::VirtualKeyboardWindowController*
-      virtual_keyboard_window_controller() {
+  VirtualKeyboardWindowController* virtual_keyboard_window_controller() {
     return virtual_keyboard_window_controller_.get();
   }
 
@@ -133,7 +130,7 @@ class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
 
   // Returns all oot window controllers. In non extended desktop
   // mode, this return a RootWindowController for the primary root window only.
-  std::vector<internal::RootWindowController*> GetAllRootWindowControllers();
+  std::vector<RootWindowController*> GetAllRootWindowControllers();
 
   // Gets/Sets/Clears the overscan insets for the specified |display_id|. See
   // display_manager.h for the details.
@@ -157,8 +154,8 @@ class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
   virtual void OnHostResized(const aura::WindowTreeHost* host) OVERRIDE;
 
   // aura::DisplayManager::Delegate overrides:
-  virtual void CreateOrUpdateNonDesktopDisplay(
-      const internal::DisplayInfo& info) OVERRIDE;
+  virtual void CreateOrUpdateNonDesktopDisplay(const DisplayInfo& info)
+      OVERRIDE;
   virtual void CloseNonDesktopDisplay() OVERRIDE;
   virtual void PreDisplayConfigurationChange(bool clear_focus) OVERRIDE;
   virtual void PostDisplayConfigurationChange() OVERRIDE;
@@ -166,8 +163,8 @@ class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
  private:
   FRIEND_TEST_ALL_PREFIXES(DisplayControllerTest, BoundsUpdated);
   FRIEND_TEST_ALL_PREFIXES(DisplayControllerTest, SecondaryDisplayLayout);
-  friend class internal::DisplayManager;
-  friend class internal::MirrorWindowController;
+  friend class DisplayManager;
+  friend class MirrorWindowController;
 
   // Creates a WindowTreeHost for |display| and stores it in the |root_windows_|
   // map.
@@ -207,11 +204,11 @@ class ASH_EXPORT DisplayController : public gfx::DisplayObserver,
   // display.
   aura::Window* primary_root_window_for_replace_;
 
-  scoped_ptr<internal::FocusActivationStore> focus_activation_store_;
+  scoped_ptr<FocusActivationStore> focus_activation_store_;
 
-  scoped_ptr<internal::CursorWindowController> cursor_window_controller_;
-  scoped_ptr<internal::MirrorWindowController> mirror_window_controller_;
-  scoped_ptr<internal::VirtualKeyboardWindowController>
+  scoped_ptr<CursorWindowController> cursor_window_controller_;
+  scoped_ptr<MirrorWindowController> mirror_window_controller_;
+  scoped_ptr<VirtualKeyboardWindowController>
       virtual_keyboard_window_controller_;
 
   // Stores the curent cursor location (in native coordinates) used to
diff --git a/ash/display/display_controller_unittest.cc b/ash/display/display_controller_unittest.cc
index 8c64560..faaa23c 100644
--- a/ash/display/display_controller_unittest.cc
+++ b/ash/display/display_controller_unittest.cc
@@ -509,10 +509,10 @@ TEST_F(DisplayControllerTest, SecondaryDisplayLayout) {
 
 namespace {
 
-internal::DisplayInfo CreateDisplayInfo(int64 id,
-                                        const gfx::Rect& bounds,
-                                        float device_scale_factor) {
-  internal::DisplayInfo info(id, "", false);
+DisplayInfo CreateDisplayInfo(int64 id,
+                              const gfx::Rect& bounds,
+                              float device_scale_factor) {
+  DisplayInfo info(id, "", false);
   info.SetBounds(bounds);
   info.set_device_scale_factor(device_scale_factor);
   return info;
@@ -526,15 +526,14 @@ TEST_F(DisplayControllerTest, MirrorToDockedWithFullscreen) {
   w1->Focus();
 
   // Docked mode.
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
-  const internal::DisplayInfo internal_display_info =
+  const DisplayInfo internal_display_info =
       CreateDisplayInfo(1, gfx::Rect(0, 0, 500, 500), 2.0f);
-  const internal::DisplayInfo external_display_info =
+  const DisplayInfo external_display_info =
       CreateDisplayInfo(2, gfx::Rect(0, 0, 500, 500), 1.0f);
 
-  std::vector<internal::DisplayInfo> display_info_list;
+  std::vector<DisplayInfo> display_info_list;
   // Mirror.
   display_info_list.push_back(internal_display_info);
   display_info_list.push_back(external_display_info);
@@ -583,8 +582,7 @@ TEST_F(DisplayControllerTest, BoundsUpdated) {
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   gfx::Insets insets(5, 5, 5, 5);
   display_manager->UpdateWorkAreaOfDisplay(
       ScreenUtil::GetSecondaryDisplay().id(), insets);
@@ -666,8 +664,7 @@ TEST_F(DisplayControllerTest, SwapPrimary) {
 
   DisplayController* display_controller =
       Shell::GetInstance()->display_controller();
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
@@ -757,8 +754,7 @@ TEST_F(DisplayControllerTest, FindNearestDisplay) {
 
   DisplayController* display_controller =
       Shell::GetInstance()->display_controller();
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
@@ -803,8 +799,7 @@ TEST_F(DisplayControllerTest, SwapPrimaryForLegacyShelfLayout) {
 
   DisplayController* display_controller =
       Shell::GetInstance()->display_controller();
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
@@ -894,8 +889,7 @@ TEST_F(DisplayControllerTest, SwapPrimaryById) {
 
   DisplayController* display_controller =
       Shell::GetInstance()->display_controller();
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
@@ -966,7 +960,7 @@ TEST_F(DisplayControllerTest, SwapPrimaryById) {
 
   // Adding 2nd display with the same ID.  The 2nd display should become primary
   // since secondary id is still stored as desirable_primary_id.
-  std::vector<internal::DisplayInfo> display_info_list;
+  std::vector<DisplayInfo> display_info_list;
   display_info_list.push_back(
       display_manager->GetDisplayInfo(primary_display.id()));
   display_info_list.push_back(
@@ -988,14 +982,14 @@ TEST_F(DisplayControllerTest, SwapPrimaryById) {
   // Deleting 2nd display and adding 2nd display with a different ID.  The 2nd
   // display shouldn't become primary.
   UpdateDisplay("200x200");
-  internal::DisplayInfo third_display_info(
+  DisplayInfo third_display_info(
       secondary_display.id() + 1, std::string(), false);
   third_display_info.SetBounds(secondary_display.bounds());
   ASSERT_NE(primary_display.id(), third_display_info.id());
 
-  const internal::DisplayInfo& primary_display_info =
+  const DisplayInfo& primary_display_info =
       display_manager->GetDisplayInfo(primary_display.id());
-  std::vector<internal::DisplayInfo> display_info_list2;
+  std::vector<DisplayInfo> display_info_list2;
   display_info_list2.push_back(primary_display_info);
   display_info_list2.push_back(third_display_info);
   display_manager->OnNativeDisplaysChanged(display_info_list2);
@@ -1121,8 +1115,7 @@ TEST_F(DisplayControllerTest, Rotate) {
   if (!SupportsMultipleDisplays())
     return;
 
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
@@ -1212,8 +1205,7 @@ TEST_F(DisplayControllerTest, ScaleRootWindow) {
   generator.MoveMouseToInHost(599, 200);
   EXPECT_EQ("449,150", event_handler.GetLocationAndReset());
 
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   display_manager->SetDisplayUIScale(display1.id(), 1.25f);
   display1 = Shell::GetScreen()->GetPrimaryDisplay();
   display2 = ScreenUtil::GetSecondaryDisplay();
@@ -1320,10 +1312,10 @@ TEST_F(DisplayControllerTest, ConvertHostToRootCoords) {
 
 namespace {
 
-internal::DisplayInfo CreateDisplayInfo(int64 id,
-                                        int y,
-                                        gfx::Display::Rotation rotation) {
-  internal::DisplayInfo info(id, "", false);
+DisplayInfo CreateDisplayInfo(int64 id,
+                              int y,
+                              gfx::Display::Rotation rotation) {
+  DisplayInfo info(id, "", false);
   info.SetBounds(gfx::Rect(0, y, 500, 500));
   info.set_rotation(rotation);
   return info;
@@ -1337,17 +1329,16 @@ TEST_F(DisplayControllerTest, DockToSingle) {
   if (!SupportsMultipleDisplays())
     return;
 
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   const int64 internal_id = 1;
 
-  const internal::DisplayInfo internal_display_info =
+  const DisplayInfo internal_display_info =
       CreateDisplayInfo(internal_id, 0, gfx::Display::ROTATE_0);
-  const internal::DisplayInfo external_display_info =
+  const DisplayInfo external_display_info =
       CreateDisplayInfo(2, 1, gfx::Display::ROTATE_90);
 
-  std::vector<internal::DisplayInfo> display_info_list;
+  std::vector<DisplayInfo> display_info_list;
   // Extended
   display_info_list.push_back(internal_display_info);
   display_info_list.push_back(external_display_info);
diff --git a/ash/display/display_error_observer_chromeos.cc b/ash/display/display_error_observer_chromeos.cc
index a9fcb1a..72b7639 100644
--- a/ash/display/display_error_observer_chromeos.cc
+++ b/ash/display/display_error_observer_chromeos.cc
@@ -17,7 +17,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 const char kDisplayErrorNotificationId[] = "chrome://settings/display/error";
@@ -70,5 +69,4 @@ base::string16 DisplayErrorObserver::
   return base::string16();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_error_observer_chromeos.h b/ash/display/display_error_observer_chromeos.h
index cca2e0a..3ee0d1e 100644
--- a/ash/display/display_error_observer_chromeos.h
+++ b/ash/display/display_error_observer_chromeos.h
@@ -11,7 +11,6 @@
 #include "ui/display/chromeos/output_configurator.h"
 
 namespace ash {
-namespace internal {
 
 // The class to observe the output failures and shows the error dialog when
 // necessary.
@@ -33,7 +32,6 @@ class ASH_EXPORT DisplayErrorObserver
   DISALLOW_COPY_AND_ASSIGN(DisplayErrorObserver);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_
diff --git a/ash/display/display_error_observer_chromeos_unittest.cc b/ash/display/display_error_observer_chromeos_unittest.cc
index dbc2c0e..b43dd21 100644
--- a/ash/display/display_error_observer_chromeos_unittest.cc
+++ b/ash/display/display_error_observer_chromeos_unittest.cc
@@ -14,7 +14,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 class DisplayErrorObserverTest : public test::AshTestBase {
  protected:
@@ -81,5 +80,4 @@ TEST_F(DisplayErrorObserverTest, CallWithDifferentState) {
             GetMessageContents());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_info.cc b/ash/display/display_info.cc
index e3a4b63..1aa0583 100644
--- a/ash/display/display_info.cc
+++ b/ash/display/display_info.cc
@@ -21,7 +21,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 
 DisplayMode::DisplayMode()
     : refresh_rate(0.0f), interlaced(false), native(false) {}
@@ -316,5 +315,4 @@ bool DisplayInfo::IsColorProfileAvailable(
                    profile) != available_color_profiles_.end();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_info.h b/ash/display/display_info.h
index 14af285..51f570a 100644
--- a/ash/display/display_info.h
+++ b/ash/display/display_info.h
@@ -15,7 +15,6 @@
 #include "ui/gfx/rect.h"
 
 namespace ash {
-namespace internal {
 
 // A struct that represents the display's mode info.
 struct ASH_EXPORT DisplayMode {
@@ -225,7 +224,6 @@ class ASH_EXPORT DisplayInfo {
   std::vector<ui::ColorCalibrationProfile> available_color_profiles_;
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  //  ASH_DISPLAY_DISPLAY_INFO_H_
diff --git a/ash/display/display_info_unittest.cc b/ash/display/display_info_unittest.cc
index 50c06cf..507dfa7 100644
--- a/ash/display/display_info_unittest.cc
+++ b/ash/display/display_info_unittest.cc
@@ -7,7 +7,6 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
-namespace internal {
 
 typedef testing::Test DisplayInfoTest;
 
@@ -58,5 +57,4 @@ TEST_F(DisplayInfoTest, CreateFromSpec) {
   EXPECT_FALSE(info.display_modes()[2].native);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_layout_store.cc b/ash/display/display_layout_store.cc
index 63b1d60..a3aed0b 100644
--- a/ash/display/display_layout_store.cc
+++ b/ash/display/display_layout_store.cc
@@ -11,7 +11,6 @@
 #include "ui/gfx/display.h"
 
 namespace ash {
-namespace internal {
 
 DisplayLayoutStore::DisplayLayoutStore() {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
@@ -90,5 +89,4 @@ DisplayLayout DisplayLayoutStore::CreateDisplayLayout(
   return layout;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_layout_store.h b/ash/display/display_layout_store.h
index 67c3c2e..a967537 100644
--- a/ash/display/display_layout_store.h
+++ b/ash/display/display_layout_store.h
@@ -11,7 +11,6 @@
 #include "ash/display/display_layout.h"
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT DisplayLayoutStore {
  public:
@@ -63,7 +62,6 @@ class ASH_EXPORT DisplayLayoutStore {
   DISALLOW_COPY_AND_ASSIGN(DisplayLayoutStore);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_LAYOUT_STORE_H_
diff --git a/ash/display/display_manager.cc b/ash/display/display_manager.cc
index fb4fec7..bf7dbca 100644
--- a/ash/display/display_manager.cc
+++ b/ash/display/display_manager.cc
@@ -43,7 +43,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 typedef std::vector<gfx::Display> DisplayList;
 typedef std::vector<DisplayInfo> DisplayInfoList;
 
@@ -1117,5 +1116,4 @@ void DisplayManager::UpdateDisplayBoundsForLayout(
   secondary_display->UpdateWorkAreaFromInsets(insets);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/display_manager.h b/ash/display/display_manager.h
index c672524..11b9955 100644
--- a/ash/display/display_manager.h
+++ b/ash/display/display_manager.h
@@ -30,14 +30,13 @@ class Screen;
 namespace ash {
 class AcceleratorControllerTest;
 class DisplayController;
+class DisplayLayoutStore;
 class ScreenAsh;
 
 namespace test {
 class DisplayManagerTestApi;
 class SystemGestureEventFilterTest;
 }
-namespace internal {
-class DisplayLayoutStore;
 
 // DisplayManager maintains the current display configurations,
 // and notifies observers when configuration changes.
@@ -365,7 +364,6 @@ private:
   DISALLOW_COPY_AND_ASSIGN(DisplayManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_
diff --git a/ash/display/display_manager_unittest.cc b/ash/display/display_manager_unittest.cc
index 85df8bb..33c2536 100644
--- a/ash/display/display_manager_unittest.cc
+++ b/ash/display/display_manager_unittest.cc
@@ -24,7 +24,6 @@
 #include "ui/gfx/screen_type_delegate.h"
 
 namespace ash {
-namespace internal {
 
 using std::vector;
 using std::string;
@@ -1230,5 +1229,4 @@ TEST_F(ScreenShutdownTest, ScreenAfterShutdown) {
   UpdateDisplay("500x300,800x400");
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/event_transformation_handler.cc b/ash/display/event_transformation_handler.cc
index b465ef2..2ea462a 100644
--- a/ash/display/event_transformation_handler.cc
+++ b/ash/display/event_transformation_handler.cc
@@ -21,7 +21,6 @@
 #endif  // defined(OS_CHROMEOS)
 
 namespace ash {
-namespace internal {
 namespace {
 
 // Boost factor for non-integrated displays.
@@ -90,5 +89,4 @@ void EventTransformationHandler::OnTouchEvent(ui::TouchEvent* event) {
 }
 #endif  // defined(OS_CHROMEOS)
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/event_transformation_handler.h b/ash/display/event_transformation_handler.h
index da9560f..0d3c7e0 100644
--- a/ash/display/event_transformation_handler.h
+++ b/ash/display/event_transformation_handler.h
@@ -11,8 +11,6 @@
 
 namespace ash {
 
-namespace internal {
-
 // An event filter that transforms input event properties in extended desktop
 // environment.
 class ASH_EXPORT EventTransformationHandler : public ui::EventHandler {
@@ -43,7 +41,6 @@ class ASH_EXPORT EventTransformationHandler : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(EventTransformationHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_EVENT_TRANSFORMATION_HANDLER_H_
diff --git a/ash/display/mirror_window_controller.cc b/ash/display/mirror_window_controller.cc
index a766e7d..69de042 100644
--- a/ash/display/mirror_window_controller.cc
+++ b/ash/display/mirror_window_controller.cc
@@ -34,7 +34,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 namespace {
 
 #if defined(USE_X11)
@@ -121,9 +120,8 @@ void MirrorWindowController::UpdateWindow(const DisplayInfo& display_info) {
       Shell::GetScreen()->GetPrimaryDisplay().id());
   DCHECK(display_manager->IsMirrored());
   scoped_ptr<aura::RootWindowTransformer> transformer(
-      internal::CreateRootWindowTransformerForMirroredDisplay(
-          source_display_info,
-          display_info));
+      CreateRootWindowTransformerForMirroredDisplay(source_display_info,
+                                                    display_info));
   host_->SetRootWindowTransformer(transformer.Pass());
 }
 
@@ -171,10 +169,8 @@ MirrorWindowController::CreateRootWindowTransformer() const {
       Shell::GetScreen()->GetPrimaryDisplay().id());
   DCHECK(display_manager->IsMirrored());
   return scoped_ptr<aura::RootWindowTransformer>(
-      internal::CreateRootWindowTransformerForMirroredDisplay(
-          source_display_info,
-          mirror_display_info));
+      CreateRootWindowTransformerForMirroredDisplay(source_display_info,
+                                                    mirror_display_info));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/mirror_window_controller.h b/ash/display/mirror_window_controller.h
index c70e9d8..89b2b61 100644
--- a/ash/display/mirror_window_controller.h
+++ b/ash/display/mirror_window_controller.h
@@ -26,13 +26,12 @@ class Reflector;
 }
 
 namespace ash {
+class DisplayInfo;
+
 namespace test{
 class MirrorWindowTestApi;
 }
 
-namespace internal {
-class DisplayInfo;
-
 // An object that copies the content of the primary root window to a
 // mirror window. This also draws a mouse cursor as the mouse cursor
 // is typically drawn by the window system.
@@ -71,7 +70,6 @@ class ASH_EXPORT MirrorWindowController : public aura::WindowTreeHostObserver {
   DISALLOW_COPY_AND_ASSIGN(MirrorWindowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_MIRROR_WINDOW_CONTROLLER_H_
diff --git a/ash/display/mirror_window_controller_unittest.cc b/ash/display/mirror_window_controller_unittest.cc
index a64a6aa..15f8c6a 100644
--- a/ash/display/mirror_window_controller_unittest.cc
+++ b/ash/display/mirror_window_controller_unittest.cc
@@ -20,7 +20,6 @@
 #include "ui/base/hit_test.h"
 
 namespace ash {
-namespace internal {
 
 namespace {
 DisplayInfo CreateDisplayInfo(int64 id, const gfx::Rect& bounds) {
@@ -287,5 +286,4 @@ TEST_F(MirrorOnBootTest, MAYBE_MirrorOnBoot) {
   EXPECT_TRUE(test_api.GetHost());
 }
 
-}  // namsspace internal
 }  // namespace ash
diff --git a/ash/display/mouse_cursor_event_filter.cc b/ash/display/mouse_cursor_event_filter.cc
index a91fc64..cbc2207 100644
--- a/ash/display/mouse_cursor_event_filter.cc
+++ b/ash/display/mouse_cursor_event_filter.cc
@@ -22,7 +22,6 @@
 #include "ui/gfx/screen.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 // Maximum size on the display edge that initiate snapping phantom window,
@@ -262,5 +261,4 @@ void MouseCursorEventFilter::UpdateVerticalIndicatorWindowBounds() {
   src_indicator_bounds_.set_height(lower_indicator_y - upper_indicator_y);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/mouse_cursor_event_filter.h b/ash/display/mouse_cursor_event_filter.h
index b05456e..e7201ed 100644
--- a/ash/display/mouse_cursor_event_filter.h
+++ b/ash/display/mouse_cursor_event_filter.h
@@ -19,8 +19,6 @@ class Window;
 
 namespace ash {
 class DisplayController;
-
-namespace internal {
 class SharedDisplayEdgeIndicator;
 
 // An event filter that controls mouse location in extended desktop
@@ -99,7 +97,6 @@ class ASH_EXPORT MouseCursorEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(MouseCursorEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_MOUSE_CURSOR_EVENT_FILTER_H
diff --git a/ash/display/mouse_cursor_event_filter_unittest.cc b/ash/display/mouse_cursor_event_filter_unittest.cc
index 0f02358..1b34456 100644
--- a/ash/display/mouse_cursor_event_filter_unittest.cc
+++ b/ash/display/mouse_cursor_event_filter_unittest.cc
@@ -15,7 +15,6 @@
 #include "ui/gfx/screen.h"
 
 namespace ash {
-namespace internal {
 
 class MouseCursorEventFilterTest : public test::AshTestBase {
  public:
@@ -376,5 +375,4 @@ TEST_F(MouseCursorEventFilterTest, CursorDeviceScaleFactor) {
   EXPECT_EQ(1.0f, cursor_test_api.GetDisplay().device_scale_factor());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/output_configurator_animation.cc b/ash/display/output_configurator_animation.cc
index 983e574..8d02a2f 100644
--- a/ash/display/output_configurator_animation.cc
+++ b/ash/display/output_configurator_animation.cc
@@ -18,7 +18,6 @@
 #include "ui/compositor/scoped_layer_animation_settings.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kFadingAnimationDurationInMS = 200;
@@ -122,9 +121,9 @@ void OutputConfiguratorAnimation::StartFadeOutAnimation(
     ui::Layer* hiding_layer = new ui::Layer(ui::LAYER_SOLID_COLOR);
     hiding_layer->SetColor(SK_ColorBLACK);
     hiding_layer->SetBounds(root_window->bounds());
-    ui::Layer* parent = ash::Shell::GetContainer(
-        root_window,
-        ash::internal::kShellWindowId_OverlayContainer)->layer();
+    ui::Layer* parent =
+        ash::Shell::GetContainer(root_window,
+                                 ash::kShellWindowId_OverlayContainer)->layer();
     parent->Add(hiding_layer);
 
     hiding_layer->SetOpacity(0.0);
@@ -181,9 +180,9 @@ void OutputConfiguratorAnimation::StartFadeInAnimation() {
       hiding_layer = new ui::Layer(ui::LAYER_SOLID_COLOR);
       hiding_layer->SetColor(SK_ColorBLACK);
       hiding_layer->SetBounds(root_window->bounds());
-      ui::Layer* parent = ash::Shell::GetContainer(
-          root_window,
-          ash::internal::kShellWindowId_OverlayContainer)->layer();
+      ui::Layer* parent =
+          ash::Shell::GetContainer(
+              root_window, ash::kShellWindowId_OverlayContainer)->layer();
       parent->Add(hiding_layer);
       hiding_layer->SetOpacity(1.0f);
       hiding_layer->SetVisible(true);
@@ -225,5 +224,4 @@ void OutputConfiguratorAnimation::ClearHidingLayers() {
   hiding_layers_.clear();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/output_configurator_animation.h b/ash/display/output_configurator_animation.h
index 2d00074..71a2127 100644
--- a/ash/display/output_configurator_animation.h
+++ b/ash/display/output_configurator_animation.h
@@ -22,7 +22,6 @@ class Layer;
 }  // namespace ui
 
 namespace ash {
-namespace internal {
 
 // OutputConfiguratorAnimation provides the visual effects for
 // ui::OutputConfigurator, such like fade-out/in during changing
@@ -60,7 +59,6 @@ class ASH_EXPORT OutputConfiguratorAnimation
   DISALLOW_COPY_AND_ASSIGN(OutputConfiguratorAnimation);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_OUTPUT_CONFIGURATION_CONTROLLER_H_
diff --git a/ash/display/projecting_observer_chromeos.cc b/ash/display/projecting_observer_chromeos.cc
index 8183d0a..81dc3ea 100644
--- a/ash/display/projecting_observer_chromeos.cc
+++ b/ash/display/projecting_observer_chromeos.cc
@@ -10,8 +10,6 @@
 
 namespace ash {
 
-namespace internal {
-
 ProjectingObserver::ProjectingObserver()
     : has_internal_output_(false),
       output_count_(0),
@@ -57,6 +55,4 @@ void ProjectingObserver::SetIsProjecting() {
       projecting);
 }
 
-}  // namespace internal
-
 }  // namespace ash
diff --git a/ash/display/projecting_observer_chromeos.h b/ash/display/projecting_observer_chromeos.h
index 3320ae8..d038b6d 100644
--- a/ash/display/projecting_observer_chromeos.h
+++ b/ash/display/projecting_observer_chromeos.h
@@ -10,8 +10,6 @@
 
 namespace ash {
 
-namespace internal {
-
 class ASH_EXPORT ProjectingObserver : public ui::OutputConfigurator::Observer {
  public:
   ProjectingObserver();
@@ -41,8 +39,6 @@ class ASH_EXPORT ProjectingObserver : public ui::OutputConfigurator::Observer {
   DISALLOW_COPY_AND_ASSIGN(ProjectingObserver);
 };
 
-}  // namespace internal
-
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_
diff --git a/ash/display/projecting_observer_chromeos_unittest.cc b/ash/display/projecting_observer_chromeos_unittest.cc
index 16d9694..a6c1d205 100644
--- a/ash/display/projecting_observer_chromeos_unittest.cc
+++ b/ash/display/projecting_observer_chromeos_unittest.cc
@@ -11,9 +11,6 @@
 #include "ui/display/chromeos/test/test_display_snapshot.h"
 
 namespace ash {
-
-namespace internal {
-
 namespace {
 
 ui::TestDisplaySnapshot* CreateInternalSnapshot() {
@@ -192,6 +189,4 @@ TEST_F(ProjectingObserverTest,
   EXPECT_FALSE(fake_power_client_->is_projecting());
 }
 
-}  // namespace internal
-
 }  // namespace ash
diff --git a/ash/display/resolution_notification_controller.cc b/ash/display/resolution_notification_controller.cc
index a44e2da..2c45402 100644
--- a/ash/display/resolution_notification_controller.cc
+++ b/ash/display/resolution_notification_controller.cc
@@ -23,7 +23,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 bool g_use_timer = true;
@@ -320,5 +319,4 @@ void ResolutionNotificationController::SuppressTimerForTest() {
   g_use_timer = false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/resolution_notification_controller.h b/ash/display/resolution_notification_controller.h
index bacc9c8..23a582d 100644
--- a/ash/display/resolution_notification_controller.h
+++ b/ash/display/resolution_notification_controller.h
@@ -23,7 +23,7 @@ class Widget;
 }  // namespace views
 
 namespace ash {
-namespace internal {
+
 // A class which manages the notification of display resolution change and
 // also manages the timeout in case the new resolution is unusable.
 class ASH_EXPORT ResolutionNotificationController
@@ -93,7 +93,6 @@ class ASH_EXPORT ResolutionNotificationController
   DISALLOW_COPY_AND_ASSIGN(ResolutionNotificationController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_RESOLUTION_NOTIFICATION_CONTROLLER_H_
diff --git a/ash/display/resolution_notification_controller_unittest.cc b/ash/display/resolution_notification_controller_unittest.cc
index e3b2740..4d1eedf 100644
--- a/ash/display/resolution_notification_controller_unittest.cc
+++ b/ash/display/resolution_notification_controller_unittest.cc
@@ -18,8 +18,6 @@
 #include "ui/message_center/notification_list.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 base::string16 ExpectedNotificationMessage(int64 display_id,
@@ -159,7 +157,7 @@ TEST_F(ResolutionNotificationControllerTest, Basic) {
 
   UpdateDisplay("300x300#300x300%57|200x200%58,250x250#250x250%59|200x200%60");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   ASSERT_EQ(0, accept_count());
   EXPECT_FALSE(IsNotificationVisible());
@@ -192,7 +190,7 @@ TEST_F(ResolutionNotificationControllerTest, ClickMeansAccept) {
 
   UpdateDisplay("300x300#300x300%57|200x200%58,250x250#250x250%59|200x200%60");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   ASSERT_EQ(0, accept_count());
   EXPECT_FALSE(IsNotificationVisible());
@@ -221,7 +219,7 @@ TEST_F(ResolutionNotificationControllerTest, AcceptButton) {
   if (!SupportsMultipleDisplays())
     return;
 
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
 
   UpdateDisplay("300x300#300x300%59|200x200%60");
@@ -262,7 +260,7 @@ TEST_F(ResolutionNotificationControllerTest, Close) {
 
   UpdateDisplay("100x100,150x150#150x150%59|200x200%60");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   ASSERT_EQ(0, accept_count());
   EXPECT_FALSE(IsNotificationVisible());
@@ -301,7 +299,7 @@ TEST_F(ResolutionNotificationControllerTest, Timeout) {
   }
   EXPECT_FALSE(IsNotificationVisible());
   EXPECT_EQ(0, accept_count());
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   DisplayMode mode;
   EXPECT_TRUE(
@@ -317,7 +315,7 @@ TEST_F(ResolutionNotificationControllerTest, DisplayDisconnected) {
   UpdateDisplay("300x300#300x300%56|200x200%57,"
                 "200x200#250x250%58|200x200%59|100x100%60");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   SetDisplayResolutionAndNotify(
       ScreenUtil::GetSecondaryDisplay(), gfx::Size(100, 100));
@@ -342,7 +340,7 @@ TEST_F(ResolutionNotificationControllerTest, MultipleResolutionChange) {
   UpdateDisplay("300x300#300x300%56|200x200%57,"
                 "250x250#250x250%58|200x200%59");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
 
   SetDisplayResolutionAndNotify(
@@ -381,7 +379,7 @@ TEST_F(ResolutionNotificationControllerTest, Fallback) {
   UpdateDisplay("300x300#300x300%56|200x200%57,"
                 "250x250#250x250%58|220x220%59|200x200%60");
   int64 id2 = ash::ScreenUtil::GetSecondaryDisplay().id();
-  ash::internal::DisplayManager* display_manager =
+  ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
   ASSERT_EQ(0, accept_count());
   EXPECT_FALSE(IsNotificationVisible());
@@ -412,5 +410,4 @@ TEST_F(ResolutionNotificationControllerTest, Fallback) {
   EXPECT_EQ(58.0f, mode.refresh_rate);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/root_window_transformers.cc b/ash/display/root_window_transformers.cc
index 8774852..a632eb3 100644
--- a/ash/display/root_window_transformers.cc
+++ b/ash/display/root_window_transformers.cc
@@ -26,7 +26,6 @@
 DECLARE_WINDOW_PROPERTY_TYPE(gfx::Display::Rotation);
 
 namespace ash {
-namespace internal {
 namespace {
 
 #if defined(OS_WIN)
@@ -281,5 +280,4 @@ aura::RootWindowTransformer* CreateRootWindowTransformerForMirroredDisplay(
                                          mirror_display_info);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/root_window_transformers.h b/ash/display/root_window_transformers.h
index e1d4053..a6f2b5c 100644
--- a/ash/display/root_window_transformers.h
+++ b/ash/display/root_window_transformers.h
@@ -18,7 +18,6 @@ class Transform;
 }
 
 namespace ash {
-namespace internal {
 class DisplayInfo;
 
 ASH_EXPORT aura::RootWindowTransformer* CreateRootWindowTransformerForDisplay(
@@ -34,7 +33,6 @@ CreateRootWindowTransformerForMirroredDisplay(
     const DisplayInfo& source_display_info,
     const DisplayInfo& mirror_display_info);
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_ROOT_WINDOW_TRANSFORMERS_H_
diff --git a/ash/display/root_window_transformers_unittest.cc b/ash/display/root_window_transformers_unittest.cc
index 954deb8..b41b75f 100644
--- a/ash/display/root_window_transformers_unittest.cc
+++ b/ash/display/root_window_transformers_unittest.cc
@@ -27,8 +27,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const char kDesktopBackgroundView[] = "DesktopBackgroundView";
@@ -410,5 +408,4 @@ TEST_F(RootWindowTransformersTest, LetterBoxPillarBox) {
   EXPECT_EQ("125,0,125,0", transformer->GetHostInsets().ToString());
 }
 
-}  // namespace test
 }  // namespace ash
diff --git a/ash/display/screen_ash.cc b/ash/display/screen_ash.cc
index 02cf9c0..d32deb8 100644
--- a/ash/display/screen_ash.cc
+++ b/ash/display/screen_ash.cc
@@ -23,7 +23,7 @@ namespace ash {
 
 namespace {
 
-internal::DisplayManager* GetDisplayManager() {
+DisplayManager* GetDisplayManager() {
   return Shell::GetInstance()->display_manager();
 }
 
@@ -136,7 +136,7 @@ gfx::Display ScreenAsh::FindDisplayContainingPoint(const gfx::Point& point) {
 
 // static
 gfx::Rect ScreenAsh::GetMaximizedWindowBoundsInParent(aura::Window* window) {
-  if (internal::GetRootWindowController(window->GetRootWindow())->shelf())
+  if (GetRootWindowController(window->GetRootWindow())->shelf())
     return GetDisplayWorkAreaBoundsInParent(window);
   else
     return GetDisplayBoundsInParent(window);
@@ -176,7 +176,7 @@ gfx::Rect ScreenAsh::ConvertRectFromScreen(aura::Window* window,
 
 // static
 const gfx::Display& ScreenAsh::GetSecondaryDisplay() {
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   CHECK_EQ(2U, display_manager->GetNumDisplays());
   return display_manager->GetDisplayAt(0).id() ==
       Shell::GetScreen()->GetPrimaryDisplay().id() ?
@@ -232,15 +232,14 @@ gfx::Display ScreenAsh::GetDisplayNearestWindow(gfx::NativeView window) const {
   const aura::Window* root_window = window->GetRootWindow();
   if (!root_window)
     return GetPrimaryDisplay();
-  const internal::RootWindowSettings* rws =
-      internal::GetRootWindowSettings(root_window);
+  const RootWindowSettings* rws = GetRootWindowSettings(root_window);
   if (rws->shutdown)
     return gfx::Display(1);
   int64 id = rws->display_id;
   // if id is |kInvaildDisplayID|, it's being deleted.
   DCHECK(id != gfx::Display::kInvalidDisplayID);
 
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   // RootWindow needs Display to determine its device scale factor
   // for non desktop display.
   if (display_manager->non_desktop_display().id() == id)
diff --git a/ash/display/screen_ash.h b/ash/display/screen_ash.h
index eb8cf75a..08011b2 100644
--- a/ash/display/screen_ash.h
+++ b/ash/display/screen_ash.h
@@ -78,7 +78,7 @@ class ASH_EXPORT ScreenAsh : public gfx::Screen {
   virtual void RemoveObserver(gfx::DisplayObserver* observer) OVERRIDE;
 
  private:
-  friend class internal::DisplayManager;
+  friend class DisplayManager;
 
   // Notifies observers of display configuration changes.
   void NotifyBoundsChanged(const gfx::Display& display);
diff --git a/ash/display/screen_position_controller.cc b/ash/display/screen_position_controller.cc
index 6572ac1..6ab4b54 100644
--- a/ash/display/screen_position_controller.cc
+++ b/ash/display/screen_position_controller.cc
@@ -28,9 +28,8 @@ namespace {
 // Return true if the window or its ancestor has |kStayInSameRootWindowkey|
 // property.
 bool ShouldStayInSameRootWindow(const aura::Window* window) {
-  return window &&
-      (window->GetProperty(internal::kStayInSameRootWindowKey) ||
-       ShouldStayInSameRootWindow(window->parent()));
+  return window && (window->GetProperty(kStayInSameRootWindowKey) ||
+                    ShouldStayInSameRootWindow(window->parent()));
 }
 
 // Move all transient children to |dst_root|, including the ones in
@@ -115,8 +114,6 @@ std::pair<aura::Window*, gfx::Point> GetRootWindowRelativeToWindow(
 
 }  // namespace
 
-namespace internal {
-
 void ScreenPositionController::ConvertPointToScreen(
     const aura::Window* window,
     gfx::Point* point) {
@@ -152,7 +149,7 @@ void ScreenPositionController::SetBounds(aura::Window* window,
                                          const gfx::Rect& bounds,
                                          const gfx::Display& display) {
   DCHECK_NE(-1, display.id());
-  if (!window->parent()->GetProperty(internal::kUsesScreenCoordinatesKey)) {
+  if (!window->parent()->GetProperty(kUsesScreenCoordinatesKey)) {
     window->SetBounds(bounds);
     return;
   }
@@ -228,5 +225,4 @@ void ScreenPositionController::SetBounds(aura::Window* window,
   window->SetBounds(gfx::Rect(origin, bounds.size()));
 }
 
-}  // internal
-}  // ash
+}  // namespace ash
diff --git a/ash/display/screen_position_controller.h b/ash/display/screen_position_controller.h
index ad692f9..95271c1 100644
--- a/ash/display/screen_position_controller.h
+++ b/ash/display/screen_position_controller.h
@@ -9,7 +9,6 @@
 #include "ui/aura/client/screen_position_client.h"
 
 namespace ash {
-namespace internal {
 
 class ScreenPositionController : public aura::client::ScreenPositionClient {
  public:
@@ -31,7 +30,6 @@ class ScreenPositionController : public aura::client::ScreenPositionClient {
   DISALLOW_COPY_AND_ASSIGN(ScreenPositionController);
 };
 
-}  // internal
-}  // ash
+}  // namespace ash
 
 #endif  // ASH_DISPLAY_SCREEN_POSITION_CONTROLLER_H_
diff --git a/ash/display/screen_position_controller_unittest.cc b/ash/display/screen_position_controller_unittest.cc
index 94fe715..42150bc 100644
--- a/ash/display/screen_position_controller_unittest.cc
+++ b/ash/display/screen_position_controller_unittest.cc
@@ -41,7 +41,7 @@ void SetSecondaryDisplayLayout(DisplayLayout::Position position) {
       SetLayoutForCurrentDisplays(layout);
 }
 
-internal::ScreenPositionController* GetScreenPositionController() {
+ScreenPositionController* GetScreenPositionController() {
   ShellTestApi test_api(Shell::GetInstance());
   return test_api.screen_position_controller();
 }
diff --git a/ash/display/shared_display_edge_indicator.cc b/ash/display/shared_display_edge_indicator.cc
index 02af831..bf2c047 100644
--- a/ash/display/shared_display_edge_indicator.cc
+++ b/ash/display/shared_display_edge_indicator.cc
@@ -18,7 +18,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kIndicatorAnimationDurationMs = 1000;
@@ -113,5 +112,4 @@ void SharedDisplayEdgeIndicator::AnimationProgressed(
 
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/shared_display_edge_indicator.h b/ash/display/shared_display_edge_indicator.h
index d0d242d..d1900bc 100644
--- a/ash/display/shared_display_edge_indicator.h
+++ b/ash/display/shared_display_edge_indicator.h
@@ -22,7 +22,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // SharedDisplayEdgeIndicator is responsible for showing a window that indicates
 // the edge that a window can be dragged into another display.
@@ -53,7 +52,6 @@ class ASH_EXPORT SharedDisplayEdgeIndicator : public gfx::AnimationDelegate {
   DISALLOW_COPY_AND_ASSIGN(SharedDisplayEdgeIndicator);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_
diff --git a/ash/display/virtual_keyboard_window_controller.cc b/ash/display/virtual_keyboard_window_controller.cc
index 531aa9b..b7cb262 100644
--- a/ash/display/virtual_keyboard_window_controller.cc
+++ b/ash/display/virtual_keyboard_window_controller.cc
@@ -22,7 +22,6 @@
 #include "ui/keyboard/keyboard_util.h"
 
 namespace ash {
-namespace internal {
 
 VirtualKeyboardWindowController::VirtualKeyboardWindowController() {
   Shell::GetInstance()->AddShellObserver(this);
@@ -90,8 +89,8 @@ void VirtualKeyboardWindowController::FlipDisplay() {
 
   aura::WindowTreeHost* host = root_window_controller_->host();
   scoped_ptr<aura::RootWindowTransformer> transformer(
-      internal::CreateRootWindowTransformerForDisplay(host->window(),
-          display_manager->non_desktop_display()));
+      CreateRootWindowTransformerForDisplay(
+          host->window(), display_manager->non_desktop_display()));
   host->SetRootWindowTransformer(transformer.Pass());
 }
 
@@ -106,5 +105,4 @@ void VirtualKeyboardWindowController::OnMaximizeModeEnded() {
     Shell::GetInstance()->DeactivateKeyboard();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/display/virtual_keyboard_window_controller.h b/ash/display/virtual_keyboard_window_controller.h
index 1686539..23dd406 100644
--- a/ash/display/virtual_keyboard_window_controller.h
+++ b/ash/display/virtual_keyboard_window_controller.h
@@ -16,15 +16,13 @@ class KeyboardController;
 }
 
 namespace ash {
+class DisplayInfo;
+class RootWindowController;
 
 namespace test {
 class VirtualKeyboardWindowControllerTest;
 }  // namespace test
 
-namespace internal {
-class DisplayInfo;
-class RootWindowController;
-
 // This class maintains the RootWindowController dedicated for
 // virtual keyboard.
 class ASH_EXPORT VirtualKeyboardWindowController : public ShellObserver {
@@ -60,7 +58,6 @@ class ASH_EXPORT VirtualKeyboardWindowController : public ShellObserver {
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardWindowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_VIRTUAL_KEYBOARD_WINDOW_CONTROLLER_H_
diff --git a/ash/display/virtual_keyboard_window_controller_unittest.cc b/ash/display/virtual_keyboard_window_controller_unittest.cc
index 915be43..4e1bdd5 100644
--- a/ash/display/virtual_keyboard_window_controller_unittest.cc
+++ b/ash/display/virtual_keyboard_window_controller_unittest.cc
@@ -24,18 +24,17 @@ class VirtualKeyboardWindowControllerTest : public AshTestBase {
   virtual ~VirtualKeyboardWindowControllerTest() {}
 
   void set_virtual_keyboard_window_controller(
-      internal::VirtualKeyboardWindowController* controller) {
+      VirtualKeyboardWindowController* controller) {
     virtual_keyboard_window_controller_ = controller;
   }
 
-  internal::RootWindowController* root_window_controller() {
+  RootWindowController* root_window_controller() {
     return virtual_keyboard_window_controller_->
         root_window_controller_for_test();
   }
 
  private:
-  internal::VirtualKeyboardWindowController*
-      virtual_keyboard_window_controller_;
+  VirtualKeyboardWindowController* virtual_keyboard_window_controller_;
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardWindowControllerTest);
 };
 
@@ -70,7 +69,7 @@ TEST_F(VirtualKeyboardUsabilityExperimentTest, VirtualKeyboardWindowTest) {
   EXPECT_TRUE(root_window_controller());
   // Keyboard container is added to virtual keyboard window.
   EXPECT_TRUE(root_window_controller()->GetContainer(
-      internal::kShellWindowId_VirtualKeyboardContainer));
+      kShellWindowId_VirtualKeyboardContainer));
 }
 
 // Tests that the onscreen keyboard becomes enabled when maximize mode is
diff --git a/ash/drag_drop/drag_drop_controller.cc b/ash/drag_drop/drag_drop_controller.cc
index cc8d96b..4a2603f 100644
--- a/ash/drag_drop/drag_drop_controller.cc
+++ b/ash/drag_drop/drag_drop_controller.cc
@@ -31,9 +31,8 @@
 #include "ui/wm/public/drag_drop_delegate.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
+
 // The duration of the drag cancel animation in millisecond.
 const int kCancelAnimationDuration = 250;
 const int kTouchCancelAnimationDuration = 20;
@@ -560,5 +559,4 @@ void DragDropController::Cleanup() {
   drag_drop_tracker_.Pass();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/drag_drop/drag_drop_controller.h b/ash/drag_drop/drag_drop_controller.h
index 5d05ec9..7f20401 100644
--- a/ash/drag_drop/drag_drop_controller.h
+++ b/ash/drag_drop/drag_drop_controller.h
@@ -21,17 +21,14 @@ class LinearAnimation;
 }
 
 namespace ash {
+class DragDropTracker;
+class DragDropTrackerDelegate;
+class DragImageView;
 
 namespace test {
 class DragDropControllerTest;
 }
 
-namespace internal {
-
-class DragDropTracker;
-class DragDropTrackerDelegate;
-class DragImageView;
-
 class ASH_EXPORT DragDropController
     : public aura::client::DragDropClient,
       public ui::EventHandler,
@@ -122,7 +119,7 @@ class ASH_EXPORT DragDropController
   // Closure for quitting nested message loop.
   base::Closure quit_closure_;
 
-  scoped_ptr<ash::internal::DragDropTracker> drag_drop_tracker_;
+  scoped_ptr<ash::DragDropTracker> drag_drop_tracker_;
   scoped_ptr<DragDropTrackerDelegate> drag_drop_window_delegate_;
 
   ui::DragDropTypes::DragEventSource current_drag_event_source_;
@@ -136,7 +133,6 @@ class ASH_EXPORT DragDropController
   DISALLOW_COPY_AND_ASSIGN(DragDropController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DRAG_DROP_DRAG_DROP_CONTROLLER_H_
diff --git a/ash/drag_drop/drag_drop_controller_unittest.cc b/ash/drag_drop/drag_drop_controller_unittest.cc
index 4051cc6..9ef0b9b 100644
--- a/ash/drag_drop/drag_drop_controller_unittest.cc
+++ b/ash/drag_drop/drag_drop_controller_unittest.cc
@@ -148,11 +148,9 @@ class CompletableLinearAnimation : public gfx::LinearAnimation {
   int duration_;
 };
 
-class TestDragDropController : public internal::DragDropController {
+class TestDragDropController : public DragDropController {
  public:
-  TestDragDropController() : internal::DragDropController() {
-    Reset();
-  }
+  TestDragDropController() : DragDropController() { Reset(); }
 
   void Reset() {
     drag_start_received_ = false;
@@ -333,7 +331,7 @@ class DragDropControllerTest : public AshTestBase {
         NULL;
   }
 
-  internal::DragDropTracker* drag_drop_tracker() {
+  DragDropTracker* drag_drop_tracker() {
     return drag_drop_controller_->drag_drop_tracker_.get();
   }
 
diff --git a/ash/drag_drop/drag_drop_interactive_uitest.cc b/ash/drag_drop/drag_drop_interactive_uitest.cc
index f9b3cee..ef32801 100644
--- a/ash/drag_drop/drag_drop_interactive_uitest.cc
+++ b/ash/drag_drop/drag_drop_interactive_uitest.cc
@@ -20,7 +20,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 class DraggableView : public views::View {
@@ -184,5 +183,4 @@ TEST_F(DragDropTest, MAYBE_DragDropAcrossMultiDisplay) {
   target->Close();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/drag_drop/drag_drop_tracker.cc b/ash/drag_drop/drag_drop_tracker.cc
index 55cb7b9..193dc62 100644
--- a/ash/drag_drop/drag_drop_tracker.cc
+++ b/ash/drag_drop/drag_drop_tracker.cc
@@ -15,8 +15,6 @@
 #include "ui/wm/public/activation_delegate.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // An activation delegate which disables activating the drag and drop window.
@@ -101,5 +99,4 @@ ui::LocatedEvent* DragDropTracker::ConvertEvent(
                                 changed_button_flags());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/drag_drop/drag_drop_tracker.h b/ash/drag_drop/drag_drop_tracker.h
index b4dcf6e..670422b 100644
--- a/ash/drag_drop/drag_drop_tracker.h
+++ b/ash/drag_drop/drag_drop_tracker.h
@@ -16,7 +16,6 @@ class WindowDelegate;
 }
 
 namespace ash {
-namespace internal {
 
 // Provides functions for handling drag events inside and outside the root
 // window where drag is started. This internally sets up a capture window for
@@ -53,7 +52,6 @@ class ASH_EXPORT DragDropTracker {
   DISALLOW_COPY_AND_ASSIGN(DragDropTracker);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DRAG_DROP_DRAG_DROP_TRACKER_H_
diff --git a/ash/drag_drop/drag_drop_tracker_unittest.cc b/ash/drag_drop/drag_drop_tracker_unittest.cc
index dbac80e..6b470e8 100644
--- a/ash/drag_drop/drag_drop_tracker_unittest.cc
+++ b/ash/drag_drop/drag_drop_tracker_unittest.cc
@@ -31,9 +31,8 @@ class DragDropTrackerTest : public test::AshTestBase {
   }
 
   static aura::Window* GetTarget(const gfx::Point& location) {
-    scoped_ptr<internal::DragDropTracker> tracker(
-        new internal::DragDropTracker(Shell::GetPrimaryRootWindow(),
-                                      NULL));
+    scoped_ptr<DragDropTracker> tracker(
+        new DragDropTracker(Shell::GetPrimaryRootWindow(), NULL));
     ui::MouseEvent e(ui::ET_MOUSE_DRAGGED,
                      location,
                      location,
@@ -45,9 +44,8 @@ class DragDropTrackerTest : public test::AshTestBase {
 
   static ui::LocatedEvent* ConvertEvent(aura::Window* target,
                                            const ui::MouseEvent& event) {
-    scoped_ptr<internal::DragDropTracker> tracker(
-        new internal::DragDropTracker(Shell::GetPrimaryRootWindow(),
-                                      NULL));
+    scoped_ptr<DragDropTracker> tracker(
+        new DragDropTracker(Shell::GetPrimaryRootWindow(), NULL));
     ui::LocatedEvent* converted = tracker->ConvertEvent(target, event);
     return converted;
   }
diff --git a/ash/drag_drop/drag_image_view.cc b/ash/drag_drop/drag_image_view.cc
index 5beb81f..746d619 100644
--- a/ash/drag_drop/drag_image_view.cc
+++ b/ash/drag_drop/drag_image_view.cc
@@ -15,8 +15,6 @@
 #include "ui/wm/core/shadow_types.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 using views::Widget;
 
@@ -171,5 +169,4 @@ void DragImageView::OnPaint(gfx::Canvas* canvas) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/drag_drop/drag_image_view.h b/ash/drag_drop/drag_image_view.h
index 0457847..fd5382e 100644
--- a/ash/drag_drop/drag_image_view.h
+++ b/ash/drag_drop/drag_image_view.h
@@ -13,7 +13,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // This class allows to show a (native) view always on top of everything. It
 // does this by creating a widget and setting the content as the given view. The
@@ -72,7 +71,6 @@ class DragImageView : public views::ImageView {
   DISALLOW_COPY_AND_ASSIGN(DragImageView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DRAG_DROP_DRAG_IMAGE_VIEW_H_
diff --git a/ash/extended_desktop_unittest.cc b/ash/extended_desktop_unittest.cc
index 0bc1ed4..4ad8301 100644
--- a/ash/extended_desktop_unittest.cc
+++ b/ash/extended_desktop_unittest.cc
@@ -163,7 +163,7 @@ TEST_F(ExtendedDesktopTest, Basic) {
   ASSERT_EQ(2U, root_windows.size());
   for (aura::Window::Windows::const_iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
-    EXPECT_TRUE(internal::GetRootWindowController(*iter) != NULL);
+    EXPECT_TRUE(GetRootWindowController(*iter) != NULL);
   }
   // Make sure root windows share the same controllers.
   EXPECT_EQ(aura::client::GetFocusClient(root_windows[0]),
@@ -671,12 +671,12 @@ TEST_F(ExtendedDesktopTest, StayInSameRootWindow) {
 
   // The widget stays in the same root if kStayInSameRootWindowKey is set to
   // true.
-  w1->GetNativeView()->SetProperty(internal::kStayInSameRootWindowKey, true);
+  w1->GetNativeView()->SetProperty(kStayInSameRootWindowKey, true);
   w1->SetBounds(gfx::Rect(10, 10, 50, 50));
   EXPECT_EQ(root_windows[1], w1->GetNativeView()->GetRootWindow());
 
   // The widget should now move to the 1st root window without the property.
-  w1->GetNativeView()->ClearProperty(internal::kStayInSameRootWindowKey);
+  w1->GetNativeView()->ClearProperty(kStayInSameRootWindowKey);
   w1->SetBounds(gfx::Rect(10, 10, 50, 50));
   EXPECT_EQ(root_windows[0], w1->GetNativeView()->GetRootWindow());
 
@@ -684,7 +684,7 @@ TEST_F(ExtendedDesktopTest, StayInSameRootWindow) {
   // not move to another root window regardles of the bounds specified.
   aura::Window* settings_bubble_container =
       Shell::GetPrimaryRootWindowController()->GetContainer(
-          internal::kShellWindowId_SettingBubbleContainer);
+          kShellWindowId_SettingBubbleContainer);
   aura::Window* window = aura::test::CreateTestWindowWithId(
       100, settings_bubble_container);
   window->SetBoundsInScreen(gfx::Rect(150, 10, 50, 50),
@@ -693,7 +693,7 @@ TEST_F(ExtendedDesktopTest, StayInSameRootWindow) {
 
   aura::Window* status_container =
       Shell::GetPrimaryRootWindowController()->GetContainer(
-          internal::kShellWindowId_StatusContainer);
+          kShellWindowId_StatusContainer);
   window = aura::test::CreateTestWindowWithId(100, status_container);
   window->SetBoundsInScreen(gfx::Rect(150, 10, 50, 50),
                             ScreenUtil::GetSecondaryDisplay());
@@ -723,10 +723,9 @@ TEST_F(ExtendedDesktopTest, KeyEventsOnLockScreen) {
   views::Textfield* textfield = new views::Textfield;
   lock_widget->client_view()->AddChildView(textfield);
 
-  ash::Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      ash::internal::kShellWindowId_LockScreenContainer)->
-      AddChild(lock_widget->GetNativeView());
+  ash::Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                           ash::kShellWindowId_LockScreenContainer)
+      ->AddChild(lock_widget->GetNativeView());
   lock_widget->Show();
   textfield->RequestFocus();
 
diff --git a/ash/first_run/desktop_cleaner.cc b/ash/first_run/desktop_cleaner.cc
index 8008cda..d388e18 100644
--- a/ash/first_run/desktop_cleaner.cc
+++ b/ash/first_run/desktop_cleaner.cc
@@ -14,8 +14,6 @@
 #include "ui/message_center/notification_blocker.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kContainerIdsToHide[] = {
@@ -114,6 +112,5 @@ std::vector<int> DesktopCleaner::GetContainersToHideForTest() {
                           kContainerIdsToHide + arraysize(kContainerIdsToHide));
 }
 
-}  // namespace internal
 }  // namespace ash
 
diff --git a/ash/first_run/desktop_cleaner.h b/ash/first_run/desktop_cleaner.h
index c3077b4..061f112 100644
--- a/ash/first_run/desktop_cleaner.h
+++ b/ash/first_run/desktop_cleaner.h
@@ -13,16 +13,13 @@
 #include "base/memory/scoped_ptr.h"
 
 namespace ash {
+class ContainerHider;
+class NotificationBlocker;
 
 namespace test {
 class FirstRunHelperTest;
 }
 
-namespace internal {
-
-class ContainerHider;
-class NotificationBlocker;
-
 // Class used to "clean" ash desktop, i.e. hide all windows and notifications.
 class ASH_EXPORT DesktopCleaner {
  public:
@@ -40,7 +37,6 @@ class ASH_EXPORT DesktopCleaner {
   DISALLOW_COPY_AND_ASSIGN(DesktopCleaner);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_FIRST_RUN_DESKTOP_CLEANER_
diff --git a/ash/first_run/first_run_helper_impl.cc b/ash/first_run/first_run_helper_impl.cc
index f8a3ca6..919cca9 100644
--- a/ash/first_run/first_run_helper_impl.cc
+++ b/ash/first_run/first_run_helper_impl.cc
@@ -25,9 +25,8 @@ views::Widget* CreateFirstRunWindow() {
   params.bounds = Shell::GetScreen()->GetPrimaryDisplay().bounds();
   params.show_state = ui::SHOW_STATE_FULLSCREEN;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params.parent =
-      Shell::GetContainer(Shell::GetPrimaryRootWindow(),
-                          ash::internal::kShellWindowId_OverlayContainer);
+  params.parent = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                                      ash::kShellWindowId_OverlayContainer);
   views::Widget* window = new views::Widget;
   window->Init(params);
   return window;
diff --git a/ash/first_run/first_run_helper_impl.h b/ash/first_run/first_run_helper_impl.h
index e788f6a..3993767 100644
--- a/ash/first_run/first_run_helper_impl.h
+++ b/ash/first_run/first_run_helper_impl.h
@@ -15,7 +15,7 @@ namespace ash {
 class Shell;
 
 class FirstRunHelperImpl : public FirstRunHelper,
-                           public internal::OverlayEventFilter::Delegate {
+                           public OverlayEventFilter::Delegate {
  public:
   FirstRunHelperImpl();
   virtual ~FirstRunHelperImpl();
@@ -33,14 +33,14 @@ class FirstRunHelperImpl : public FirstRunHelper,
   virtual gfx::Rect GetTrayBubbleBounds() OVERRIDE;
   virtual gfx::Rect GetHelpButtonBounds() OVERRIDE;
 
-  // Overriden from internal::OverlayEventFilter::Delegate.
+  // Overriden from OverlayEventFilter::Delegate.
   virtual void Cancel() OVERRIDE;
   virtual bool IsCancelingKeyEvent(ui::KeyEvent* event) OVERRIDE;
   virtual aura::Window* GetWindow() OVERRIDE;
 
  private:
   views::Widget* widget_;
-  internal::DesktopCleaner cleaner_;
+  DesktopCleaner cleaner_;
 
   DISALLOW_COPY_AND_ASSIGN(FirstRunHelperImpl);
 };
diff --git a/ash/first_run/first_run_helper_unittest.cc b/ash/first_run/first_run_helper_unittest.cc
index 4bac723..6952dd6 100644
--- a/ash/first_run/first_run_helper_unittest.cc
+++ b/ash/first_run/first_run_helper_unittest.cc
@@ -80,7 +80,7 @@ class FirstRunHelperTest : public AshTestBase,
   void CheckContainersAreVisible() const {
     aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
     std::vector<int> containers_to_check =
-        internal::DesktopCleaner::GetContainersToHideForTest();
+        DesktopCleaner::GetContainersToHideForTest();
     for (size_t i = 0; i < containers_to_check.size(); ++i) {
       aura::Window* container =
           Shell::GetContainer(root_window, containers_to_check[i]);
@@ -91,7 +91,7 @@ class FirstRunHelperTest : public AshTestBase,
   void CheckContainersAreHidden() const {
     aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
     std::vector<int> containers_to_check =
-        internal::DesktopCleaner::GetContainersToHideForTest();
+        DesktopCleaner::GetContainersToHideForTest();
     for (size_t i = 0; i < containers_to_check.size(); ++i) {
       aura::Window* container =
           Shell::GetContainer(root_window, containers_to_check[i]);
diff --git a/ash/focus_cycler.cc b/ash/focus_cycler.cc
index 0fa83aa..b0d6d4d 100644
--- a/ash/focus_cycler.cc
+++ b/ash/focus_cycler.cc
@@ -24,8 +24,6 @@ bool HasFocusableWindow() {
 
 }  // namespace
 
-namespace internal {
-
 FocusCycler::FocusCycler() : widget_activating_(NULL) {
 }
 
@@ -109,6 +107,4 @@ bool FocusCycler::FocusWidget(views::Widget* widget) {
   return widget->IsActive();
 }
 
-}  // namespace internal
-
 }  // namespace ash
diff --git a/ash/focus_cycler.h b/ash/focus_cycler.h
index d0071d1..769c2ea 100644
--- a/ash/focus_cycler.h
+++ b/ash/focus_cycler.h
@@ -17,8 +17,6 @@ class Widget;
 
 namespace ash {
 
-namespace internal {
-
 // This class handles moving focus between a set of widgets and the main browser
 // window.
 class ASH_EXPORT FocusCycler {
@@ -54,8 +52,6 @@ class ASH_EXPORT FocusCycler {
   DISALLOW_COPY_AND_ASSIGN(FocusCycler);
 };
 
-}  // namespace internal
-
 }  // namespace ash
 
 #endif  // FOCUS_CYCLER_H_
diff --git a/ash/focus_cycler_unittest.cc b/ash/focus_cycler_unittest.cc
index 5b25d96..33c89c2 100644
--- a/ash/focus_cycler_unittest.cc
+++ b/ash/focus_cycler_unittest.cc
@@ -27,14 +27,11 @@ namespace ash {
 namespace test {
 
 using aura::Window;
-using internal::FocusCycler;
 
 namespace {
 
-internal::StatusAreaWidgetDelegate* GetStatusAreaWidgetDelegate(
-    views::Widget* widget) {
-  return static_cast<internal::StatusAreaWidgetDelegate*>(
-      widget->GetContentsView());
+StatusAreaWidgetDelegate* GetStatusAreaWidgetDelegate(views::Widget* widget) {
+  return static_cast<StatusAreaWidgetDelegate*>(widget->GetContentsView());
 }
 
 class PanedWidgetDelegate : public views::WidgetDelegate {
@@ -96,10 +93,11 @@ class FocusCyclerTest : public AshTestBase {
   bool CreateTray() {
     if (tray_)
       return false;
-    aura::Window* parent = Shell::GetPrimaryRootWindowController()->
-        GetContainer(ash::internal::kShellWindowId_StatusContainer);
+    aura::Window* parent =
+        Shell::GetPrimaryRootWindowController()->GetContainer(
+            ash::kShellWindowId_StatusContainer);
 
-    internal::StatusAreaWidget* widget = new internal::StatusAreaWidget(parent);
+    StatusAreaWidget* widget = new StatusAreaWidget(parent);
     widget->CreateTrayViews();
     widget->Show();
     tray_.reset(widget->system_tray());
diff --git a/ash/frame/caption_buttons/alternate_frame_size_button.cc b/ash/frame/caption_buttons/alternate_frame_size_button.cc
index 930fa37..54799cb 100644
--- a/ash/frame/caption_buttons/alternate_frame_size_button.cc
+++ b/ash/frame/caption_buttons/alternate_frame_size_button.cc
@@ -223,8 +223,7 @@ void AlternateFrameSizeButton::UpdateSnapType(const ui::LocatedEvent& event) {
   if (snap_type_ == SNAP_LEFT || snap_type_ == SNAP_RIGHT) {
     aura::Window* window = frame_->GetNativeWindow();
     if (!phantom_window_controller_.get()) {
-      phantom_window_controller_.reset(
-          new internal::PhantomWindowController(window));
+      phantom_window_controller_.reset(new PhantomWindowController(window));
     }
     gfx::Rect phantom_bounds_in_parent = (snap_type_ == SNAP_LEFT) ?
         wm::GetDefaultLeftSnappedWindowBoundsInParent(window) :
diff --git a/ash/frame/caption_buttons/alternate_frame_size_button.h b/ash/frame/caption_buttons/alternate_frame_size_button.h
index 89c9549..e99d32f 100644
--- a/ash/frame/caption_buttons/alternate_frame_size_button.h
+++ b/ash/frame/caption_buttons/alternate_frame_size_button.h
@@ -17,10 +17,7 @@ class Widget;
 
 namespace ash {
 class AlternateFrameSizeButtonDelegate;
-
-namespace internal {
 class PhantomWindowController;
-}
 
 // The maximize/restore button when using the alternate button style.
 // When the mouse is pressed over the size button or the size button is touched:
@@ -111,7 +108,7 @@ class ASH_EXPORT AlternateFrameSizeButton : public FrameCaptionButton {
   // Displays a preview of how the window's bounds will change as a result of
   // snapping the window left or right. The preview is only visible if the snap
   // left or snap right button is pressed.
-  scoped_ptr<internal::PhantomWindowController> phantom_window_controller_;
+  scoped_ptr<PhantomWindowController> phantom_window_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(AlternateFrameSizeButton);
 };
diff --git a/ash/frame/caption_buttons/frame_maximize_button.cc b/ash/frame/caption_buttons/frame_maximize_button.cc
index 9341251..dc28c7a 100644
--- a/ash/frame/caption_buttons/frame_maximize_button.cc
+++ b/ash/frame/caption_buttons/frame_maximize_button.cc
@@ -414,7 +414,7 @@ void FrameMaximizeButton::UpdateSnap(const gfx::Point& location) {
 
   if (!phantom_window_) {
     phantom_window_.reset(
-        new internal::PhantomWindowController(frame_->GetNativeWindow()));
+        new PhantomWindowController(frame_->GetNativeWindow()));
   }
   if (maximizer_) {
     phantom_window_->set_phantom_below_window(maximizer_->GetBubbleWindow());
diff --git a/ash/frame/caption_buttons/frame_maximize_button.h b/ash/frame/caption_buttons/frame_maximize_button.h
index 0cfe224..29d89e8 100644
--- a/ash/frame/caption_buttons/frame_maximize_button.h
+++ b/ash/frame/caption_buttons/frame_maximize_button.h
@@ -21,12 +21,8 @@ class Widget;
 
 namespace ash {
 class FrameMaximizeButtonObserver;
-
-namespace internal {
-class PhantomWindowController;
-}
-
 class MaximizeBubbleController;
+class PhantomWindowController;
 
 // Button used for the maximize control on the frame. Handles snapping logic.
 class ASH_EXPORT FrameMaximizeButton : public FrameCaptionButton,
@@ -144,7 +140,7 @@ class ASH_EXPORT FrameMaximizeButton : public FrameCaptionButton,
   bool observing_frame_;
 
   // Renders the snap position.
-  scoped_ptr<internal::PhantomWindowController> phantom_window_;
+  scoped_ptr<PhantomWindowController> phantom_window_;
 
   // Is snapping enabled? Set on press so that in drag we know whether we
   // should show the snap locations.
diff --git a/ash/frame/caption_buttons/maximize_bubble_controller_bubble.cc b/ash/frame/caption_buttons/maximize_bubble_controller_bubble.cc
index 7205354..e8188cd 100644
--- a/ash/frame/caption_buttons/maximize_bubble_controller_bubble.cc
+++ b/ash/frame/caption_buttons/maximize_bubble_controller_bubble.cc
@@ -348,9 +348,8 @@ MaximizeBubbleControllerBubble::MaximizeBubbleControllerBubble(
 
   // The window needs to be owned by the root so that the phantom window does
   // not cover it upon animation.
-  aura::Window* parent = Shell::GetContainer(
-      Shell::GetTargetRootWindow(),
-      internal::kShellWindowId_ShelfContainer);
+  aura::Window* parent = Shell::GetContainer(Shell::GetTargetRootWindow(),
+                                             kShellWindowId_ShelfContainer);
   set_parent_window(parent);
 
   set_notify_enter_exit_on_child(true);
diff --git a/ash/keyboard_overlay/keyboard_overlay_view.h b/ash/keyboard_overlay/keyboard_overlay_view.h
index 0fc339a..2fb0a59 100644
--- a/ash/keyboard_overlay/keyboard_overlay_view.h
+++ b/ash/keyboard_overlay/keyboard_overlay_view.h
@@ -28,7 +28,7 @@ namespace ash {
 // A customized dialog view for the keyboard overlay.
 class ASH_WITH_CONTENT_EXPORT KeyboardOverlayView
     : public views::WebDialogView,
-      public ash::internal::OverlayEventFilter::Delegate {
+      public ash::OverlayEventFilter::Delegate {
  public:
   struct KeyEventData {
     ui::KeyboardCode key_code;
@@ -40,7 +40,7 @@ class ASH_WITH_CONTENT_EXPORT KeyboardOverlayView
                       WebContentsHandler* handler);
   virtual ~KeyboardOverlayView();
 
-  // Overridden from ash::internal::OverlayEventFilter::Delegate:
+  // Overridden from ash::OverlayEventFilter::Delegate:
   virtual void Cancel() OVERRIDE;
   virtual bool IsCancelingKeyEvent(ui::KeyEvent* event) OVERRIDE;
   virtual aura::Window* GetWindow() OVERRIDE;
diff --git a/ash/keyboard_uma_event_filter.cc b/ash/keyboard_uma_event_filter.cc
index 6b7ae6b..f3864bf 100644
--- a/ash/keyboard_uma_event_filter.cc
+++ b/ash/keyboard_uma_event_filter.cc
@@ -17,7 +17,6 @@ const int kKeystrokeThresholdInSeconds = 5;
 }
 
 namespace ash {
-namespace internal {
 
 KeyboardUMAEventFilter::KeyboardUMAEventFilter() {}
 
@@ -47,5 +46,4 @@ void KeyboardUMAEventFilter::OnKeyEvent(ui::KeyEvent* event) {
   last_keystroke_time_ = event->time_stamp();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/keyboard_uma_event_filter.h b/ash/keyboard_uma_event_filter.h
index b25f2f9..85ea4c6 100644
--- a/ash/keyboard_uma_event_filter.h
+++ b/ash/keyboard_uma_event_filter.h
@@ -10,7 +10,6 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
-namespace internal {
 
 // EventFilter for tracking keyboard-related metrics, which intercepts events
 // before they are processed by the usual path and logs metrics about the
@@ -30,7 +29,6 @@ class KeyboardUMAEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(KeyboardUMAEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_KEYBOARD_UMA_EVENT_FILTER_H_
diff --git a/ash/magnifier/magnification_controller.cc b/ash/magnifier/magnification_controller.cc
index dd3b0d8..8e13e6b 100644
--- a/ash/magnifier/magnification_controller.cc
+++ b/ash/magnifier/magnification_controller.cc
@@ -271,7 +271,7 @@ bool MagnificationControllerImpl::RedrawDIP(const gfx::PointF& position_in_dip,
   gfx::Display display =
       Shell::GetScreen()->GetDisplayNearestWindow(root_window_);
   scoped_ptr<aura::RootWindowTransformer> transformer(
-      internal::CreateRootWindowTransformerForDisplay(root_window_, display));
+      CreateRootWindowTransformerForDisplay(root_window_, display));
   root_window_->GetHost()->SetRootWindowTransformer(transformer.Pass());
 
   if (animate)
diff --git a/ash/magnifier/magnification_controller_unittest.cc b/ash/magnifier/magnification_controller_unittest.cc
index 5ad2d12..72edf41 100644
--- a/ash/magnifier/magnification_controller_unittest.cc
+++ b/ash/magnifier/magnification_controller_unittest.cc
@@ -16,7 +16,6 @@
 #include "ui/gfx/screen.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kRootHeight = 600;
@@ -439,5 +438,4 @@ TEST_F(MagnificationControllerTest, PanWindowToLeft) {
   EXPECT_EQ("100,300", GetHostMouseLocation());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/metrics/user_metrics_recorder.cc b/ash/metrics/user_metrics_recorder.cc
index ef0e980..a71271b 100644
--- a/ash/metrics/user_metrics_recorder.cc
+++ b/ash/metrics/user_metrics_recorder.cc
@@ -387,16 +387,16 @@ void UserMetricsRecorder::RecordUserMetricsAction(UserMetricsAction action) {
 }
 
 void UserMetricsRecorder::RecordPeriodicMetrics() {
-  internal::ShelfLayoutManager* manager =
-      internal::ShelfLayoutManager::ForShelf(Shell::GetPrimaryRootWindow());
+  ShelfLayoutManager* manager =
+      ShelfLayoutManager::ForShelf(Shell::GetPrimaryRootWindow());
   if (manager) {
     UMA_HISTOGRAM_ENUMERATION("Ash.ShelfAlignmentOverTime",
-        manager->SelectValueForShelfAlignment(
-            internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM,
-            internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT,
-            internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT,
-            -1),
-        internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT);
+                              manager->SelectValueForShelfAlignment(
+                                  SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM,
+                                  SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT,
+                                  SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT,
+                                  -1),
+                              SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT);
   }
 
   enum ActiveWindowStateType {
diff --git a/ash/root_window_controller.cc b/ash/root_window_controller.cc
index caa1228..0b4ab9b 100644
--- a/ash/root_window_controller.cc
+++ b/ash/root_window_controller.cc
@@ -95,7 +95,7 @@ aura::Window* CreateContainer(int window_id,
   container->SetName(name);
   container->Init(aura::WINDOW_LAYER_NOT_DRAWN);
   parent->AddChild(container);
-  if (window_id != internal::kShellWindowId_UnparentedControlContainer)
+  if (window_id != kShellWindowId_UnparentedControlContainer)
     container->Show();
   return container;
 }
@@ -123,7 +123,7 @@ void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
   bool has_restore_bounds = state->HasRestoreBounds();
 
   bool update_bounds = (state->IsNormalOrSnapped() || state->IsMinimized()) &&
-      new_parent->id() != internal::kShellWindowId_DockedContainer;
+                       new_parent->id() != kShellWindowId_DockedContainer;
   gfx::Rect local_bounds;
   if (update_bounds) {
     local_bounds = state->window()->bounds();
@@ -149,15 +149,14 @@ void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
 void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
   // Set of windows to move.
   const int kContainerIdsToMove[] = {
-    internal::kShellWindowId_DefaultContainer,
-    internal::kShellWindowId_DockedContainer,
-    internal::kShellWindowId_PanelContainer,
-    internal::kShellWindowId_AlwaysOnTopContainer,
-    internal::kShellWindowId_SystemModalContainer,
-    internal::kShellWindowId_LockSystemModalContainer,
-    internal::kShellWindowId_InputMethodContainer,
-    internal::kShellWindowId_UnparentedControlContainer,
-  };
+      kShellWindowId_DefaultContainer,
+      kShellWindowId_DockedContainer,
+      kShellWindowId_PanelContainer,
+      kShellWindowId_AlwaysOnTopContainer,
+      kShellWindowId_SystemModalContainer,
+      kShellWindowId_LockSystemModalContainer,
+      kShellWindowId_InputMethodContainer,
+      kShellWindowId_UnparentedControlContainer, };
   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
     int id = kContainerIdsToMove[i];
     aura::Window* src_container = Shell::GetContainer(src, id);
@@ -168,8 +167,7 @@ void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
       aura::Window::Windows::const_iterator iter =
           src_container->children().begin();
       while (iter != src_container->children().end() &&
-             internal::SystemModalContainerLayoutManager::IsModalBackground(
-                *iter)) {
+             SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
         ++iter;
       }
       // If the entire window list is modal background windows then stop.
@@ -183,13 +181,13 @@ void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
 // Mark the container window so that a widget added to this container will
 // use the virtual screeen coordinates instead of parent.
 void SetUsesScreenCoordinates(aura::Window* container) {
-  container->SetProperty(internal::kUsesScreenCoordinatesKey, true);
+  container->SetProperty(kUsesScreenCoordinatesKey, true);
 }
 
 // Mark the container window so that a widget added to this container will
 // say in the same root window regardless of the bounds specified.
 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
-  container->SetProperty(internal::kStayInSameRootWindowKey, true);
+  container->SetProperty(kStayInSameRootWindowKey, true);
 }
 
 void SetUsesEasyResizeTargeter(aura::Window* container) {
@@ -260,8 +258,6 @@ class EmptyWindowDelegate : public aura::WindowDelegate {
 
 }  // namespace
 
-namespace internal {
-
 void RootWindowController::CreateForPrimaryDisplay(aura::WindowTreeHost* host) {
   RootWindowController* controller = new RootWindowController(host);
   controller->Init(RootWindowController::PRIMARY,
@@ -294,7 +290,7 @@ RootWindowController* RootWindowController::ForWindow(
 
 // static
 RootWindowController* RootWindowController::ForTargetRootWindow() {
-  return internal::GetRootWindowController(Shell::GetTargetRootWindow());
+  return GetRootWindowController(Shell::GetTargetRootWindow());
 }
 
 // static
@@ -350,9 +346,9 @@ void RootWindowController::Shutdown() {
   workspace_controller_.reset();
   // Forget with the display ID so that display lookup
   // ends up with invalid display.
-  internal::GetRootWindowSettings(root_window())->display_id =
+  GetRootWindowSettings(root_window())->display_id =
       gfx::Display::kInvalidDisplayID;
-  internal::GetRootWindowSettings(root_window())->shutdown = true;
+  GetRootWindowSettings(root_window())->shutdown = true;
 
   system_background_.reset();
   aura::client::SetScreenPositionClient(root_window(), NULL);
@@ -728,17 +724,14 @@ void RootWindowController::InitLayoutManagers() {
   aura::Window* always_on_top_container =
       GetContainer(kShellWindowId_AlwaysOnTopContainer);
   always_on_top_container->SetLayoutManager(
-      new internal::WorkspaceLayoutManager(
-          always_on_top_container));
-  always_on_top_controller_.reset(new internal::AlwaysOnTopController);
+      new WorkspaceLayoutManager(always_on_top_container));
+  always_on_top_controller_.reset(new AlwaysOnTopController);
   always_on_top_controller_->SetAlwaysOnTopContainer(always_on_top_container);
 
   DCHECK(!shelf_.get());
-  aura::Window* shelf_container =
-      GetContainer(internal::kShellWindowId_ShelfContainer);
+  aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
   // TODO(harrym): Remove when status area is view.
-  aura::Window* status_container =
-      GetContainer(internal::kShellWindowId_StatusContainer);
+  aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
   shelf_.reset(new ShelfWidget(
       shelf_container, status_container, workspace_controller()));
 
@@ -750,24 +743,20 @@ void RootWindowController::InitLayoutManagers() {
     mouse_event_target_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 
     aura::Window* lock_background_container =
-        GetContainer(internal::kShellWindowId_LockScreenBackgroundContainer);
+        GetContainer(kShellWindowId_LockScreenBackgroundContainer);
     lock_background_container->AddChild(mouse_event_target_.get());
     mouse_event_target_->Show();
   }
 
   // Create Docked windows layout manager
-  aura::Window* docked_container = GetContainer(
-      internal::kShellWindowId_DockedContainer);
+  aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
   docked_layout_manager_ =
-      new internal::DockedWindowLayoutManager(docked_container,
-                                              workspace_controller());
+      new DockedWindowLayoutManager(docked_container, workspace_controller());
   docked_container->SetLayoutManager(docked_layout_manager_);
 
   // Create Panel layout manager
-  aura::Window* panel_container = GetContainer(
-      internal::kShellWindowId_PanelContainer);
-  panel_layout_manager_ =
-      new internal::PanelLayoutManager(panel_container);
+  aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
+  panel_layout_manager_ = new PanelLayoutManager(panel_container);
   panel_container->SetLayoutManager(panel_layout_manager_);
   panel_container_handler_.reset(new PanelWindowEventHandler);
   panel_container->AddPreTargetHandler(panel_container_handler_.get());
@@ -918,8 +907,7 @@ void RootWindowController::CreateContainersInRootWindow(
       kShellWindowId_LockScreenContainer,
       "LockScreenContainer",
       lock_screen_containers);
-  lock_container->SetLayoutManager(
-      new internal::WorkspaceLayoutManager(lock_container));
+  lock_container->SetLayoutManager(new WorkspaceLayoutManager(lock_container));
   SetUsesScreenCoordinates(lock_container);
   // TODO(beng): stopsevents
 
@@ -1014,5 +1002,4 @@ RootWindowController* GetRootWindowController(
   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/root_window_controller.h b/ash/root_window_controller.h
index abb8b1f..e9f6b8e 100644
--- a/ash/root_window_controller.h
+++ b/ash/root_window_controller.h
@@ -47,12 +47,6 @@ class ScopedCaptureClient;
 }
 
 namespace ash {
-class ShelfWidget;
-class StackingController;
-class SystemTray;
-
-namespace internal {
-
 class AlwaysOnTopController;
 class AnimatingDesktopController;
 class DesktopBackgroundWidgetController;
@@ -61,9 +55,12 @@ class PanelLayoutManager;
 class RootWindowLayoutManager;
 class ScreenDimmer;
 class ShelfLayoutManager;
+class ShelfWidget;
+class StackingController;
 class StatusAreaWidget;
 class SystemBackgroundController;
 class SystemModalContainerLayoutManager;
+class SystemTray;
 class TouchHudDebug;
 class TouchHudProjection;
 class WorkspaceController;
@@ -102,7 +99,7 @@ class ASH_EXPORT RootWindowController : public ShellObserver {
   static RootWindowController* ForWindow(const aura::Window* window);
 
   // Returns the RootWindowController of the target root window.
-  static internal::RootWindowController* ForTargetRootWindow();
+  static RootWindowController* ForTargetRootWindow();
 
   // Returns container which contains a given |window|.
   static aura::Window* GetContainerForWindow(aura::Window* window);
@@ -320,7 +317,6 @@ class ASH_EXPORT RootWindowController : public ShellObserver {
 ASH_EXPORT RootWindowController* GetRootWindowController(
     const aura::Window* root_window);
 
-}  // namespace internal
 }  // ash
 
 #endif  //  ASH_ROOT_WINDOW_CONTROLLER_H_
diff --git a/ash/root_window_controller_unittest.cc b/ash/root_window_controller_unittest.cc
index 31b68f9..659423a 100644
--- a/ash/root_window_controller_unittest.cc
+++ b/ash/root_window_controller_unittest.cc
@@ -118,9 +118,8 @@ class RootWindowControllerTest : public test::AshTestBase {
   }
 
   aura::Window* GetModalContainer(aura::Window* root_window) {
-    return Shell::GetContainer(
-        root_window,
-        ash::internal::kShellWindowId_SystemModalContainer);
+    return Shell::GetContainer(root_window,
+                               ash::kShellWindowId_SystemModalContainer);
   }
 };
 
@@ -130,9 +129,8 @@ TEST_F(RootWindowControllerTest, MoveWindows_Basic) {
   // Windows origin should be doubled when moved to the 1st display.
   UpdateDisplay("600x600,300x300");
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
-  internal::RootWindowController* controller =
-      Shell::GetPrimaryRootWindowController();
-  internal::ShelfLayoutManager* shelf_layout_manager =
+  RootWindowController* controller = Shell::GetPrimaryRootWindowController();
+  ShelfLayoutManager* shelf_layout_manager =
       controller->GetShelfLayoutManager();
   shelf_layout_manager->SetAutoHideBehavior(
       ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
@@ -173,13 +171,13 @@ TEST_F(RootWindowControllerTest, MoveWindows_Basic) {
   unparented_control->Init(params);
   EXPECT_EQ(root_windows[1],
             unparented_control->GetNativeView()->GetRootWindow());
-  EXPECT_EQ(internal::kShellWindowId_UnparentedControlContainer,
+  EXPECT_EQ(kShellWindowId_UnparentedControlContainer,
             unparented_control->GetNativeView()->parent()->id());
 
   aura::Window* panel = CreateTestWindowInShellWithDelegateAndType(
       NULL, ui::wm::WINDOW_TYPE_PANEL, 0, gfx::Rect(700, 100, 100, 100));
   EXPECT_EQ(root_windows[1], panel->GetRootWindow());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, panel->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, panel->parent()->id());
 
   // Make sure a window that will delete itself when losing focus
   // will not crash.
@@ -248,12 +246,12 @@ TEST_F(RootWindowControllerTest, MoveWindows_Basic) {
   // Test if the unparented widget has moved.
   EXPECT_EQ(root_windows[0],
             unparented_control->GetNativeView()->GetRootWindow());
-  EXPECT_EQ(internal::kShellWindowId_UnparentedControlContainer,
+  EXPECT_EQ(kShellWindowId_UnparentedControlContainer,
             unparented_control->GetNativeView()->parent()->id());
 
   // Test if the panel has moved.
   EXPECT_EQ(root_windows[0], panel->GetRootWindow());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, panel->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, panel->parent()->id());
 }
 
 TEST_F(RootWindowControllerTest, MoveWindows_Modal) {
@@ -291,39 +289,42 @@ TEST_F(RootWindowControllerTest, MoveWindows_Modal) {
 TEST_F(RootWindowControllerTest, ModalContainer) {
   UpdateDisplay("600x600");
   Shell* shell = Shell::GetInstance();
-  internal::RootWindowController* controller =
-      shell->GetPrimaryRootWindowController();
+  RootWindowController* controller = shell->GetPrimaryRootWindowController();
   EXPECT_EQ(user::LOGGED_IN_USER,
             shell->system_tray_delegate()->GetUserLoginStatus());
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(NULL));
+                                kShellWindowId_SystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(NULL));
 
   views::Widget* session_modal_widget =
       CreateModalWidget(gfx::Rect(300, 10, 100, 100));
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(
-              session_modal_widget->GetNativeView()));
+                                kShellWindowId_SystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(
+                session_modal_widget->GetNativeView()));
 
   shell->session_state_delegate()->LockScreen();
   EXPECT_EQ(user::LOGGED_IN_LOCKED,
             shell->system_tray_delegate()->GetUserLoginStatus());
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(NULL));
+                                kShellWindowId_LockSystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(NULL));
 
-  aura::Window* lock_container =
-      Shell::GetContainer(controller->root_window(),
-                          internal::kShellWindowId_LockScreenContainer);
+  aura::Window* lock_container = Shell::GetContainer(
+      controller->root_window(), kShellWindowId_LockScreenContainer);
   views::Widget* lock_modal_widget =
       CreateModalWidgetWithParent(gfx::Rect(300, 10, 100, 100), lock_container);
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(
-              lock_modal_widget->GetNativeView()));
+                                kShellWindowId_LockSystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(
+                lock_modal_widget->GetNativeView()));
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_SystemModalContainer)->layout_manager(),
+                                kShellWindowId_SystemModalContainer)
+                ->layout_manager(),
             controller->GetSystemModalLayoutManager(
                 session_modal_widget->GetNativeView()));
 
@@ -341,21 +342,21 @@ TEST_F(RootWindowControllerTest, ModalContainerNotLoggedInLoggedIn) {
   EXPECT_EQ(0, shell->session_state_delegate()->NumberOfLoggedInUsers());
   EXPECT_FALSE(shell->session_state_delegate()->IsActiveUserSessionStarted());
 
-  internal::RootWindowController* controller =
-      shell->GetPrimaryRootWindowController();
+  RootWindowController* controller = shell->GetPrimaryRootWindowController();
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(NULL));
+                                kShellWindowId_LockSystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(NULL));
 
-  aura::Window* lock_container =
-      Shell::GetContainer(controller->root_window(),
-                          internal::kShellWindowId_LockScreenContainer);
+  aura::Window* lock_container = Shell::GetContainer(
+      controller->root_window(), kShellWindowId_LockScreenContainer);
   views::Widget* login_modal_widget =
       CreateModalWidgetWithParent(gfx::Rect(300, 10, 100, 100), lock_container);
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(
-              login_modal_widget->GetNativeView()));
+                                kShellWindowId_LockSystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(
+                login_modal_widget->GetNativeView()));
   login_modal_widget->Close();
 
   // Configure user session environment.
@@ -366,59 +367,64 @@ TEST_F(RootWindowControllerTest, ModalContainerNotLoggedInLoggedIn) {
   EXPECT_EQ(1, shell->session_state_delegate()->NumberOfLoggedInUsers());
   EXPECT_TRUE(shell->session_state_delegate()->IsActiveUserSessionStarted());
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(NULL));
+                                kShellWindowId_SystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(NULL));
 
   views::Widget* session_modal_widget =
         CreateModalWidget(gfx::Rect(300, 10, 100, 100));
   EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-      internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-          controller->GetSystemModalLayoutManager(
-              session_modal_widget->GetNativeView()));
+                                kShellWindowId_SystemModalContainer)
+                ->layout_manager(),
+            controller->GetSystemModalLayoutManager(
+                session_modal_widget->GetNativeView()));
 }
 
 TEST_F(RootWindowControllerTest, ModalContainerBlockedSession) {
   UpdateDisplay("600x600");
   Shell* shell = Shell::GetInstance();
-  internal::RootWindowController* controller =
-      shell->GetPrimaryRootWindowController();
-  aura::Window* lock_container =
-      Shell::GetContainer(controller->root_window(),
-                          internal::kShellWindowId_LockScreenContainer);
+  RootWindowController* controller = shell->GetPrimaryRootWindowController();
+  aura::Window* lock_container = Shell::GetContainer(
+      controller->root_window(), kShellWindowId_LockScreenContainer);
   for (int block_reason = FIRST_BLOCK_REASON;
        block_reason < NUMBER_OF_BLOCK_REASONS;
        ++block_reason) {
     views::Widget* session_modal_widget =
           CreateModalWidget(gfx::Rect(300, 10, 100, 100));
     EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-            controller->GetSystemModalLayoutManager(
-                session_modal_widget->GetNativeView()));
+                                  kShellWindowId_SystemModalContainer)
+                  ->layout_manager(),
+              controller->GetSystemModalLayoutManager(
+                  session_modal_widget->GetNativeView()));
     EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-            controller->GetSystemModalLayoutManager(NULL));
+                                  kShellWindowId_SystemModalContainer)
+                  ->layout_manager(),
+              controller->GetSystemModalLayoutManager(NULL));
     session_modal_widget->Close();
 
     BlockUserSession(static_cast<UserSessionBlockReason>(block_reason));
 
     EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
-            controller->GetSystemModalLayoutManager(NULL));
+                                  kShellWindowId_LockSystemModalContainer)
+                  ->layout_manager(),
+              controller->GetSystemModalLayoutManager(NULL));
 
     views::Widget* lock_modal_widget =
         CreateModalWidgetWithParent(gfx::Rect(300, 10, 100, 100),
                                     lock_container);
     EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_LockSystemModalContainer)->layout_manager(),
+                                  kShellWindowId_LockSystemModalContainer)
+                  ->layout_manager(),
               controller->GetSystemModalLayoutManager(
                   lock_modal_widget->GetNativeView()));
 
     session_modal_widget =
           CreateModalWidget(gfx::Rect(300, 10, 100, 100));
     EXPECT_EQ(Shell::GetContainer(controller->root_window(),
-        internal::kShellWindowId_SystemModalContainer)->layout_manager(),
-            controller->GetSystemModalLayoutManager(
-                session_modal_widget->GetNativeView()));
+                                  kShellWindowId_SystemModalContainer)
+                  ->layout_manager(),
+              controller->GetSystemModalLayoutManager(
+                  session_modal_widget->GetNativeView()));
     session_modal_widget->Close();
 
     lock_modal_widget->Close();
@@ -428,7 +434,7 @@ TEST_F(RootWindowControllerTest, ModalContainerBlockedSession) {
 
 TEST_F(RootWindowControllerTest, GetWindowForFullscreenMode) {
   UpdateDisplay("600x600");
-  internal::RootWindowController* controller =
+  RootWindowController* controller =
       Shell::GetInstance()->GetPrimaryRootWindowController();
 
   Widget* w1 = CreateTestWidget(gfx::Rect(0, 0, 100, 100));
@@ -500,11 +506,10 @@ TEST_F(RootWindowControllerTest, MultipleDisplaysGetWindowForFullscreenMode) {
 // some overlapping UI.
 TEST_F(RootWindowControllerTest, FocusBlockedWindow) {
   UpdateDisplay("600x600");
-  internal::RootWindowController* controller =
+  RootWindowController* controller =
       Shell::GetInstance()->GetPrimaryRootWindowController();
-  aura::Window* lock_container =
-      Shell::GetContainer(controller->root_window(),
-                          internal::kShellWindowId_LockScreenContainer);
+  aura::Window* lock_container = Shell::GetContainer(
+      controller->root_window(), kShellWindowId_LockScreenContainer);
   aura::Window* lock_window = Widget::CreateWindowWithParentAndBounds(NULL,
       lock_container, gfx::Rect(0, 0, 100, 100))->GetNativeView();
   lock_window->Show();
@@ -639,12 +644,10 @@ TEST_F(VirtualKeyboardRootWindowControllerTest,
       root_windows[0] == primary_root_window ?
           root_windows[1] : root_windows[0];
 
-  ASSERT_TRUE(Shell::GetContainer(
-      primary_root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer));
-  ASSERT_FALSE(Shell::GetContainer(
-      secondary_root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer));
+  ASSERT_TRUE(Shell::GetContainer(primary_root_window,
+                                  kShellWindowId_VirtualKeyboardContainer));
+  ASSERT_FALSE(Shell::GetContainer(secondary_root_window,
+                                   kShellWindowId_VirtualKeyboardContainer));
 }
 
 // Test for http://crbug.com/263599. Virtual keyboard should be able to receive
@@ -652,8 +655,8 @@ TEST_F(VirtualKeyboardRootWindowControllerTest,
 TEST_F(VirtualKeyboardRootWindowControllerTest,
        ClickVirtualKeyboardInBlockedWindow) {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
-  aura::Window* keyboard_container = Shell::GetContainer(root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer);
+  aura::Window* keyboard_container =
+      Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   ASSERT_TRUE(keyboard_container);
   keyboard_container->Show();
 
@@ -689,8 +692,8 @@ TEST_F(VirtualKeyboardRootWindowControllerTest,
 TEST_F(VirtualKeyboardRootWindowControllerTest,
        DeleteOldContainerOnVirtualKeyboardInit) {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
-  aura::Window* keyboard_container = Shell::GetContainer(root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer);
+  aura::Window* keyboard_container =
+      Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   ASSERT_TRUE(keyboard_container);
   // Track the keyboard container window.
   aura::WindowTracker tracker;
@@ -705,8 +708,8 @@ TEST_F(VirtualKeyboardRootWindowControllerTest,
 // full screen.
 TEST_F(VirtualKeyboardRootWindowControllerTest, RestoreWorkspaceAfterLogin) {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
-  aura::Window* keyboard_container = Shell::GetContainer(root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer);
+  aura::Window* keyboard_container =
+      Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   keyboard_container->Show();
   keyboard::KeyboardController* controller =
       Shell::GetInstance()->keyboard_controller();
@@ -733,8 +736,8 @@ TEST_F(VirtualKeyboardRootWindowControllerTest, RestoreWorkspaceAfterLogin) {
 // keyboard.
 TEST_F(VirtualKeyboardRootWindowControllerTest, ClickWithActiveModalDialog) {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
-  aura::Window* keyboard_container = Shell::GetContainer(root_window,
-      internal::kShellWindowId_VirtualKeyboardContainer);
+  aura::Window* keyboard_container =
+      Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   ASSERT_TRUE(keyboard_container);
   keyboard_container->Show();
 
diff --git a/ash/root_window_settings.cc b/ash/root_window_settings.cc
index 9f51bd9..555c4c8 100644
--- a/ash/root_window_settings.cc
+++ b/ash/root_window_settings.cc
@@ -8,10 +8,9 @@
 #include "ui/aura/window_property.h"
 #include "ui/gfx/display.h"
 
-DECLARE_WINDOW_PROPERTY_TYPE(ash::internal::RootWindowSettings*);
+DECLARE_WINDOW_PROPERTY_TYPE(ash::RootWindowSettings*);
 
 namespace ash {
-namespace internal {
 
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(RootWindowSettings,
                                  kRootWindowSettingsKey, NULL);
@@ -36,5 +35,4 @@ const RootWindowSettings* GetRootWindowSettings(const aura::Window* root) {
   return root->GetProperty(kRootWindowSettingsKey);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/root_window_settings.h b/ash/root_window_settings.h
index 3f497fc..4982ac5 100644
--- a/ash/root_window_settings.h
+++ b/ash/root_window_settings.h
@@ -13,7 +13,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
 
 class RootWindowController;
 
@@ -45,7 +44,6 @@ ASH_EXPORT RootWindowSettings* GetRootWindowSettings(aura::Window* root);
 ASH_EXPORT const RootWindowSettings*
 GetRootWindowSettings(const aura::Window* root);
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_ROOT_WINDOW_SETTINGS_H_
diff --git a/ash/scoped_target_root_window.cc b/ash/scoped_target_root_window.cc
index c34f4c3..72adc55 100644
--- a/ash/scoped_target_root_window.cc
+++ b/ash/scoped_target_root_window.cc
@@ -6,7 +6,6 @@
 #include "ash/shell.h"
 
 namespace ash {
-namespace internal {
 
 ScopedTargetRootWindow::ScopedTargetRootWindow(
     aura::Window* root_window) {
@@ -17,5 +16,4 @@ ScopedTargetRootWindow::~ScopedTargetRootWindow() {
   Shell::GetInstance()->scoped_target_root_window_ = NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/scoped_target_root_window.h b/ash/scoped_target_root_window.h
index c0ab7ef..0a74957 100644
--- a/ash/scoped_target_root_window.h
+++ b/ash/scoped_target_root_window.h
@@ -12,7 +12,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
 
 // Constructing a ScopedTargetRootWindow allows temporarily
 // switching a target root window so that a new window gets created
@@ -28,7 +27,6 @@ class ASH_EXPORT ScopedTargetRootWindow {
   DISALLOW_COPY_AND_ASSIGN(ScopedTargetRootWindow);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SCOPED_TARGET_ROOT_WINDOW_H_
diff --git a/ash/screen_util.cc b/ash/screen_util.cc
index 9d7404c..a412d70 100644
--- a/ash/screen_util.cc
+++ b/ash/screen_util.cc
@@ -20,7 +20,7 @@
 namespace ash {
 
 namespace {
-internal::DisplayManager* GetDisplayManager() {
+DisplayManager* GetDisplayManager() {
   return Shell::GetInstance()->display_manager();
 }
 }
@@ -32,7 +32,7 @@ gfx::Display ScreenUtil::FindDisplayContainingPoint(const gfx::Point& point) {
 
 // static
 gfx::Rect ScreenUtil::GetMaximizedWindowBoundsInParent(aura::Window* window) {
-  if (internal::GetRootWindowController(window->GetRootWindow())->shelf())
+  if (GetRootWindowController(window->GetRootWindow())->shelf())
     return GetDisplayWorkAreaBoundsInParent(window);
   else
     return GetDisplayBoundsInParent(window);
@@ -72,7 +72,7 @@ gfx::Rect ScreenUtil::ConvertRectFromScreen(aura::Window* window,
 
 // static
 const gfx::Display& ScreenUtil::GetSecondaryDisplay() {
-  internal::DisplayManager* display_manager = GetDisplayManager();
+  DisplayManager* display_manager = GetDisplayManager();
   CHECK_EQ(2U, display_manager->GetNumDisplays());
   return display_manager->GetDisplayAt(0).id() ==
       Shell::GetScreen()->GetPrimaryDisplay().id() ?
diff --git a/ash/screensaver/screensaver_view.cc b/ash/screensaver/screensaver_view.cc
index a974947..a47ddce 100644
--- a/ash/screensaver/screensaver_view.cc
+++ b/ash/screensaver/screensaver_view.cc
@@ -21,7 +21,7 @@ using content::BrowserThread;
 
 namespace {
 
-ash::internal::ScreensaverView* g_instance = NULL;
+ash::ScreensaverView* g_instance = NULL;
 
 // Do not restart the screensaver again if it has
 // terminated kMaxTerminations times already.
@@ -31,19 +31,11 @@ const int kMaxTerminations = 3;
 
 namespace ash {
 
-void ShowScreensaver(const GURL& url) {
-  internal::ScreensaverView::ShowScreensaver(url);
-}
-
-void CloseScreensaver() {
-  internal::ScreensaverView::CloseScreensaver();
-}
+void ShowScreensaver(const GURL& url) { ScreensaverView::ShowScreensaver(url); }
 
-bool IsScreensaverShown() {
-  return internal::ScreensaverView::IsScreensaverShown();
-}
+void CloseScreensaver() { ScreensaverView::CloseScreensaver(); }
 
-namespace internal {
+bool IsScreensaverShown() { return ScreensaverView::IsScreensaverShown(); }
 
 // static
 void ScreensaverView::ShowScreensaver(const GURL& url) {
@@ -166,5 +158,4 @@ ScreensaverView* ScreensaverView::GetInstance() {
   return g_instance;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/screensaver/screensaver_view.h b/ash/screensaver/screensaver_view.h
index cb565b8..1a01aa9 100644
--- a/ash/screensaver/screensaver_view.h
+++ b/ash/screensaver/screensaver_view.h
@@ -32,8 +32,6 @@ ASH_WITH_CONTENT_EXPORT bool IsScreensaverShown();
 typedef
     base::Callback<views::WebView*(content::BrowserContext*)> WebViewFactory;
 
-namespace internal {
-
 // Shows a URL as a screensaver. The screensaver window is fullscreen,
 // always on top of every other window and will reload the URL if the
 // renderer crashes for any reason.
@@ -88,7 +86,6 @@ class ScreensaverView : public views::WidgetDelegateView,
   DISALLOW_COPY_AND_ASSIGN(ScreensaverView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SCREENSAVER_SCREENSAVER_VIEW_H_
diff --git a/ash/screensaver/screensaver_view_unittest.cc b/ash/screensaver/screensaver_view_unittest.cc
index 0901ba4..19be19e 100644
--- a/ash/screensaver/screensaver_view_unittest.cc
+++ b/ash/screensaver/screensaver_view_unittest.cc
@@ -30,15 +30,14 @@ class ScreensaverViewTest : public ash::test::AshTestBase {
   }
 
   void ExpectOpenScreensaver() {
-    internal::ScreensaverView* screensaver =
-        internal::ScreensaverView::GetInstance();
+    ScreensaverView* screensaver = ScreensaverView::GetInstance();
     EXPECT_TRUE(screensaver != NULL);
     if (!screensaver) return;
     EXPECT_TRUE(screensaver->IsScreensaverShowingURL(url_));
   }
 
   void ExpectClosedScreensaver() {
-    EXPECT_TRUE(internal::ScreensaverView::GetInstance() == NULL);
+    EXPECT_TRUE(ScreensaverView::GetInstance() == NULL);
   }
 
  protected:
diff --git a/ash/shelf/alternate_app_list_button.cc b/ash/shelf/alternate_app_list_button.cc
index 8790fba..f6c8731 100644
--- a/ash/shelf/alternate_app_list_button.cc
+++ b/ash/shelf/alternate_app_list_button.cc
@@ -27,8 +27,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
-
 // static
 const int AlternateAppListButton::kImageBoundsSize = 7;
 
@@ -170,5 +168,4 @@ void AlternateAppListButton::GetAccessibleState(
   state->name = host_->GetAccessibleName(this);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/alternate_app_list_button.h b/ash/shelf/alternate_app_list_button.h
index f80078b..bd95632 100644
--- a/ash/shelf/alternate_app_list_button.h
+++ b/ash/shelf/alternate_app_list_button.h
@@ -8,15 +8,11 @@
 #include "ui/views/controls/button/image_button.h"
 
 namespace ash {
-
-class ShelfWidget;
-
-namespace internal {
-
 class ShelfButtonHost;
+class ShelfWidget;
 
 // Button used for the AppList icon on the shelf.
-// This class is an alternate implementation to ash::internal::AppListButton
+// This class is an alternate implementation to ash::AppListButton
 // for the purposes of testing an alternate shelf layout
 // (see ash_switches: UseAlternateShelfLayout).
 class AlternateAppListButton : public views::ImageButton {
@@ -53,7 +49,6 @@ class AlternateAppListButton : public views::ImageButton {
   DISALLOW_COPY_AND_ASSIGN(AlternateAppListButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_ALTERNATE_APP_LIST_BUTTON_H_
diff --git a/ash/shelf/app_list_button.cc b/ash/shelf/app_list_button.cc
index 56fc0e3..341fda5 100644
--- a/ash/shelf/app_list_button.cc
+++ b/ash/shelf/app_list_button.cc
@@ -21,7 +21,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
 
 const int kAnimationDurationInMs = 600;
 const float kAnimationOpacity[] = { 1.0f, 0.4f, 1.0f };
@@ -128,5 +127,4 @@ void AppListButton::GetAccessibleState(ui::AXViewState* state) {
   state->name = host_->GetAccessibleName(this);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/app_list_button.h b/ash/shelf/app_list_button.h
index 2326a11..c47fd6d 100644
--- a/ash/shelf/app_list_button.h
+++ b/ash/shelf/app_list_button.h
@@ -8,8 +8,6 @@
 #include "ui/views/controls/button/image_button.h"
 
 namespace ash {
-namespace internal {
-
 class ShelfButtonHost;
 
 // Button used for the AppList icon on the shelf.
@@ -38,7 +36,6 @@ class AppListButton : public views::ImageButton {
   DISALLOW_COPY_AND_ASSIGN(AppListButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_APP_LIST_BUTTON_H_
diff --git a/ash/shelf/app_list_shelf_item_delegate.cc b/ash/shelf/app_list_shelf_item_delegate.cc
index 18ff11d..4261027 100644
--- a/ash/shelf/app_list_shelf_item_delegate.cc
+++ b/ash/shelf/app_list_shelf_item_delegate.cc
@@ -11,7 +11,6 @@
 #include "ui/base/l10n/l10n_util.h"
 
 namespace ash {
-namespace internal {
 
 AppListShelfItemDelegate::AppListShelfItemDelegate() {
   ShelfItem app_list;
@@ -61,5 +60,4 @@ bool AppListShelfItemDelegate::ShouldShowTooltip() {
 void AppListShelfItemDelegate::Close() {
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/app_list_shelf_item_delegate.h b/ash/shelf/app_list_shelf_item_delegate.h
index d858229..2642730 100644
--- a/ash/shelf/app_list_shelf_item_delegate.h
+++ b/ash/shelf/app_list_shelf_item_delegate.h
@@ -10,7 +10,6 @@
 #include "base/compiler_specific.h"
 
 namespace ash {
-namespace internal {
 
 // ShelfItemDelegate for TYPE_APP_LIST.
 class AppListShelfItemDelegate : public ShelfItemDelegate {
@@ -32,7 +31,6 @@ class AppListShelfItemDelegate : public ShelfItemDelegate {
   DISALLOW_COPY_AND_ASSIGN(AppListShelfItemDelegate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_APP_LIST_SHELF_ITEM_DELEGATE_H_
diff --git a/ash/shelf/background_animator.cc b/ash/shelf/background_animator.cc
index 8137d60..288791a 100644
--- a/ash/shelf/background_animator.cc
+++ b/ash/shelf/background_animator.cc
@@ -6,8 +6,6 @@
 
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Duration of the background animation.
@@ -58,5 +56,4 @@ void BackgroundAnimator::AnimationProgressed(const gfx::Animation* animation) {
   delegate_->UpdateBackground(alpha_);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/background_animator.h b/ash/shelf/background_animator.h
index 805f7d5..37be3be 100644
--- a/ash/shelf/background_animator.h
+++ b/ash/shelf/background_animator.h
@@ -18,8 +18,6 @@ enum BackgroundAnimatorChangeType {
   BACKGROUND_CHANGE_IMMEDIATE
 };
 
-namespace internal {
-
 // Delegate is notified any time the background changes.
 class ASH_EXPORT BackgroundAnimatorDelegate {
  public:
@@ -69,7 +67,6 @@ class ASH_EXPORT BackgroundAnimator : public gfx::AnimationDelegate {
   DISALLOW_COPY_AND_ASSIGN(BackgroundAnimator);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_BACKGROUND_ANIMATOR_H_
diff --git a/ash/shelf/overflow_bubble.cc b/ash/shelf/overflow_bubble.cc
index 8a58d87..f7cc659 100644
--- a/ash/shelf/overflow_bubble.cc
+++ b/ash/shelf/overflow_bubble.cc
@@ -18,7 +18,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 OverflowBubble::OverflowBubble()
     : bubble_(NULL),
@@ -100,5 +99,4 @@ void OverflowBubble::OnWidgetDestroying(views::Widget* widget) {
       widget->GetNativeView())->shelf_widget()->shelf()->SchedulePaint();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/overflow_bubble.h b/ash/shelf/overflow_bubble.h
index 26bdf7a..7c3109c 100644
--- a/ash/shelf/overflow_bubble.h
+++ b/ash/shelf/overflow_bubble.h
@@ -19,9 +19,6 @@ class View;
 }
 
 namespace ash {
-
-namespace internal {
-
 class OverflowBubbleView;
 class ShelfLayoutManager;
 class ShelfView;
@@ -63,7 +60,6 @@ class OverflowBubble : public ui::EventHandler,
   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_
diff --git a/ash/shelf/overflow_bubble_view.cc b/ash/shelf/overflow_bubble_view.cc
index 6dc6802..720a693 100644
--- a/ash/shelf/overflow_bubble_view.cc
+++ b/ash/shelf/overflow_bubble_view.cc
@@ -19,8 +19,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Max bubble size to screen size ratio.
@@ -65,7 +63,7 @@ void OverflowBubbleView::InitOverflowBubble(views::View* anchor,
 
   set_parent_window(Shell::GetContainer(
       anchor->GetWidget()->GetNativeWindow()->GetRootWindow(),
-      internal::kShellWindowId_ShelfBubbleContainer));
+      kShellWindowId_ShelfBubbleContainer));
   views::BubbleDelegateView::CreateBubble(this);
 }
 
@@ -223,5 +221,4 @@ gfx::Rect OverflowBubbleView::GetBubbleBounds() {
   return bubble_rect;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/overflow_bubble_view.h b/ash/shelf/overflow_bubble_view.h
index e8533c1..58f80be 100644
--- a/ash/shelf/overflow_bubble_view.h
+++ b/ash/shelf/overflow_bubble_view.h
@@ -11,16 +11,13 @@
 #include "ui/views/bubble/bubble_delegate.h"
 
 namespace ash {
+class ShelfLayoutManager;
+class ShelfView;
 
 namespace test {
 class OverflowBubbleViewTestAPI;
 }
 
-namespace internal {
-
-class ShelfLayoutManager;
-class ShelfView;
-
 // OverflowBubbleView hosts a ShelfView to display overflown items.
 // Exports to access this class from OverflowBubbleViewTestAPI.
 class ASH_EXPORT OverflowBubbleView : public views::BubbleDelegateView {
@@ -63,7 +60,6 @@ class ASH_EXPORT OverflowBubbleView : public views::BubbleDelegateView {
   DISALLOW_COPY_AND_ASSIGN(OverflowBubbleView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_VIEW_H_
diff --git a/ash/shelf/overflow_button.cc b/ash/shelf/overflow_button.cc
index 3c899ef..9ebc8d4 100644
--- a/ash/shelf/overflow_button.cc
+++ b/ash/shelf/overflow_button.cc
@@ -22,8 +22,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kButtonHoverAlpha = 150;
@@ -171,5 +169,4 @@ void OverflowButton::OnPaint(gfx::Canvas* canvas) {
                        bounds.y() + ((bounds.height() - image->height()) / 2));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/overflow_button.h b/ash/shelf/overflow_button.h
index 9e73505..aca781d 100644
--- a/ash/shelf/overflow_button.h
+++ b/ash/shelf/overflow_button.h
@@ -12,7 +12,6 @@
 #include "ui/views/controls/button/custom_button.h"
 
 namespace ash {
-namespace internal {
 
 // Shelf overflow chevron button.
 class OverflowButton : public views::CustomButton {
@@ -38,7 +37,6 @@ class OverflowButton : public views::CustomButton {
   DISALLOW_COPY_AND_ASSIGN(OverflowButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUTTON_H_
diff --git a/ash/shelf/shelf.cc b/ash/shelf/shelf.cc
index c973157..2d988fc 100644
--- a/ash/shelf/shelf.cc
+++ b/ash/shelf/shelf.cc
@@ -49,7 +49,7 @@ Shelf::Shelf(ShelfModel* shelf_model,
       alignment_(shelf_widget->GetAlignment()),
       delegate_(shelf_delegate),
       shelf_widget_(shelf_widget) {
-  shelf_view_ = new internal::ShelfView(
+  shelf_view_ = new ShelfView(
       shelf_model, delegate_, shelf_widget_->shelf_layout_manager());
   shelf_view_->Init();
   shelf_widget_->GetContentsView()->AddChildView(shelf_view_);
@@ -63,15 +63,14 @@ Shelf::~Shelf() {
 
 // static
 Shelf* Shelf::ForPrimaryDisplay() {
-  ShelfWidget* shelf_widget = internal::RootWindowController::ForShelf(
-      Shell::GetPrimaryRootWindow())->shelf();
+  ShelfWidget* shelf_widget =
+      RootWindowController::ForShelf(Shell::GetPrimaryRootWindow())->shelf();
   return shelf_widget ? shelf_widget->shelf() : NULL;
 }
 
 // static
 Shelf* Shelf::ForWindow(aura::Window* window) {
-  ShelfWidget* shelf_widget =
-      internal::RootWindowController::ForShelf(window)->shelf();
+  ShelfWidget* shelf_widget = RootWindowController::ForShelf(window)->shelf();
   return shelf_widget ? shelf_widget->shelf() : NULL;
 }
 
diff --git a/ash/shelf/shelf.h b/ash/shelf/shelf.h
index 03cc2b0..2b06d82 100644
--- a/ash/shelf/shelf.h
+++ b/ash/shelf/shelf.h
@@ -30,21 +30,18 @@ class View;
 }
 
 namespace ash {
-
-namespace internal {
 class FocusCycler;
+class ShelfDelegate;
+class ShelfIconObserver;
 class ShelfLayoutManager;
+class ShelfModel;
 class ShelfView;
-}
+class ShelfWidget;
 
 namespace test {
 class ShelfTestAPI;
 }
 
-class ShelfDelegate;
-class ShelfIconObserver;
-class ShelfModel;
-class ShelfWidget;
 
 class ASH_EXPORT Shelf {
  public:
@@ -115,7 +112,7 @@ class ASH_EXPORT Shelf {
   friend class test::ShelfTestAPI;
 
   // ShelfView used to display icons.
-  internal::ShelfView* shelf_view_;
+  ShelfView* shelf_view_;
 
   ShelfAlignment alignment_;
 
diff --git a/ash/shelf/shelf_alignment_menu.cc b/ash/shelf/shelf_alignment_menu.cc
index 84fe792..4fbba2e 100644
--- a/ash/shelf/shelf_alignment_menu.cc
+++ b/ash/shelf/shelf_alignment_menu.cc
@@ -34,12 +34,11 @@ ShelfAlignmentMenu::ShelfAlignmentMenu(aura::Window* root)
 ShelfAlignmentMenu::~ShelfAlignmentMenu() {}
 
 bool ShelfAlignmentMenu::IsCommandIdChecked(int command_id) const {
-  return internal::ShelfLayoutManager::ForShelf(root_window_)->
-      SelectValueForShelfAlignment(
-          MENU_ALIGN_BOTTOM == command_id,
-          MENU_ALIGN_LEFT == command_id,
-          MENU_ALIGN_RIGHT == command_id,
-          false);
+  return ShelfLayoutManager::ForShelf(root_window_)
+      ->SelectValueForShelfAlignment(MENU_ALIGN_BOTTOM == command_id,
+                                     MENU_ALIGN_LEFT == command_id,
+                                     MENU_ALIGN_RIGHT == command_id,
+                                     false);
 }
 
 bool ShelfAlignmentMenu::IsCommandIdEnabled(int command_id) const {
diff --git a/ash/shelf/shelf_bezel_event_filter.cc b/ash/shelf/shelf_bezel_event_filter.cc
index 2c4f648..513a949 100644
--- a/ash/shelf/shelf_bezel_event_filter.cc
+++ b/ash/shelf/shelf_bezel_event_filter.cc
@@ -10,7 +10,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 ShelfBezelEventFilter::ShelfBezelEventFilter(
     ShelfLayoutManager* shelf)
@@ -74,5 +73,4 @@ bool ShelfBezelEventFilter::IsShelfOnBezel(
   return false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_bezel_event_filter.h b/ash/shelf/shelf_bezel_event_filter.h
index 33d1f5e..4bded4a 100644
--- a/ash/shelf/shelf_bezel_event_filter.h
+++ b/ash/shelf/shelf_bezel_event_filter.h
@@ -10,7 +10,6 @@
 #include "ui/gfx/rect.h"
 
 namespace ash {
-namespace internal {
 class ShelfLayoutManager;
 
 // Detects and forwards touch gestures that occur on a bezel sensor to the
@@ -33,7 +32,6 @@ class ShelfBezelEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(ShelfBezelEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_BEZEL_EVENT_FILTER_H_
diff --git a/ash/shelf/shelf_button.cc b/ash/shelf/shelf_button.cc
index ebd8110..7a740a6 100644
--- a/ash/shelf/shelf_button.cc
+++ b/ash/shelf/shelf_button.cc
@@ -40,9 +40,9 @@ const int kHopDownMS = 200;
 const int kAttentionThrobDurationMS = 800;
 
 bool ShouldHop(int state) {
-  return state & ash::internal::ShelfButton::STATE_HOVERED ||
-         state & ash::internal::ShelfButton::STATE_ACTIVE ||
-         state & ash::internal::ShelfButton::STATE_FOCUSED;
+  return state & ash::ShelfButton::STATE_HOVERED ||
+         state & ash::ShelfButton::STATE_ACTIVE ||
+         state & ash::ShelfButton::STATE_FOCUSED;
 }
 
 // Simple AnimationDelegate that owns a single ThrobAnimation instance to
@@ -116,7 +116,6 @@ class ShelfButtonAnimation : public gfx::AnimationDelegate {
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 ////////////////////////////////////////////////////////////////////////////////
 // ShelfButton::BarView
@@ -590,5 +589,4 @@ void ShelfButton::UpdateBar() {
   bar_->SetVisible(bar_id != 0 && state_ != STATE_NORMAL);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_button.h b/ash/shelf/shelf_button.h
index 3f9b45e..96fab24 100644
--- a/ash/shelf/shelf_button.h
+++ b/ash/shelf/shelf_button.h
@@ -11,8 +11,6 @@
 #include "ui/views/controls/image_view.h"
 
 namespace ash {
-namespace internal {
-
 class ShelfButtonHost;
 class ShelfLayoutManager;
 
@@ -154,7 +152,6 @@ class ASH_EXPORT ShelfButton : public views::CustomButton {
   DISALLOW_COPY_AND_ASSIGN(ShelfButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_BUTTON_H_
diff --git a/ash/shelf/shelf_button_host.h b/ash/shelf/shelf_button_host.h
index d3b3fa2..b664c7f 100644
--- a/ash/shelf/shelf_button_host.h
+++ b/ash/shelf/shelf_button_host.h
@@ -17,7 +17,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 // The shelf buttons communicate back to the host by way of this interface.
 // This interface is used to enable reordering the items on the shelf.
@@ -61,7 +60,6 @@ class ASH_EXPORT ShelfButtonHost {
   virtual ~ShelfButtonHost() {}
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_BUTTON_HOST_H_
diff --git a/ash/shelf/shelf_layout_manager.cc b/ash/shelf/shelf_layout_manager.cc
index 8db87f4..c92c6f2 100644
--- a/ash/shelf/shelf_layout_manager.cc
+++ b/ash/shelf/shelf_layout_manager.cc
@@ -50,8 +50,6 @@
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Delay before showing the shelf. This is after the mouse stops moving.
@@ -1184,5 +1182,4 @@ void ShelfLayoutManager::OnLockStateEvent(LockStateObserver::EventType event) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_layout_manager.h b/ash/shelf/shelf_layout_manager.h
index 4e03c7a..8054746 100644
--- a/ash/shelf/shelf_layout_manager.h
+++ b/ash/shelf/shelf_layout_manager.h
@@ -38,18 +38,15 @@ class ImplicitAnimationObserver;
 }
 
 namespace ash {
-class ScreenAsh;
-class ShelfLayoutManagerObserver;
-class ShelfWidget;
-FORWARD_DECLARE_TEST(WebNotificationTrayTest, PopupAndFullscreen);
-
-namespace internal {
-
 class PanelLayoutManagerTest;
+class ScreenAsh;
 class ShelfBezelEventFilter;
+class ShelfLayoutManagerObserver;
 class ShelfLayoutManagerTest;
+class ShelfWidget;
 class StatusAreaWidget;
 class WorkspaceController;
+FORWARD_DECLARE_TEST(WebNotificationTrayTest, PopupAndFullscreen);
 
 // ShelfLayoutManager is the layout manager responsible for the shelf and
 // status widgets. The shelf is given the total available width and told the
@@ -417,7 +414,6 @@ class ASH_EXPORT ShelfLayoutManager :
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
diff --git a/ash/shelf/shelf_layout_manager_unittest.cc b/ash/shelf/shelf_layout_manager_unittest.cc
index 9217b2a..81ecc9f 100644
--- a/ash/shelf/shelf_layout_manager_unittest.cc
+++ b/ash/shelf/shelf_layout_manager_unittest.cc
@@ -47,8 +47,6 @@
 #endif
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 void StepWidgetLayerAnimatorToEnd(views::Widget* widget) {
@@ -1015,8 +1013,7 @@ TEST_F(ShelfLayoutManagerTest, VisibleWhenLockScreenShowing) {
             GetShelfWidget()->GetWindowBoundsInScreen().y());
 
   aura::Window* lock_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_LockScreenContainer);
+      Shell::GetPrimaryRootWindow(), kShellWindowId_LockScreenContainer);
 
   views::Widget* lock_widget = new views::Widget;
   views::Widget::InitParams lock_params(
@@ -2056,5 +2053,4 @@ TEST_F(ShelfLayoutManagerTest, MAYBE_StatusAreaHitBoxCoversEdge) {
   EXPECT_FALSE(status_area_widget->IsMessageBubbleShown());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_tooltip_manager.cc b/ash/shelf/shelf_tooltip_manager.cc
index 15afb08..ecfcaa3 100644
--- a/ash/shelf/shelf_tooltip_manager.cc
+++ b/ash/shelf/shelf_tooltip_manager.cc
@@ -25,7 +25,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 const int kTooltipTopBottomMargin = 3;
 const int kTooltipLeftRightMargin = 10;
@@ -99,7 +98,7 @@ ShelfTooltipManager::ShelfTooltipBubble::ShelfTooltipBubble(
     aura::Window* root_window =
         anchor->GetWidget()->GetNativeView()->GetRootWindow();
     set_parent_window(ash::Shell::GetInstance()->GetContainer(
-        root_window, ash::internal::kShellWindowId_SettingBubbleContainer));
+        root_window, ash::kShellWindowId_SettingBubbleContainer));
   }
   label_ = new views::Label;
   label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
@@ -375,5 +374,4 @@ void ShelfTooltipManager::CreateTimer(int delay_in_ms) {
   timer_.reset(new_timer);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_tooltip_manager.h b/ash/shelf/shelf_tooltip_manager.h
index 5bb5f09..d7ca088 100644
--- a/ash/shelf/shelf_tooltip_manager.h
+++ b/ash/shelf/shelf_tooltip_manager.h
@@ -26,15 +26,14 @@ class Label;
 }
 
 namespace ash {
+class ShelfView;
+class ShelfLayoutManager;
+
 namespace test {
 class ShelfTooltipManagerTest;
 class ShelfViewTest;
 }
 
-namespace internal {
-class ShelfView;
-class ShelfLayoutManager;
-
 // ShelfTooltipManager manages the tooltip balloon poping up on shelf items.
 class ASH_EXPORT ShelfTooltipManager : public ui::EventHandler,
                                        public ShelfLayoutManagerObserver {
@@ -115,7 +114,6 @@ protected:
   DISALLOW_COPY_AND_ASSIGN(ShelfTooltipManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_TOOLTIP_MANAGER_H_
diff --git a/ash/shelf/shelf_tooltip_manager_unittest.cc b/ash/shelf/shelf_tooltip_manager_unittest.cc
index 7ce38df..c9096c9 100644
--- a/ash/shelf/shelf_tooltip_manager_unittest.cc
+++ b/ash/shelf/shelf_tooltip_manager_unittest.cc
@@ -42,9 +42,8 @@ class ShelfTooltipManagerTest : public AshTestBase {
 
   virtual void SetUp() OVERRIDE {
     AshTestBase::SetUp();
-    internal::RootWindowController* controller =
-        Shell::GetPrimaryRootWindowController();
-    tooltip_manager_.reset(new internal::ShelfTooltipManager(
+    RootWindowController* controller = Shell::GetPrimaryRootWindowController();
+    tooltip_manager_.reset(new ShelfTooltipManager(
         controller->GetShelfLayoutManager(),
         ShelfTestAPI(controller->shelf()->shelf()).shelf_view()));
   }
@@ -83,7 +82,7 @@ class ShelfTooltipManagerTest : public AshTestBase {
  protected:
   scoped_ptr<views::Widget> widget_;
   scoped_ptr<views::View> dummy_anchor_;
-  scoped_ptr<internal::ShelfTooltipManager> tooltip_manager_;
+  scoped_ptr<ShelfTooltipManager> tooltip_manager_;
 
  private:
   void CreateWidget() {
@@ -94,9 +93,8 @@ class ShelfTooltipManagerTest : public AshTestBase {
         views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
     params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
     params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-    params.parent = Shell::GetContainer(
-        Shell::GetPrimaryRootWindow(),
-        ash::internal::kShellWindowId_ShelfContainer);
+    params.parent = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                                        ash::kShellWindowId_ShelfContainer);
 
     widget_->Init(params);
     widget_->SetContentsView(dummy_anchor_.get());
@@ -157,7 +155,7 @@ TEST_F(ShelfTooltipManagerTest, HideWhenShelfIsAutoHide) {
   ShowImmediately();
   ASSERT_TRUE(TooltipIsVisible());
 
-  internal::ShelfLayoutManager* shelf =
+  ShelfLayoutManager* shelf =
       Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
   shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
   shelf->UpdateAutoHideState();
diff --git a/ash/shelf/shelf_unittest.cc b/ash/shelf/shelf_unittest.cc
index 0df9a48..01380bc 100644
--- a/ash/shelf/shelf_unittest.cc
+++ b/ash/shelf/shelf_unittest.cc
@@ -24,8 +24,8 @@
 #include "base/win/windows_version.h"
 #endif
 
-using ash::internal::ShelfView;
-using ash::internal::ShelfButton;
+using ash::ShelfView;
+using ash::ShelfButton;
 
 namespace ash {
 
diff --git a/ash/shelf/shelf_view.cc b/ash/shelf/shelf_view.cc
index 239f155..590fbf9 100644
--- a/ash/shelf/shelf_view.cc
+++ b/ash/shelf/shelf_view.cc
@@ -61,7 +61,6 @@ using gfx::Animation;
 using views::View;
 
 namespace ash {
-namespace internal {
 
 const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM = 0;
 const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT = 1;
@@ -566,7 +565,7 @@ void ShelfView::CreateDragIconProxy(
     const gfx::Vector2d& cursor_offset_from_center,
     float scale_factor) {
   drag_replaced_view_ = replaced_view;
-  drag_image_.reset(new ash::internal::DragImageView(
+  drag_image_.reset(new ash::DragImageView(
       drag_replaced_view_->GetWidget()->GetNativeWindow()->GetRootWindow(),
       ui::DragDropTypes::DRAG_EVENT_SOURCE_MOUSE));
   drag_image_->SetImage(icon);
@@ -2057,5 +2056,4 @@ int ShelfView::CalculateShelfDistance(const gfx::Point& coordinate) const {
   return distance > 0 ? distance : 0;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_view.h b/ash/shelf/shelf_view.h
index 6cd44e0..0d6f0b7 100644
--- a/ash/shelf/shelf_view.h
+++ b/ash/shelf/shelf_view.h
@@ -27,19 +27,11 @@ class ViewModel;
 }
 
 namespace ash {
-
-namespace test {
-class ShelfViewTestAPI;
-}
-
 class ShelfDelegate;
 class ShelfIconObserver;
 class ShelfItemDelegateManager;
 class ShelfModel;
 struct ShelfItem;
-
-namespace internal {
-
 class DragImageView;
 class OverflowBubble;
 class OverflowButton;
@@ -47,6 +39,10 @@ class ShelfButton;
 class ShelfLayoutManager;
 class ShelfTooltipManager;
 
+namespace test {
+class ShelfViewTestAPI;
+}
+
 extern const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM;
 extern const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT;
 extern const int SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT;
@@ -420,7 +416,7 @@ class ASH_EXPORT ShelfView : public views::View,
 
   // The image proxy for drag operations when a drag and drop host exists and
   // the item can be dragged outside the app grid.
-  scoped_ptr<ash::internal::DragImageView> drag_image_;
+  scoped_ptr<ash::DragImageView> drag_image_;
 
   // The cursor offset to the middle of the dragged item.
   gfx::Vector2d drag_image_offset_;
@@ -452,7 +448,6 @@ class ASH_EXPORT ShelfView : public views::View,
   DISALLOW_COPY_AND_ASSIGN(ShelfView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_VIEW_H_
diff --git a/ash/shelf/shelf_view_unittest.cc b/ash/shelf/shelf_view_unittest.cc
index 3b9956e..a2faa65 100644
--- a/ash/shelf/shelf_view_unittest.cc
+++ b/ash/shelf/shelf_view_unittest.cc
@@ -270,8 +270,8 @@ class ShelfViewTest : public AshTestBase {
     shelf_view_ = ShelfTestAPI(shelf).shelf_view();
 
     // The bounds should be big enough for 4 buttons + overflow chevron.
-    shelf_view_->SetBounds(0, 0, 500,
-        internal::ShelfLayoutManager::GetPreferredShelfSize());
+    shelf_view_->SetBounds(
+        0, 0, 500, ShelfLayoutManager::GetPreferredShelfSize());
 
     test_api_.reset(new ShelfViewTestAPI(shelf_view_));
     test_api_->SetAnimationDuration(1);  // Speeds up animation for test.
@@ -356,7 +356,7 @@ class ShelfViewTest : public AshTestBase {
     test_api_->RunMessageLoopUntilAnimationsDone();
   }
 
-  internal::ShelfButton* GetButtonByID(ShelfID id) {
+  ShelfButton* GetButtonByID(ShelfID id) {
     int index = model_->ItemIndexByID(id);
     return test_api_->GetButton(index);
   }
@@ -394,10 +394,9 @@ class ShelfViewTest : public AshTestBase {
     }
   }
 
-  views::View* SimulateButtonPressed(
-      internal::ShelfButtonHost::Pointer pointer,
-      int button_index) {
-    internal::ShelfButtonHost* button_host = shelf_view_;
+  views::View* SimulateButtonPressed(ShelfButtonHost::Pointer pointer,
+                                     int button_index) {
+    ShelfButtonHost* button_host = shelf_view_;
     views::View* button = test_api_->GetButton(button_index);
     ui::MouseEvent click_event(ui::ET_MOUSE_PRESSED,
                                button->bounds().origin(),
@@ -406,20 +405,18 @@ class ShelfViewTest : public AshTestBase {
     return button;
   }
 
-  views::View* SimulateClick(internal::ShelfButtonHost::Pointer pointer,
+  views::View* SimulateClick(ShelfButtonHost::Pointer pointer,
                              int button_index) {
-    internal::ShelfButtonHost* button_host = shelf_view_;
+    ShelfButtonHost* button_host = shelf_view_;
     views::View* button = SimulateButtonPressed(pointer, button_index);
-    button_host->PointerReleasedOnButton(button,
-                                         internal::ShelfButtonHost::MOUSE,
-                                         false);
+    button_host->PointerReleasedOnButton(button, ShelfButtonHost::MOUSE, false);
     return button;
   }
 
-  views::View* SimulateDrag(internal::ShelfButtonHost::Pointer pointer,
+  views::View* SimulateDrag(ShelfButtonHost::Pointer pointer,
                             int button_index,
                             int destination_index) {
-    internal::ShelfButtonHost* button_host = shelf_view_;
+    ShelfButtonHost* button_host = shelf_view_;
     views::View* button = SimulateButtonPressed(pointer, button_index);
 
     // Drag.
@@ -435,7 +432,7 @@ class ShelfViewTest : public AshTestBase {
       std::vector<std::pair<ShelfID, views::View*> >* id_map) {
     // Initialize |id_map| with the automatically-created shelf buttons.
     for (size_t i = 0; i < model_->items().size(); ++i) {
-      internal::ShelfButton* button = test_api_->GetButton(i);
+      ShelfButton* button = test_api_->GetButton(i);
       id_map->push_back(std::make_pair(model_->items()[i].id, button));
     }
     ASSERT_NO_FATAL_FAILURE(CheckModelIDs(*id_map));
@@ -490,8 +487,7 @@ class ShelfViewTest : public AshTestBase {
     int drag_item_index =
         test_api_for_overflow.GetLastVisibleIndex();
     ShelfID drag_item_id = GetItemId(drag_item_index);
-    internal::ShelfButton* drag_button =
-        test_api_for_overflow.GetButton(drag_item_index);
+    ShelfButton* drag_button = test_api_for_overflow.GetButton(drag_item_index);
     gfx::Point center_point_of_drag_item =
         drag_button->GetBoundsInScreen().CenterPoint();
 
@@ -572,7 +568,7 @@ class ShelfViewTest : public AshTestBase {
   }
 
   ShelfModel* model_;
-  internal::ShelfView* shelf_view_;
+  ShelfView* shelf_view_;
   int browser_index_;
   ShelfItemDelegateManager* item_manager_;
 
@@ -649,7 +645,7 @@ class ShelfViewTextDirectionTest
 // in both LTR and RTL.
 TEST_P(ShelfViewTextDirectionTest, IdealBoundsOfItemIcon) {
   ShelfID id = AddPlatformApp();
-  internal::ShelfButton* button = GetButtonByID(id);
+  ShelfButton* button = GetButtonByID(id);
   gfx::Rect item_bounds = button->GetBoundsInScreen();
   gfx::Point icon_offset = button->GetIconBounds().origin();
   item_bounds.Offset(icon_offset.OffsetFromOrigin());
@@ -946,7 +942,7 @@ TEST_F(ShelfViewTest, AddButtonQuickly) {
 
   // Verifies non-overflow buttons are visible.
   for (int i = 0; i <= test_api_->GetLastVisibleIndex(); ++i) {
-    internal::ShelfButton* button = test_api_->GetButton(i);
+    ShelfButton* button = test_api_->GetButton(i);
     if (button) {
       EXPECT_TRUE(button->visible()) << "button index=" << i;
       EXPECT_EQ(1.0f, button->layer()->opacity()) << "button index=" << i;
@@ -957,205 +953,189 @@ TEST_F(ShelfViewTest, AddButtonQuickly) {
 // Check that model changes are handled correctly while a shelf icon is being
 // dragged.
 TEST_F(ShelfViewTest, ModelChangesWhileDragging) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
+  ShelfButtonHost* button_host = shelf_view_;
 
   std::vector<std::pair<ShelfID, views::View*> > id_map;
   SetupForDragTest(&id_map);
 
   // Dragging browser shortcut at index 1.
   EXPECT_TRUE(model_->items()[1].type == TYPE_BROWSER_SHORTCUT);
-  views::View* dragged_button = SimulateDrag(
-      internal::ShelfButtonHost::MOUSE, 1, 3);
+  views::View* dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   std::rotate(id_map.begin() + 1,
               id_map.begin() + 2,
               id_map.begin() + 4);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
   EXPECT_TRUE(model_->items()[3].type == TYPE_BROWSER_SHORTCUT);
 
   // Dragging changes model order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 1, 3);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   std::rotate(id_map.begin() + 1,
               id_map.begin() + 2,
               id_map.begin() + 4);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Cancelling the drag operation restores previous order.
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       true);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, true);
   std::rotate(id_map.begin() + 1,
               id_map.begin() + 3,
               id_map.begin() + 4);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Deleting an item keeps the remaining intact.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 1, 3);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   model_->RemoveItemAt(1);
   id_map.erase(id_map.begin() + 1);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 
   // Adding a shelf item cancels the drag and respects the order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 1, 3);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   ShelfID new_id = AddAppShortcut();
   id_map.insert(id_map.begin() + 6,
                 std::make_pair(new_id, GetButtonByID(new_id)));
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 
   // Adding a shelf item at the end (i.e. a panel)  canels drag and respects
   // the order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 1, 3);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   new_id = AddPanel();
   id_map.insert(id_map.begin() + 7,
                 std::make_pair(new_id, GetButtonByID(new_id)));
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 }
 
 TEST_F(ShelfViewLegacyShelfLayoutTest, ModelChangesWhileDragging) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
+  ShelfButtonHost* button_host = shelf_view_;
 
   std::vector<std::pair<ShelfID, views::View*> > id_map;
   SetupForDragTest(&id_map);
 
   // Dragging browser shortcut at index 0.
   EXPECT_TRUE(model_->items()[0].type == TYPE_BROWSER_SHORTCUT);
-  views::View* dragged_button = SimulateDrag(
-      internal::ShelfButtonHost::MOUSE, 0, 2);
+  views::View* dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 0, 2);
   std::rotate(id_map.begin(),
               id_map.begin() + 1,
               id_map.begin() + 3);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
   EXPECT_TRUE(model_->items()[2].type == TYPE_BROWSER_SHORTCUT);
 
   // Dragging changes model order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 0, 2);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 0, 2);
   std::rotate(id_map.begin(),
               id_map.begin() + 1,
               id_map.begin() + 3);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Cancelling the drag operation restores previous order.
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       true);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, true);
   std::rotate(id_map.begin(),
               id_map.begin() + 2,
               id_map.begin() + 3);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Deleting an item keeps the remaining intact.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 0, 2);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 0, 2);
   model_->RemoveItemAt(1);
   id_map.erase(id_map.begin() + 1);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 
   // Adding a shelf item cancels the drag and respects the order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 0, 2);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 0, 2);
   ShelfID new_id = AddAppShortcut();
   id_map.insert(id_map.begin() + 5,
                 std::make_pair(new_id, GetButtonByID(new_id)));
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 
   // Adding a shelf item at the end (i.e. a panel)  canels drag and respects
   // the order.
-  dragged_button = SimulateDrag(internal::ShelfButtonHost::MOUSE, 0, 2);
+  dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 0, 2);
   new_id = AddPanel();
   id_map.insert(id_map.begin() + 7,
                 std::make_pair(new_id, GetButtonByID(new_id)));
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
 }
 
 // Check that 2nd drag from the other pointer would be ignored.
 TEST_F(ShelfViewTest, SimultaneousDrag) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
+  ShelfButtonHost* button_host = shelf_view_;
 
   std::vector<std::pair<ShelfID, views::View*> > id_map;
   SetupForDragTest(&id_map);
 
   // Start a mouse drag.
-  views::View* dragged_button_mouse = SimulateDrag(
-      internal::ShelfButtonHost::MOUSE, 1, 3);
+  views::View* dragged_button_mouse =
+      SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   std::rotate(id_map.begin() + 1,
               id_map.begin() + 2,
               id_map.begin() + 4);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
   // Attempt a touch drag before the mouse drag finishes.
-  views::View* dragged_button_touch = SimulateDrag(
-      internal::ShelfButtonHost::TOUCH, 4, 2);
+  views::View* dragged_button_touch =
+      SimulateDrag(ShelfButtonHost::TOUCH, 4, 2);
 
   // Nothing changes since 2nd drag is ignored.
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Finish the mouse drag.
-  button_host->PointerReleasedOnButton(dragged_button_mouse,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button_mouse, ShelfButtonHost::MOUSE, false);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // Now start a touch drag.
-  dragged_button_touch = SimulateDrag(internal::ShelfButtonHost::TOUCH, 4, 2);
+  dragged_button_touch = SimulateDrag(ShelfButtonHost::TOUCH, 4, 2);
   std::rotate(id_map.begin() + 3,
               id_map.begin() + 4,
               id_map.begin() + 5);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
   // And attempt a mouse drag before the touch drag finishes.
-  dragged_button_mouse = SimulateDrag(internal::ShelfButtonHost::MOUSE, 1, 2);
+  dragged_button_mouse = SimulateDrag(ShelfButtonHost::MOUSE, 1, 2);
 
   // Nothing changes since 2nd drag is ignored.
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 
-  button_host->PointerReleasedOnButton(dragged_button_touch,
-                                       internal::ShelfButtonHost::TOUCH,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button_touch, ShelfButtonHost::TOUCH, false);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
 }
 
 // Check that clicking first on one item and then dragging another works as
 // expected.
 TEST_F(ShelfViewTest, ClickOneDragAnother) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
+  ShelfButtonHost* button_host = shelf_view_;
 
   std::vector<std::pair<ShelfID, views::View*> > id_map;
   SetupForDragTest(&id_map);
 
   // A click on item 1 is simulated.
-  SimulateClick(internal::ShelfButtonHost::MOUSE, 1);
+  SimulateClick(ShelfButtonHost::MOUSE, 1);
 
   // Dragging browser index at 0 should change the model order correctly.
   EXPECT_TRUE(model_->items()[1].type == TYPE_BROWSER_SHORTCUT);
-  views::View* dragged_button = SimulateDrag(
-      internal::ShelfButtonHost::MOUSE, 1, 3);
+  views::View* dragged_button = SimulateDrag(ShelfButtonHost::MOUSE, 1, 3);
   std::rotate(id_map.begin() + 1,
               id_map.begin() + 2,
               id_map.begin() + 4);
   ASSERT_NO_FATAL_FAILURE(CheckModelIDs(id_map));
-  button_host->PointerReleasedOnButton(dragged_button,
-                                       internal::ShelfButtonHost::MOUSE,
-                                       false);
+  button_host->PointerReleasedOnButton(
+      dragged_button, ShelfButtonHost::MOUSE, false);
   EXPECT_TRUE(model_->items()[3].type == TYPE_BROWSER_SHORTCUT);
 }
 
@@ -1169,14 +1149,14 @@ TEST_F(ShelfViewTest, ShelfItemStatus) {
   ShelfID last_added = AddPlatformApp();
   ShelfItem item = GetItemByID(last_added);
   int index = model_->ItemIndexByID(last_added);
-  internal::ShelfButton* button = GetButtonByID(last_added);
-  ASSERT_EQ(internal::ShelfButton::STATE_RUNNING, button->state());
+  ShelfButton* button = GetButtonByID(last_added);
+  ASSERT_EQ(ShelfButton::STATE_RUNNING, button->state());
   item.status = STATUS_ACTIVE;
   model_->Set(index, item);
-  ASSERT_EQ(internal::ShelfButton::STATE_ACTIVE, button->state());
+  ASSERT_EQ(ShelfButton::STATE_ACTIVE, button->state());
   item.status = STATUS_ATTENTION;
   model_->Set(index, item);
-  ASSERT_EQ(internal::ShelfButton::STATE_ATTENTION, button->state());
+  ASSERT_EQ(ShelfButton::STATE_ATTENTION, button->state());
 }
 
 TEST_F(ShelfViewLegacyShelfLayoutTest,
@@ -1188,17 +1168,13 @@ TEST_F(ShelfViewLegacyShelfLayoutTest,
   // Add 2 items to the shelf.
   ShelfID item1_id = AddPlatformApp();
   ShelfID item2_id = AddPlatformAppNoWait();
-  internal::ShelfButton* item1_button = GetButtonByID(item1_id);
-  internal::ShelfButton* item2_button = GetButtonByID(item2_id);
-
-  internal::ShelfButton::State state_mask =
-      static_cast<internal::ShelfButton::State>(
-          internal::ShelfButton::STATE_NORMAL |
-          internal::ShelfButton::STATE_HOVERED |
-          internal::ShelfButton::STATE_RUNNING |
-          internal::ShelfButton::STATE_ACTIVE |
-          internal::ShelfButton::STATE_ATTENTION |
-          internal::ShelfButton::STATE_FOCUSED);
+  ShelfButton* item1_button = GetButtonByID(item1_id);
+  ShelfButton* item2_button = GetButtonByID(item2_id);
+
+  ShelfButton::State state_mask = static_cast<ShelfButton::State>(
+      ShelfButton::STATE_NORMAL | ShelfButton::STATE_HOVERED |
+      ShelfButton::STATE_RUNNING | ShelfButton::STATE_ACTIVE |
+      ShelfButton::STATE_ATTENTION | ShelfButton::STATE_FOCUSED);
 
   // Clear the button states.
   item1_button->ClearState(state_mask);
@@ -1207,10 +1183,10 @@ TEST_F(ShelfViewLegacyShelfLayoutTest,
   // Since default alignment in tests is bottom, state is reflected in y-axis.
   ASSERT_EQ(item1_button->GetIconBounds().y(),
             item2_button->GetIconBounds().y());
-  item1_button->AddState(internal::ShelfButton::STATE_HOVERED);
+  item1_button->AddState(ShelfButton::STATE_HOVERED);
   ASSERT_NE(item1_button->GetIconBounds().y(),
             item2_button->GetIconBounds().y());
-  item1_button->ClearState(internal::ShelfButton::STATE_HOVERED);
+  item1_button->ClearState(ShelfButton::STATE_HOVERED);
 }
 
 // Confirm that item status changes are reflected in the buttons
@@ -1224,14 +1200,14 @@ TEST_F(ShelfViewTest, ShelfItemStatusPlatformApp) {
   ShelfID last_added = AddPlatformApp();
   ShelfItem item = GetItemByID(last_added);
   int index = model_->ItemIndexByID(last_added);
-  internal::ShelfButton* button = GetButtonByID(last_added);
-  ASSERT_EQ(internal::ShelfButton::STATE_RUNNING, button->state());
+  ShelfButton* button = GetButtonByID(last_added);
+  ASSERT_EQ(ShelfButton::STATE_RUNNING, button->state());
   item.status = STATUS_ACTIVE;
   model_->Set(index, item);
-  ASSERT_EQ(internal::ShelfButton::STATE_ACTIVE, button->state());
+  ASSERT_EQ(ShelfButton::STATE_ACTIVE, button->state());
   item.status = STATUS_ATTENTION;
   model_->Set(index, item);
-  ASSERT_EQ(internal::ShelfButton::STATE_ATTENTION, button->state());
+  ASSERT_EQ(ShelfButton::STATE_ATTENTION, button->state());
 }
 
 // Confirm that shelf item bounds are correctly updated on shelf changes.
@@ -1255,12 +1231,11 @@ TEST_F(ShelfViewTest, ShelfTooltipTest) {
   ShelfID app_button_id = AddAppShortcut();
   ShelfID platform_button_id = AddPlatformApp();
 
-  internal::ShelfButton* app_button = GetButtonByID(app_button_id);
-  internal::ShelfButton* platform_button = GetButtonByID(platform_button_id);
+  ShelfButton* app_button = GetButtonByID(app_button_id);
+  ShelfButton* platform_button = GetButtonByID(platform_button_id);
 
-  internal::ShelfButtonHost* button_host = shelf_view_;
-  internal::ShelfTooltipManager* tooltip_manager =
-      shelf_view_->tooltip_manager();
+  ShelfButtonHost* button_host = shelf_view_;
+  ShelfTooltipManager* tooltip_manager = shelf_view_->tooltip_manager();
 
   button_host->MouseEnteredButton(app_button);
   // There's a delay to show the tooltip, so it's not visible yet.
@@ -1296,13 +1271,12 @@ TEST_F(ShelfViewTest, ShelfTooltipTest) {
 // Verify a fix for crash caused by a tooltip update for a deletedshelf
 // button, see crbug.com/288838.
 TEST_F(ShelfViewTest, RemovingItemClosesTooltip) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
-  internal::ShelfTooltipManager* tooltip_manager =
-      shelf_view_->tooltip_manager();
+  ShelfButtonHost* button_host = shelf_view_;
+  ShelfTooltipManager* tooltip_manager = shelf_view_->tooltip_manager();
 
   // Add an item to the shelf.
   ShelfID app_button_id = AddAppShortcut();
-  internal::ShelfButton* app_button = GetButtonByID(app_button_id);
+  ShelfButton* app_button = GetButtonByID(app_button_id);
 
   // Spawn a tooltip on that item.
   button_host->MouseEnteredButton(app_button);
@@ -1321,13 +1295,12 @@ TEST_F(ShelfViewTest, RemovingItemClosesTooltip) {
 
 // Changing the shelf alignment closes any open tooltip.
 TEST_F(ShelfViewTest, ShelfAlignmentClosesTooltip) {
-  internal::ShelfButtonHost* button_host = shelf_view_;
-  internal::ShelfTooltipManager* tooltip_manager =
-      shelf_view_->tooltip_manager();
+  ShelfButtonHost* button_host = shelf_view_;
+  ShelfTooltipManager* tooltip_manager = shelf_view_->tooltip_manager();
 
   // Add an item to the shelf.
   ShelfID app_button_id = AddAppShortcut();
-  internal::ShelfButton* app_button = GetButtonByID(app_button_id);
+  ShelfButton* app_button = GetButtonByID(app_button_id);
 
   // Spawn a tooltip on the item.
   button_host->MouseEnteredButton(app_button);
@@ -1346,7 +1319,7 @@ TEST_F(ShelfViewTest, ShouldHideTooltipTest) {
 
   // The tooltip shouldn't hide if the mouse is on normal buttons.
   for (int i = 0; i < test_api_->GetButtonCount(); i++) {
-    internal::ShelfButton* button = test_api_->GetButton(i);
+    ShelfButton* button = test_api_->GetButton(i);
     if (!button)
       continue;
 
@@ -1371,7 +1344,7 @@ TEST_F(ShelfViewTest, ShouldHideTooltipTest) {
   // The tooltip should hide if it's outside of all buttons.
   gfx::Rect all_area;
   for (int i = 0; i < test_api_->GetButtonCount(); i++) {
-    internal::ShelfButton* button = test_api_->GetButton(i);
+    ShelfButton* button = test_api_->GetButton(i);
     if (!button)
       continue;
 
@@ -1397,7 +1370,7 @@ TEST_F(ShelfViewTest, ShouldHideTooltipWithAppListWindowTest) {
 
   // The tooltip shouldn't hide if the mouse is on normal buttons.
   for (int i = 1; i < test_api_->GetButtonCount(); i++) {
-    internal::ShelfButton* button = test_api_->GetButton(i);
+    ShelfButton* button = test_api_->GetButton(i);
     if (!button)
       continue;
 
@@ -1415,8 +1388,7 @@ TEST_F(ShelfViewTest, ShouldHideTooltipWithAppListWindowTest) {
 // Test that by moving the mouse cursor off the button onto the bubble it closes
 // the bubble.
 TEST_F(ShelfViewTest, ShouldHideTooltipWhenHoveringOnTooltip) {
-  internal::ShelfTooltipManager* tooltip_manager =
-      shelf_view_->tooltip_manager();
+  ShelfTooltipManager* tooltip_manager = shelf_view_->tooltip_manager();
   tooltip_manager->CreateZeroDelayTimerForTest();
   aura::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 
@@ -1512,8 +1484,7 @@ TEST_F(ShelfViewTest, OverflowBubbleSize) {
 
   aura::test::EventGenerator generator(Shell::GetPrimaryRootWindow(),
                                        gfx::Point());
-  internal::ShelfButton* button =
-      test_for_overflow_view.GetButton(ripped_index);
+  ShelfButton* button = test_for_overflow_view.GetButton(ripped_index);
   // Rip off the last visible item.
   gfx::Point start_point = button->GetBoundsInScreen().CenterPoint();
   gfx::Point rip_off_point(start_point.x(), 0);
@@ -1573,8 +1544,7 @@ TEST_F(ShelfViewTest, CheckDragInsertBoundsOfScrolledOverflowBubble) {
 
   int item_width = test_api_->GetButtonSize() +
       test_api_->GetButtonSpacing();
-  internal::OverflowBubbleView* bubble_view =
-      test_api_->overflow_bubble()->bubble_view();
+  OverflowBubbleView* bubble_view = test_api_->overflow_bubble()->bubble_view();
   test::OverflowBubbleViewTestAPI bubble_view_api(bubble_view);
 
   // Add more buttons until OverflowBubble is scrollable and it has 3 invisible
@@ -1591,10 +1561,8 @@ TEST_F(ShelfViewTest, CheckDragInsertBoundsOfScrolledOverflowBubble) {
   int first_index = test_for_overflow_view.GetFirstVisibleIndex();
   int last_index = test_for_overflow_view.GetLastVisibleIndex();
 
-  internal::ShelfButton* first_button =
-      test_for_overflow_view.GetButton(first_index);
-  internal::ShelfButton* last_button =
-      test_for_overflow_view.GetButton(last_index);
+  ShelfButton* first_button = test_for_overflow_view.GetButton(first_index);
+  ShelfButton* last_button = test_for_overflow_view.GetButton(last_index);
   gfx::Point first_point = first_button->GetBoundsInScreen().CenterPoint();
   gfx::Point last_point = last_button->GetBoundsInScreen().CenterPoint();
   gfx::Rect drag_reinsert_bounds =
@@ -1620,12 +1588,12 @@ TEST_F(ShelfViewTest, CheckDragInsertBoundsWithMultiMonitor) {
 
   UpdateDisplay("800x600,800x600");
   Shelf* secondary_shelf = Shelf::ForWindow(Shell::GetAllRootWindows()[1]);
-  internal::ShelfView* shelf_view_for_secondary =
+  ShelfView* shelf_view_for_secondary =
       ShelfTestAPI(secondary_shelf).shelf_view();
 
   // The bounds should be big enough for 4 buttons + overflow chevron.
-  shelf_view_for_secondary->SetBounds(0, 0, 500,
-      internal::ShelfLayoutManager::GetPreferredShelfSize());
+  shelf_view_for_secondary->SetBounds(
+      0, 0, 500, ShelfLayoutManager::GetPreferredShelfSize());
 
   ShelfViewTestAPI test_api_for_secondary(shelf_view_for_secondary);
   // Speeds up animation for test.
@@ -1642,7 +1610,7 @@ TEST_F(ShelfViewTest, CheckDragInsertBoundsWithMultiMonitor) {
   ShelfViewTestAPI test_api_for_overflow_view(
       test_api_->overflow_bubble()->shelf_view());
 
-  internal::ShelfButton* button = test_api_for_overflow_view.GetButton(
+  ShelfButton* button = test_api_for_overflow_view.GetButton(
       test_api_for_overflow_view.GetLastVisibleIndex());
 
   // Checks that a point in shelf is contained in drag insert bounds.
@@ -1663,7 +1631,7 @@ TEST_F(ShelfViewTest, CheckDragInsertBoundsWithMultiMonitor) {
   ShelfViewTestAPI test_api_for_overflow_view_of_secondary(
       test_api_for_secondary.overflow_bubble()->shelf_view());
 
-  internal::ShelfButton* button_in_secondary =
+  ShelfButton* button_in_secondary =
       test_api_for_overflow_view_of_secondary.GetButton(
           test_api_for_overflow_view_of_secondary.GetLastVisibleIndex());
 
@@ -1703,12 +1671,12 @@ TEST_F(ShelfViewTest, CheckRipOffFromLeftShelfAlignmentWithMultiMonitor) {
   EXPECT_GT(browser_index, 0);
 
   Shelf* secondary_shelf = Shelf::ForWindow(second_root);
-  internal::ShelfView* shelf_view_for_secondary =
+  ShelfView* shelf_view_for_secondary =
       ShelfTestAPI(secondary_shelf).shelf_view();
 
   ShelfViewTestAPI test_api_for_secondary_shelf_view(shelf_view_for_secondary);
-  internal::ShelfButton* button =
-    test_api_for_secondary_shelf_view.GetButton(browser_index);
+  ShelfButton* button =
+      test_api_for_secondary_shelf_view.GetButton(browser_index);
 
   // Fetch the start point of dragging.
   gfx::Point start_point = button->GetBoundsInScreen().CenterPoint();
@@ -1744,7 +1712,7 @@ class ShelfViewVisibleBoundsTest : public ShelfViewTest,
     gfx::Rect shelf_bounds = shelf_view_->GetBoundsInScreen();
     EXPECT_TRUE(shelf_bounds.Contains(visible_bounds));
     for (int i = 0; i < test_api_->GetButtonCount(); ++i)
-      if (internal::ShelfButton* button = test_api_->GetButton(i))
+      if (ShelfButton* button = test_api_->GetButton(i))
         EXPECT_TRUE(visible_bounds.Contains(button->GetBoundsInScreen()));
     CheckAppListButtonIsInBounds();
   }
diff --git a/ash/shelf/shelf_widget.cc b/ash/shelf/shelf_widget.cc
index f3f1f29..68ab0ba 100644
--- a/ash/shelf/shelf_widget.cc
+++ b/ash/shelf/shelf_widget.cc
@@ -52,7 +52,7 @@ const int kTimeToUnDimMs = 200;  // Fast in activating.
 // Class used to slightly dim shelf items when maximized and visible.
 class DimmerView : public views::View,
                    public views::WidgetDelegate,
-                   ash::internal::BackgroundAnimatorDelegate {
+                   ash::BackgroundAnimatorDelegate {
  public:
   // If |disable_dimming_animations_for_test| is set, all alpha animations will
   // be performed instantly.
@@ -74,7 +74,7 @@ class DimmerView : public views::View,
     return View::GetWidget();
   }
 
-  // ash::internal::BackgroundAnimatorDelegate overrides:
+  // ash::BackgroundAnimatorDelegate overrides:
   virtual void UpdateBackground(int alpha) OVERRIDE {
     alpha_ = alpha;
     SchedulePaint();
@@ -126,7 +126,7 @@ class DimmerView : public views::View,
   bool disable_dimming_animations_for_test_;
 
   // The animator for the background transitions.
-  ash::internal::BackgroundAnimator background_animator_;
+  ash::BackgroundAnimator background_animator_;
 
   // Notification of entering / exiting of the shelf area by mouse.
   scoped_ptr<DimmerEventFilter> event_filter_;
@@ -234,7 +234,7 @@ void DimmerView::DimmerEventFilter::OnTouchEvent(ui::TouchEvent* event) {
   touch_inside_ = touch_inside;
 }
 
-using ash::internal::ShelfLayoutManager;
+using ash::ShelfLayoutManager;
 
 // ShelfWindowTargeter makes it easier to resize windows with the mouse when the
 // window-edge slightly overlaps with the shelf edge. The targeter also makes it
@@ -313,18 +313,16 @@ namespace ash {
 // sizes it to the width of the shelf minus the size of the status area.
 class ShelfWidget::DelegateView : public views::WidgetDelegate,
                                   public views::AccessiblePaneView,
-                                  public internal::BackgroundAnimatorDelegate,
+                                  public BackgroundAnimatorDelegate,
                                   public aura::WindowObserver {
  public:
   explicit DelegateView(ShelfWidget* shelf);
   virtual ~DelegateView();
 
-  void set_focus_cycler(internal::FocusCycler* focus_cycler) {
+  void set_focus_cycler(FocusCycler* focus_cycler) {
     focus_cycler_ = focus_cycler;
   }
-  internal::FocusCycler* focus_cycler() {
-    return focus_cycler_;
-  }
+  FocusCycler* focus_cycler() { return focus_cycler_; }
 
   ui::Layer* opaque_background() { return &opaque_background_; }
 
@@ -383,7 +381,7 @@ class ShelfWidget::DelegateView : public views::WidgetDelegate,
  private:
   ShelfWidget* shelf_;
   scoped_ptr<views::Widget> dimmer_;
-  internal::FocusCycler* focus_cycler_;
+  FocusCycler* focus_cycler_;
   int alpha_;
   ui::Layer opaque_background_;
 
@@ -601,7 +599,7 @@ void ShelfWidget::DelegateView::UpdateBackground(int alpha) {
 
 ShelfWidget::ShelfWidget(aura::Window* shelf_container,
                          aura::Window* status_container,
-                         internal::WorkspaceController* workspace_controller)
+                         WorkspaceController* workspace_controller)
     : delegate_view_(new DelegateView(this)),
       background_animator_(delegate_view_, 0, kShelfBackgroundAlpha),
       activating_as_fallback_(false),
@@ -619,7 +617,7 @@ ShelfWidget::ShelfWidget(aura::Window* shelf_container,
   SetContentsView(delegate_view_);
   delegate_view_->SetParentLayer(GetLayer());
 
-  status_area_widget_ = new internal::StatusAreaWidget(status_container);
+  status_area_widget_ = new StatusAreaWidget(status_container);
   status_area_widget_->CreateTrayViews();
   if (Shell::GetInstance()->session_state_delegate()->
           IsActiveUserSessionStarted()) {
@@ -627,14 +625,13 @@ ShelfWidget::ShelfWidget(aura::Window* shelf_container,
   }
   Shell::GetInstance()->focus_cycler()->AddWidget(status_area_widget_);
 
-  shelf_layout_manager_ = new internal::ShelfLayoutManager(this);
+  shelf_layout_manager_ = new ShelfLayoutManager(this);
   shelf_layout_manager_->AddObserver(this);
   shelf_container->SetLayoutManager(shelf_layout_manager_);
   shelf_layout_manager_->set_workspace_controller(workspace_controller);
   workspace_controller->SetShelf(shelf_layout_manager_);
 
-  status_container->SetLayoutManager(
-      new internal::StatusAreaLayoutManager(this));
+  status_container->SetLayoutManager(new StatusAreaLayoutManager(this));
 
   shelf_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(new
       ShelfWindowTargeter(shelf_container, shelf_layout_manager_)));
@@ -743,8 +740,7 @@ void ShelfWidget::CreateShelf() {
   SetFocusCycler(shell->focus_cycler());
 
   // Inform the root window controller.
-  internal::RootWindowController::ForWindow(window_container_)
-      ->OnShelfCreated();
+  RootWindowController::ForWindow(window_container_)->OnShelfCreated();
 
   shelf_->SetVisible(
       shell->session_state_delegate()->IsActiveUserSessionStarted());
@@ -761,13 +757,13 @@ void ShelfWidget::SetShelfVisibility(bool visible) {
     shelf_->SetVisible(visible);
 }
 
-void ShelfWidget::SetFocusCycler(internal::FocusCycler* focus_cycler) {
+void ShelfWidget::SetFocusCycler(FocusCycler* focus_cycler) {
   delegate_view_->set_focus_cycler(focus_cycler);
   if (focus_cycler)
     focus_cycler->AddWidget(this);
 }
 
-internal::FocusCycler* ShelfWidget::GetFocusCycler() {
+FocusCycler* ShelfWidget::GetFocusCycler() {
   return delegate_view_->focus_cycler();
 }
 
diff --git a/ash/shelf/shelf_widget.h b/ash/shelf/shelf_widget.h
index d2ff8b4..8a2ccc6 100644
--- a/ash/shelf/shelf_widget.h
+++ b/ash/shelf/shelf_widget.h
@@ -17,23 +17,19 @@ class Window;
 }
 
 namespace ash {
-class Shelf;
-
-namespace internal {
 class FocusCycler;
-class StatusAreaWidget;
+class Shelf;
 class ShelfLayoutManager;
+class StatusAreaWidget;
 class WorkspaceController;
-}
 
 class ASH_EXPORT ShelfWidget : public views::Widget,
                                public views::WidgetObserver,
                                public ShelfLayoutManagerObserver {
  public:
-  ShelfWidget(
-      aura::Window* shelf_container,
-      aura::Window* status_container,
-      internal::WorkspaceController* workspace_controller);
+  ShelfWidget(aura::Window* shelf_container,
+              aura::Window* status_container,
+              WorkspaceController* workspace_controller);
   virtual ~ShelfWidget();
 
   // Returns if shelf alignment option is enabled, and the user is able
@@ -53,13 +49,9 @@ class ASH_EXPORT ShelfWidget : public views::Widget,
   void SetDimsShelf(bool dimming);
   bool GetDimsShelf() const;
 
-  internal::ShelfLayoutManager* shelf_layout_manager() {
-    return shelf_layout_manager_;
-  }
+  ShelfLayoutManager* shelf_layout_manager() { return shelf_layout_manager_; }
   Shelf* shelf() const { return shelf_.get(); }
-  internal::StatusAreaWidget* status_area_widget() const {
-    return status_area_widget_;
-  }
+  StatusAreaWidget* status_area_widget() const { return status_area_widget_; }
 
   void CreateShelf();
 
@@ -68,8 +60,8 @@ class ASH_EXPORT ShelfWidget : public views::Widget,
   bool IsShelfVisible() const;
 
   // Sets the focus cycler.  Also adds the shelf to the cycle.
-  void SetFocusCycler(internal::FocusCycler* focus_cycler);
-  internal::FocusCycler* GetFocusCycler();
+  void SetFocusCycler(FocusCycler* focus_cycler);
+  FocusCycler* GetFocusCycler();
 
   // Called by the activation delegate, before the shelf is activated
   // when no other windows are visible.
@@ -104,14 +96,14 @@ class ASH_EXPORT ShelfWidget : public views::Widget,
  private:
   class DelegateView;
 
-  internal::ShelfLayoutManager* shelf_layout_manager_;
+  ShelfLayoutManager* shelf_layout_manager_;
   scoped_ptr<Shelf> shelf_;
-  internal::StatusAreaWidget* status_area_widget_;
+  StatusAreaWidget* status_area_widget_;
 
   // delegate_view_ is attached to window_container_ and is cleaned up
   // during CloseChildWindows of the associated RootWindowController.
   DelegateView* delegate_view_;
-  internal::BackgroundAnimator background_animator_;
+  BackgroundAnimator background_animator_;
   bool activating_as_fallback_;
   aura::Window* window_container_;
 };
diff --git a/ash/shelf/shelf_widget_unittest.cc b/ash/shelf/shelf_widget_unittest.cc
index 873cb35..770bd7e 100644
--- a/ash/shelf/shelf_widget_unittest.cc
+++ b/ash/shelf/shelf_widget_unittest.cc
@@ -30,7 +30,7 @@ ShelfWidget* GetShelfWidget() {
   return Shelf::ForPrimaryDisplay()->shelf_widget();
 }
 
-internal::ShelfLayoutManager* GetShelfLayoutManager() {
+ShelfLayoutManager* GetShelfLayoutManager() {
   return GetShelfWidget()->shelf_layout_manager();
 }
 
@@ -117,7 +117,7 @@ TEST_F(ShelfWidgetTest, LauncherInitiallySized) {
   ShelfWidget* shelf_widget = GetShelfWidget();
   Shelf* shelf = shelf_widget->shelf();
   ASSERT_TRUE(shelf);
-  internal::ShelfLayoutManager* shelf_layout_manager = GetShelfLayoutManager();
+  ShelfLayoutManager* shelf_layout_manager = GetShelfLayoutManager();
   ASSERT_TRUE(shelf_layout_manager);
   ASSERT_TRUE(shelf_widget->status_area_widget());
   int status_width = shelf_widget->status_area_widget()->
@@ -181,7 +181,7 @@ TEST_F(ShelfWidgetTest, ShelfEdgeOverlappingWindowHitTestMouse) {
   ShelfWidget* shelf_widget = GetShelfWidget();
   gfx::Rect shelf_bounds = shelf_widget->GetWindowBoundsInScreen();
   EXPECT_TRUE(!shelf_bounds.IsEmpty());
-  internal::ShelfLayoutManager* shelf_layout_manager =
+  ShelfLayoutManager* shelf_layout_manager =
       shelf_widget->shelf_layout_manager();
   ASSERT_TRUE(shelf_layout_manager);
   EXPECT_EQ(SHELF_VISIBLE, shelf_layout_manager->visibility_state());
@@ -244,7 +244,7 @@ TEST_F(ShelfWidgetTest, HiddenShelfHitTestTouch) {
   ShelfWidget* shelf_widget = GetShelfWidget();
   gfx::Rect shelf_bounds = shelf_widget->GetWindowBoundsInScreen();
   EXPECT_TRUE(!shelf_bounds.IsEmpty());
-  internal::ShelfLayoutManager* shelf_layout_manager =
+  ShelfLayoutManager* shelf_layout_manager =
       shelf_widget->shelf_layout_manager();
   ASSERT_TRUE(shelf_layout_manager);
   EXPECT_EQ(SHELF_VISIBLE, shelf_layout_manager->visibility_state());
diff --git a/ash/shelf/shelf_window_watcher.cc b/ash/shelf/shelf_window_watcher.cc
index 9488d10..b16deea 100644
--- a/ash/shelf/shelf_window_watcher.cc
+++ b/ash/shelf/shelf_window_watcher.cc
@@ -50,7 +50,6 @@ bool IsDragging(aura::Window* window) {
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 ShelfWindowWatcher::RootWindowObserver::RootWindowObserver(
     ShelfWindowWatcher* window_watcher)
@@ -289,5 +288,4 @@ void ShelfWindowWatcher::OnDisplayRemoved(const gfx::Display& old_display) {
   // Do nothing here.
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_window_watcher.h b/ash/shelf/shelf_window_watcher.h
index ba42756..cb99bc7 100644
--- a/ash/shelf/shelf_window_watcher.h
+++ b/ash/shelf/shelf_window_watcher.h
@@ -29,7 +29,6 @@ namespace ash {
 class ShelfModel;
 class ShelfItemDelegateManager;
 
-namespace internal {
 // ShelfWindowWatcher creates and handles a ShelfItem for windows that have
 // a ShelfItemDetails property in the default container.
 class ShelfWindowWatcher : public aura::client::ActivationChangeObserver,
@@ -144,7 +143,6 @@ class ShelfWindowWatcher : public aura::client::ActivationChangeObserver,
   DISALLOW_COPY_AND_ASSIGN(ShelfWindowWatcher);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_WINDOW_WATCHER_H_
diff --git a/ash/shelf/shelf_window_watcher_item_delegate.cc b/ash/shelf/shelf_window_watcher_item_delegate.cc
index e1ce8ec..005d2d4 100644
--- a/ash/shelf/shelf_window_watcher_item_delegate.cc
+++ b/ash/shelf/shelf_window_watcher_item_delegate.cc
@@ -14,7 +14,6 @@
 #include "ui/wm/core/window_animations.h"
 
 namespace ash {
-namespace internal {
 
 ShelfWindowWatcherItemDelegate::ShelfWindowWatcherItemDelegate(
     aura::Window* window, ShelfModel* model)
@@ -69,5 +68,4 @@ bool ShelfWindowWatcherItemDelegate::ShouldShowTooltip() {
   return true;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shelf/shelf_window_watcher_item_delegate.h b/ash/shelf/shelf_window_watcher_item_delegate.h
index 7a40f63..9de8f6f 100644
--- a/ash/shelf/shelf_window_watcher_item_delegate.h
+++ b/ash/shelf/shelf_window_watcher_item_delegate.h
@@ -14,11 +14,8 @@ class Window;
 }
 
 namespace ash {
-
 class ShelfModel;
 
-namespace internal {
-
 // ShelfItemDelegate for the items created by ShelfWindowWatcher.
 class ShelfWindowWatcherItemDelegate : public ShelfItemDelegate {
  public:
@@ -45,7 +42,6 @@ class ShelfWindowWatcherItemDelegate : public ShelfItemDelegate {
   DISALLOW_COPY_AND_ASSIGN(ShelfWindowWatcherItemDelegate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_WINDOW_WATCHER_ITEM_DELEGATE_H_
diff --git a/ash/shelf/shelf_window_watcher_unittest.cc b/ash/shelf/shelf_window_watcher_unittest.cc
index f4ba99d..588db3b 100644
--- a/ash/shelf/shelf_window_watcher_unittest.cc
+++ b/ash/shelf/shelf_window_watcher_unittest.cc
@@ -21,7 +21,6 @@
 #include "ui/base/hit_test.h"
 
 namespace ash {
-namespace internal {
 
 class ShelfWindowWatcherTest : public test::AshTestBase {
  public:
@@ -286,5 +285,4 @@ TEST_F(ShelfWindowWatcherTest, ReparentWindowDuringTheDragging) {
   EXPECT_EQ(1, model_->item_count());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/shell.cc b/ash/shell.cc
index d770314..f449d3e 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -197,8 +197,8 @@ void Shell::DeleteInstance() {
 }
 
 // static
-internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
-  return internal::GetRootWindowController(GetPrimaryRootWindow());
+RootWindowController* Shell::GetPrimaryRootWindowController() {
+  return GetRootWindowController(GetPrimaryRootWindow());
 }
 
 // static
@@ -273,8 +273,8 @@ void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 
   aura::Window* root =
       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
-  internal::GetRootWindowController(root)->
-      ShowContextMenu(location_in_screen, source_type);
+  GetRootWindowController(root)
+      ->ShowContextMenu(location_in_screen, source_type);
 }
 
 void Shell::ToggleAppList(aura::Window* window) {
@@ -282,7 +282,7 @@ void Shell::ToggleAppList(aura::Window* window) {
   if (!window)
     window = GetTargetRootWindow();
   if (!app_list_controller_)
-    app_list_controller_.reset(new internal::AppListController);
+    app_list_controller_.reset(new AppListController);
   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 }
 
@@ -303,7 +303,7 @@ bool Shell::IsSystemModalWindowOpen() const {
   if (simulate_modal_window_open_for_testing_)
     return true;
   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
-      internal::kShellWindowId_SystemModalContainer, NULL);
+      kShellWindowId_SystemModalContainer, NULL);
   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
        cit != containers.end(); ++cit) {
     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
@@ -324,9 +324,8 @@ views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 }
 
 void Shell::RotateFocus(Direction direction) {
-  focus_cycler_->RotateFocus(
-      direction == FORWARD ? internal::FocusCycler::FORWARD :
-                             internal::FocusCycler::BACKWARD);
+  focus_cycler_->RotateFocus(direction == FORWARD ? FocusCycler::FORWARD
+                                                  : FocusCycler::BACKWARD);
 }
 
 void Shell::SetDisplayWorkAreaInsets(Window* contains,
@@ -365,8 +364,7 @@ void Shell::OnLockStateChanged(bool locked) {
   // Make sure that there is no system modal in Lock layer when unlocked.
   if (!locked) {
     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
-        internal::kShellWindowId_LockSystemModalContainer,
-        GetPrimaryRootWindow());
+        kShellWindowId_LockSystemModalContainer, GetPrimaryRootWindow());
     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
          iter != containers.end(); ++iter) {
       DCHECK_EQ(0u, (*iter)->children().size());
@@ -446,8 +444,7 @@ void Shell::RemoveShellObserver(ShellObserver* observer) {
 
 void Shell::EnableMaximizeModeWindowManager(bool enable) {
   if (enable && !maximize_mode_window_manager_.get()) {
-    maximize_mode_window_manager_.reset(
-        new internal::MaximizeModeWindowManager());
+    maximize_mode_window_manager_.reset(new MaximizeModeWindowManager());
   } else if (!enable && maximize_mode_window_manager_.get()) {
     maximize_mode_window_manager_.reset();
   }
@@ -467,28 +464,26 @@ void Shell::UpdateShelfVisibility() {
 
 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
                                      aura::Window* root_window) {
-  ash::internal::ShelfLayoutManager::ForShelf(root_window)->
-      SetAutoHideBehavior(behavior);
+  ash::ShelfLayoutManager::ForShelf(root_window)->SetAutoHideBehavior(behavior);
 }
 
 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
     aura::Window* root_window) const {
-  return ash::internal::ShelfLayoutManager::ForShelf(root_window)->
-      auto_hide_behavior();
+  return ash::ShelfLayoutManager::ForShelf(root_window)->auto_hide_behavior();
 }
 
 void Shell::SetShelfAlignment(ShelfAlignment alignment,
                               aura::Window* root_window) {
-  if (ash::internal::ShelfLayoutManager::ForShelf(root_window)->
-      SetAlignment(alignment)) {
+  if (ash::ShelfLayoutManager::ForShelf(root_window)->SetAlignment(alignment)) {
     FOR_EACH_OBSERVER(
         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
   }
 }
 
 ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
-  return internal::GetRootWindowController(root_window)->
-      GetShelfLayoutManager()->GetAlignment();
+  return GetRootWindowController(root_window)
+      ->GetShelfLayoutManager()
+      ->GetAlignment();
 }
 
 void Shell::SetDimming(bool should_dim) {
@@ -506,7 +501,7 @@ void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
 
 void Shell::CreateModalBackground(aura::Window* window) {
   if (!modality_filter_) {
-    modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
+    modality_filter_.reset(new SystemModalContainerEventFilter(this));
     AddPreTargetHandler(modality_filter_.get());
   }
   RootWindowControllerList controllers = GetAllRootWindowControllers();
@@ -554,8 +549,7 @@ ShelfDelegate* Shell::GetShelfDelegate() {
         new ShelfItemDelegateManager(shelf_model_.get()));
 
     shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
-    scoped_ptr<ShelfItemDelegate> controller(
-        new internal::AppListShelfItemDelegate);
+    scoped_ptr<ShelfItemDelegate> controller(new AppListShelfItemDelegate);
 
     // Finding the shelf model's location of the app list and setting its
     // ShelfItemDelegate.
@@ -565,9 +559,8 @@ ShelfDelegate* Shell::GetShelfDelegate() {
     DCHECK(app_list_id);
     shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
                                                        controller.Pass());
-    shelf_window_watcher_.reset(new internal::ShelfWindowWatcher(
-                                        shelf_model_.get(),
-                                        shelf_item_delegate_manager_.get()));
+    shelf_window_watcher_.reset(new ShelfWindowWatcher(
+        shelf_model_.get(), shelf_item_delegate_manager_.get()));
   }
   return shelf_delegate_.get();
 }
@@ -618,14 +611,14 @@ Shell::Shell(ShellDelegate* delegate)
       is_touch_hud_projection_enabled_(false) {
   DCHECK(delegate_.get());
   gpu_support_.reset(delegate_->CreateGPUSupport());
-  display_manager_.reset(new internal::DisplayManager);
+  display_manager_.reset(new DisplayManager);
   display_controller_.reset(new DisplayController);
 #if defined(OS_CHROMEOS) && defined(USE_X11)
   user_metrics_recorder_.reset(new UserMetricsRecorder);
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_CHROMEOS)
-  internal::PowerStatus::Initialize();
+  PowerStatus::Initialize();
 #endif
 }
 
@@ -777,7 +770,7 @@ Shell::~Shell() {
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_CHROMEOS)
-  internal::PowerStatus::Shutdown();
+  PowerStatus::Shutdown();
 #endif
 
   DCHECK(instance_ == this);
@@ -787,25 +780,23 @@ Shell::~Shell() {
 void Shell::Init() {
   delegate_->PreInit();
   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
-    display_manager_->SetSecondDisplayMode(
-        internal::DisplayManager::VIRTUAL_KEYBOARD);
+    display_manager_->SetSecondDisplayMode(DisplayManager::VIRTUAL_KEYBOARD);
   }
   bool display_initialized = display_manager_->InitFromCommandLine();
 #if defined(OS_CHROMEOS)
   output_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
-  output_configurator_animation_.reset(
-      new internal::OutputConfiguratorAnimation());
+  output_configurator_animation_.reset(new OutputConfiguratorAnimation());
   output_configurator_->AddObserver(output_configurator_animation_.get());
 
-  projecting_observer_.reset(new internal::ProjectingObserver());
+  projecting_observer_.reset(new ProjectingObserver());
   output_configurator_->AddObserver(projecting_observer_.get());
 
   if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
-    display_change_observer_.reset(new internal::DisplayChangeObserver);
+    display_change_observer_.reset(new DisplayChangeObserver);
     // Register |display_change_observer_| first so that the rest of
     // observer gets invoked after the root windows are configured.
     output_configurator_->AddObserver(display_change_observer_.get());
-    display_error_observer_.reset(new internal::DisplayErrorObserver());
+    display_error_observer_.reset(new DisplayErrorObserver());
     output_configurator_->AddObserver(display_error_observer_.get());
     output_configurator_->set_state_controller(display_change_observer_.get());
     output_configurator_->set_mirroring_controller(display_manager_.get());
@@ -842,9 +833,9 @@ void Shell::Init() {
   focus_client_.reset(focus_controller);
   activation_client_ = focus_controller;
   activation_client_->AddObserver(this);
-  focus_cycler_.reset(new internal::FocusCycler());
+  focus_cycler_.reset(new FocusCycler());
 
-  screen_position_controller_.reset(new internal::ScreenPositionController);
+  screen_position_controller_.reset(new ScreenPositionController);
   window_tree_host_factory_.reset(delegate_->CreateWindowTreeHostFactory());
 
   display_controller_->Start();
@@ -854,7 +845,7 @@ void Shell::Init() {
 
 #if defined(OS_CHROMEOS)
   resolution_notification_controller_.reset(
-      new internal::ResolutionNotificationController);
+      new ResolutionNotificationController);
 #endif
 
   cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
@@ -883,7 +874,7 @@ void Shell::Init() {
   user_activity_detector_.reset(new ::wm::UserActivityDetector);
   AddPreTargetHandler(user_activity_detector_.get());
 
-  overlay_filter_.reset(new internal::OverlayEventFilter);
+  overlay_filter_.reset(new OverlayEventFilter);
   AddPreTargetHandler(overlay_filter_.get());
   AddShellObserver(overlay_filter_.get());
 
@@ -891,18 +882,18 @@ void Shell::Init() {
       root_window->GetHost()->GetAcceleratedWidget()));
   AddPreTargetHandler(input_method_filter_.get());
 
-  accelerator_filter_.reset(new internal::AcceleratorFilter);
+  accelerator_filter_.reset(new AcceleratorFilter);
   AddPreTargetHandler(accelerator_filter_.get());
 
-  event_transformation_handler_.reset(new internal::EventTransformationHandler);
+  event_transformation_handler_.reset(new EventTransformationHandler);
   AddPreTargetHandler(event_transformation_handler_.get());
 
   toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
 
-  system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
+  system_gesture_filter_.reset(new SystemGestureEventFilter);
   AddPreTargetHandler(system_gesture_filter_.get());
 
-  keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
+  keyboard_metrics_filter_.reset(new KeyboardUMAEventFilter);
   AddPreTargetHandler(keyboard_metrics_filter_.get());
 
   // The keyboard system must be initialized before the RootWindowController is
@@ -921,8 +912,8 @@ void Shell::Init() {
 #endif
   AddShellObserver(lock_state_controller_.get());
 
-  drag_drop_controller_.reset(new internal::DragDropController);
-  mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
+  drag_drop_controller_.reset(new DragDropController);
+  mouse_cursor_filter_.reset(new MouseCursorEventFilter());
   PrependPreTargetHandler(mouse_cursor_filter_.get());
 
   // Create Controllers that may need root window.
@@ -949,7 +940,7 @@ void Shell::Init() {
               new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
   AddPreTargetHandler(tooltip_controller_.get());
 
-  event_client_.reset(new internal::EventClientImpl);
+  event_client_.reset(new EventClientImpl);
 
   // This controller needs to be set before SetupManagedWindowMode.
   desktop_background_controller_.reset(new DesktopBackgroundController());
@@ -960,7 +951,7 @@ void Shell::Init() {
   new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
   media_delegate_.reset(delegate_->CreateMediaDelegate());
 
-  resize_shadow_controller_.reset(new internal::ResizeShadowController());
+  resize_shadow_controller_.reset(new ResizeShadowController());
   shadow_controller_.reset(
       new ::wm::ShadowController(activation_client_));
 
@@ -971,25 +962,22 @@ void Shell::Init() {
   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
   DCHECK(system_tray_delegate_.get());
 
-  locale_notification_controller_.reset(
-      new internal::LocaleNotificationController);
+  locale_notification_controller_.reset(new LocaleNotificationController);
 
   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
   system_tray_delegate_->Initialize();
 
 #if defined(OS_CHROMEOS)
   // Create the LogoutConfirmationController after the SystemTrayDelegate.
-  logout_confirmation_controller_.reset(
-      new internal::LogoutConfirmationController(
-          base::Bind(&SystemTrayDelegate::SignOut,
-                     base::Unretained(system_tray_delegate_.get()))));
+  logout_confirmation_controller_.reset(new LogoutConfirmationController(
+      base::Bind(&SystemTrayDelegate::SignOut,
+                 base::Unretained(system_tray_delegate_.get()))));
 #endif
 
   // TODO(oshima): Initialize all RootWindowControllers once, and
   // initialize controller/delegates above when initializing the
   // primary root window controller.
-  internal::RootWindowController::CreateForPrimaryDisplay(
-      root_window->GetHost());
+  RootWindowController::CreateForPrimaryDisplay(root_window->GetHost());
 
   display_controller_->InitSecondaryDisplays();
 
@@ -1010,26 +998,23 @@ void Shell::Init() {
       scoped_ptr<ash::BrightnessControlDelegate>(
           new ash::system::BrightnessControllerChromeos).Pass());
 
-  power_event_observer_.reset(new internal::PowerEventObserver());
+  power_event_observer_.reset(new PowerEventObserver());
   user_activity_notifier_.reset(
-      new internal::UserActivityNotifier(user_activity_detector_.get()));
+      new UserActivityNotifier(user_activity_detector_.get()));
   video_activity_notifier_.reset(
-      new internal::VideoActivityNotifier(video_detector_.get()));
-  bluetooth_notification_controller_.reset(
-      new internal::BluetoothNotificationController);
-  last_window_closed_logout_reminder_.reset(
-      new internal::LastWindowClosedLogoutReminder);
+      new VideoActivityNotifier(video_detector_.get()));
+  bluetooth_notification_controller_.reset(new BluetoothNotificationController);
+  last_window_closed_logout_reminder_.reset(new LastWindowClosedLogoutReminder);
 #endif
 
   weak_display_manager_factory_.reset(
-      new base::WeakPtrFactory<internal::DisplayManager>(
-          display_manager_.get()));
+      new base::WeakPtrFactory<DisplayManager>(display_manager_.get()));
   // The compositor thread and main message loop have to be running in
   // order to create mirror window. Run it after the main message loop
   // is started.
   base::MessageLoopForUI::current()->PostTask(
       FROM_HERE,
-      base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
+      base::Bind(&DisplayManager::CreateMirrorWindowIfAny,
                  weak_display_manager_factory_->GetWeakPtr()));
 }
 
@@ -1083,7 +1068,7 @@ bool Shell::CanWindowReceiveEvents(aura::Window* window) {
   RootWindowControllerList controllers = GetAllRootWindowControllers();
   for (RootWindowControllerList::iterator iter = controllers.begin();
        iter != controllers.end(); ++iter) {
-    internal::SystemModalContainerLayoutManager* layout_manager =
+    SystemModalContainerLayoutManager* layout_manager =
         (*iter)->GetSystemModalLayoutManager(window);
     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
       return true;
diff --git a/ash/shell.h b/ash/shell.h
index 20019ee..bc84e18 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -76,80 +76,78 @@ namespace ash {
 
 class AcceleratorController;
 class AccelerometerController;
+class AcceleratorFilter;
 class AccessibilityDelegate;
+class AppListController;
 class AshNativeCursorManager;
 class AutoclickController;
-class DesktopBackgroundController;
-class DisplayController;
-class FirstRunHelper;
-class GPUSupport;
-class HighContrastController;
-class LockStateController;
-class MagnificationController;
-class MediaDelegate;
-class MruWindowTracker;
-class NestedDispatcherController;
-class NewWindowDelegate;
-class PartialMagnificationController;
-class PowerButtonController;
-class WindowTreeHostFactory;
-class ScreenAsh;
-class SessionStateDelegate;
-class Shelf;
-class ShelfDelegate;
-class ShelfItemDelegateManager;
-class ShelfModel;
-class ShellDelegate;
-class ShellObserver;
-class StickyKeysController;
-class SystemTray;
-class SystemTrayDelegate;
-class SystemTrayNotifier;
-class ToplevelWindowEventHandler;
-class UserWallpaperDelegate;
-class VideoDetector;
-class WebNotificationTray;
-class WindowCycleController;
-class WindowPositioner;
-class WindowSelectorController;
-
-namespace internal {
-class AcceleratorFilter;
-class AppListController;
 class BluetoothNotificationController;
 class CaptureController;
+class DesktopBackgroundController;
 class DisplayChangeObserver;
+class DisplayController;
 class DisplayErrorObserver;
 class DisplayManager;
 class DragDropController;
 class EventClientImpl;
 class EventRewriterEventFilter;
 class EventTransformationHandler;
+class FirstRunHelper;
 class FocusCycler;
+class GPUSupport;
+class HighContrastController;
 class KeyboardUMAEventFilter;
 class LastWindowClosedLogoutReminder;
 class LocaleNotificationController;
+class LockStateController;
 class LogoutConfirmationController;
+class MagnificationController;
 class MaximizeModeWindowManager;
+class MediaDelegate;
 class MouseCursorEventFilter;
+class MruWindowTracker;
+class NestedDispatcherController;
+class NewWindowDelegate;
 class OutputConfiguratorAnimation;
 class OverlayEventFilter;
+class PartialMagnificationController;
+class PowerButtonController;
 class PowerEventObserver;
 class ProjectingObserver;
 class ResizeShadowController;
 class ResolutionNotificationController;
 class RootWindowController;
 class ScopedTargetRootWindow;
+class ScreenAsh;
 class ScreenPositionController;
+class SessionStateDelegate;
+class Shelf;
+class ShelfDelegate;
+class ShelfItemDelegateManager;
+class ShelfModel;
 class ShelfWindowWatcher;
+class ShellDelegate;
+class ShellObserver;
 class SlowAnimationEventFilter;
 class StatusAreaWidget;
+class StickyKeysController;
 class SystemGestureEventFilter;
 class SystemModalContainerEventFilter;
+class SystemTray;
+class SystemTrayDelegate;
+class SystemTrayNotifier;
+class ToplevelWindowEventHandler;
 class TouchObserverHUD;
+class UserActivityDetector;
 class UserActivityNotifier;
+class UserWallpaperDelegate;
 class VideoActivityNotifier;
-}
+class VideoDetector;
+class WebNotificationTray;
+class WindowCycleController;
+class WindowPositioner;
+class WindowSelectorController;
+class WindowTreeHostFactory;
 
 namespace shell {
 class WindowWatcher;
@@ -164,12 +162,11 @@ class ShellTestApi;
 //
 // Upon creation, the Shell sets itself as the RootWindow's delegate, which
 // takes ownership of the Shell.
-class ASH_EXPORT Shell
-    : public internal::SystemModalContainerEventFilterDelegate,
-      public ui::EventTarget,
-      public aura::client::ActivationChangeObserver {
+class ASH_EXPORT Shell : public SystemModalContainerEventFilterDelegate,
+                         public ui::EventTarget,
+                         public aura::client::ActivationChangeObserver {
  public:
-  typedef std::vector<internal::RootWindowController*> RootWindowControllerList;
+  typedef std::vector<RootWindowController*> RootWindowControllerList;
 
   enum Direction {
     FORWARD,
@@ -191,7 +188,7 @@ class ASH_EXPORT Shell
 
   // Returns the root window controller for the primary root window.
   // TODO(oshima): move this to |RootWindowController|
-  static internal::RootWindowController* GetPrimaryRootWindowController();
+  static RootWindowController* GetPrimaryRootWindowController();
 
   // Returns all root window controllers.
   // TODO(oshima): move this to |RootWindowController|
@@ -338,9 +335,7 @@ class ASH_EXPORT Shell
     return accelerator_controller_.get();
   }
 
-  internal::DisplayManager* display_manager() {
-    return display_manager_.get();
-  }
+  DisplayManager* display_manager() { return display_manager_.get(); }
   ::wm::InputMethodEventFilter* input_method_filter() {
     return input_method_filter_.get();
   }
@@ -350,9 +345,7 @@ class ASH_EXPORT Shell
   views::corewm::TooltipController* tooltip_controller() {
     return tooltip_controller_.get();
   }
-  internal::OverlayEventFilter* overlay_filter() {
-    return overlay_filter_.get();
-  }
+  OverlayEventFilter* overlay_filter() { return overlay_filter_.get(); }
   DesktopBackgroundController* desktop_background_controller() {
     return desktop_background_controller_.get();
   }
@@ -374,16 +367,14 @@ class ASH_EXPORT Shell
   WindowSelectorController* window_selector_controller() {
     return window_selector_controller_.get();
   }
-  internal::FocusCycler* focus_cycler() {
-    return focus_cycler_.get();
-  }
+  FocusCycler* focus_cycler() { return focus_cycler_.get(); }
   DisplayController* display_controller() {
     return display_controller_.get();
   }
-  internal::MouseCursorEventFilter* mouse_cursor_filter() {
+  MouseCursorEventFilter* mouse_cursor_filter() {
     return mouse_cursor_filter_.get();
   }
-  internal::EventTransformationHandler* event_transformation_handler() {
+  EventTransformationHandler* event_transformation_handler() {
     return event_transformation_handler_.get();
   }
   ::wm::CursorManager* cursor_manager() { return &cursor_manager_; }
@@ -489,7 +480,7 @@ class ASH_EXPORT Shell
     initially_hide_cursor_ = hide;
   }
 
-  internal::ResizeShadowController* resize_shadow_controller() {
+  ResizeShadowController* resize_shadow_controller() {
     return resize_shadow_controller_.get();
   }
 
@@ -510,19 +501,18 @@ class ASH_EXPORT Shell
   ui::OutputConfigurator* output_configurator() {
     return output_configurator_.get();
   }
-  internal::OutputConfiguratorAnimation* output_configurator_animation() {
+  OutputConfiguratorAnimation* output_configurator_animation() {
     return output_configurator_animation_.get();
   }
-  internal::DisplayErrorObserver* display_error_observer() {
+  DisplayErrorObserver* display_error_observer() {
     return display_error_observer_.get();
   }
 
-  internal::ResolutionNotificationController*
-      resolution_notification_controller() {
+  ResolutionNotificationController* resolution_notification_controller() {
     return resolution_notification_controller_.get();
   }
 
-  internal::LogoutConfirmationController* logout_confirmation_controller() {
+  LogoutConfirmationController* logout_confirmation_controller() {
     return logout_confirmation_controller_.get();
   }
 #endif  // defined(OS_CHROMEOS)
@@ -572,8 +562,8 @@ class ASH_EXPORT Shell
   FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, TestCursor);
   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, MouseEventCursors);
   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, TransformActivate);
-  friend class internal::RootWindowController;
-  friend class internal::ScopedTargetRootWindow;
+  friend class RootWindowController;
+  friend class ScopedTargetRootWindow;
   friend class test::ShellTestApi;
   friend class shell::WindowWatcher;
 
@@ -591,7 +581,7 @@ class ASH_EXPORT Shell
   // Initializes the root window so that it can host browser windows.
   void InitRootWindow(aura::Window* root_window);
 
-  // ash::internal::SystemModalContainerEventFilterDelegate overrides:
+  // ash::SystemModalContainerEventFilterDelegate overrides:
   virtual bool CanWindowReceiveEvents(aura::Window* window) OVERRIDE;
 
   // Overridden from ui::EventTarget:
@@ -637,15 +627,15 @@ class ASH_EXPORT Shell
   scoped_ptr<MediaDelegate> media_delegate_;
   scoped_ptr<ShelfDelegate> shelf_delegate_;
   scoped_ptr<ShelfItemDelegateManager> shelf_item_delegate_manager_;
-  scoped_ptr<internal::ShelfWindowWatcher> shelf_window_watcher_;
+  scoped_ptr<ShelfWindowWatcher> shelf_window_watcher_;
 
   scoped_ptr<ShelfModel> shelf_model_;
   scoped_ptr<WindowPositioner> window_positioner_;
 
-  scoped_ptr<internal::AppListController> app_list_controller_;
+  scoped_ptr<AppListController> app_list_controller_;
 
-  scoped_ptr<internal::DragDropController> drag_drop_controller_;
-  scoped_ptr<internal::ResizeShadowController> resize_shadow_controller_;
+  scoped_ptr<DragDropController> drag_drop_controller_;
+  scoped_ptr<ResizeShadowController> resize_shadow_controller_;
   scoped_ptr< ::wm::ShadowController> shadow_controller_;
   scoped_ptr< ::wm::VisibilityController> visibility_controller_;
   scoped_ptr< ::wm::WindowModalityController> window_modality_controller_;
@@ -657,7 +647,7 @@ class ASH_EXPORT Shell
   scoped_ptr< ::wm::UserActivityDetector> user_activity_detector_;
   scoped_ptr<VideoDetector> video_detector_;
   scoped_ptr<WindowSelectorController> window_selector_controller_;
-  scoped_ptr<internal::FocusCycler> focus_cycler_;
+  scoped_ptr<FocusCycler> focus_cycler_;
   scoped_ptr<DisplayController> display_controller_;
   scoped_ptr<HighContrastController> high_contrast_controller_;
   scoped_ptr<MagnificationController> magnification_controller_;
@@ -665,67 +655,63 @@ class ASH_EXPORT Shell
   scoped_ptr<AutoclickController> autoclick_controller_;
   scoped_ptr<aura::client::FocusClient> focus_client_;
   aura::client::ActivationClient* activation_client_;
-  scoped_ptr<internal::MouseCursorEventFilter> mouse_cursor_filter_;
-  scoped_ptr<internal::ScreenPositionController> screen_position_controller_;
-  scoped_ptr<internal::SystemModalContainerEventFilter> modality_filter_;
-  scoped_ptr<internal::EventClientImpl> event_client_;
-  scoped_ptr<internal::EventTransformationHandler>
-      event_transformation_handler_;
+  scoped_ptr<MouseCursorEventFilter> mouse_cursor_filter_;
+  scoped_ptr<ScreenPositionController> screen_position_controller_;
+  scoped_ptr<SystemModalContainerEventFilter> modality_filter_;
+  scoped_ptr<EventClientImpl> event_client_;
+  scoped_ptr<EventTransformationHandler> event_transformation_handler_;
   scoped_ptr<WindowTreeHostFactory> window_tree_host_factory_;
 
   // An event filter that pre-handles key events while the partial
   // screenshot UI or the keyboard overlay is active.
-  scoped_ptr<internal::OverlayEventFilter> overlay_filter_;
+  scoped_ptr<OverlayEventFilter> overlay_filter_;
 
   // An event filter for logging keyboard-related metrics.
-  scoped_ptr<internal::KeyboardUMAEventFilter> keyboard_metrics_filter_;
+  scoped_ptr<KeyboardUMAEventFilter> keyboard_metrics_filter_;
 
   // An event filter which handles moving and resizing windows.
   scoped_ptr<ToplevelWindowEventHandler> toplevel_window_event_handler_;
 
   // An event filter which handles system level gestures
-  scoped_ptr<internal::SystemGestureEventFilter> system_gesture_filter_;
+  scoped_ptr<SystemGestureEventFilter> system_gesture_filter_;
 
   // An event filter that pre-handles global accelerators.
-  scoped_ptr<internal::AcceleratorFilter> accelerator_filter_;
+  scoped_ptr<AcceleratorFilter> accelerator_filter_;
 
   // An event filter that pre-handles all key events to send them to an IME.
   scoped_ptr< ::wm::InputMethodEventFilter> input_method_filter_;
 
-  scoped_ptr<internal::DisplayManager> display_manager_;
-  scoped_ptr<base::WeakPtrFactory<internal::DisplayManager> >
+  scoped_ptr<DisplayManager> display_manager_;
+  scoped_ptr<base::WeakPtrFactory<DisplayManager> >
       weak_display_manager_factory_;
 
-  scoped_ptr<internal::LocaleNotificationController>
-      locale_notification_controller_;
+  scoped_ptr<LocaleNotificationController> locale_notification_controller_;
 
   // The maximized window manager (if enabled).
-  scoped_ptr<internal::MaximizeModeWindowManager> maximize_mode_window_manager_;
+  scoped_ptr<MaximizeModeWindowManager> maximize_mode_window_manager_;
 
   scoped_ptr<AccelerometerController> accelerometer_controller_;
 
 #if defined(OS_CHROMEOS)
-  scoped_ptr<internal::PowerEventObserver> power_event_observer_;
-  scoped_ptr<internal::UserActivityNotifier> user_activity_notifier_;
-  scoped_ptr<internal::VideoActivityNotifier> video_activity_notifier_;
+  scoped_ptr<PowerEventObserver> power_event_observer_;
+  scoped_ptr<UserActivityNotifier> user_activity_notifier_;
+  scoped_ptr<VideoActivityNotifier> video_activity_notifier_;
   scoped_ptr<StickyKeysController> sticky_keys_controller_;
-  scoped_ptr<internal::ResolutionNotificationController>
+  scoped_ptr<ResolutionNotificationController>
       resolution_notification_controller_;
-  scoped_ptr<internal::BluetoothNotificationController>
+  scoped_ptr<BluetoothNotificationController>
       bluetooth_notification_controller_;
-  scoped_ptr<internal::LogoutConfirmationController>
-      logout_confirmation_controller_;
-  scoped_ptr<internal::LastWindowClosedLogoutReminder>
+  scoped_ptr<LogoutConfirmationController> logout_confirmation_controller_;
+  scoped_ptr<LastWindowClosedLogoutReminder>
       last_window_closed_logout_reminder_;
   // Controls video output device state.
   scoped_ptr<ui::OutputConfigurator> output_configurator_;
-  scoped_ptr<internal::OutputConfiguratorAnimation>
-      output_configurator_animation_;
-  scoped_ptr<internal::DisplayErrorObserver> display_error_observer_;
-  scoped_ptr<internal::ProjectingObserver> projecting_observer_;
+  scoped_ptr<OutputConfiguratorAnimation> output_configurator_animation_;
+  scoped_ptr<DisplayErrorObserver> display_error_observer_;
+  scoped_ptr<ProjectingObserver> projecting_observer_;
 
   // Listens for output changes and updates the display manager.
-  scoped_ptr<internal::DisplayChangeObserver> display_change_observer_;
+  scoped_ptr<DisplayChangeObserver> display_change_observer_;
 
 #if defined(USE_X11)
   scoped_ptr<ui::EventHandler> magnifier_key_scroll_handler_;
diff --git a/ash/shell/lock_view.cc b/ash/shell/lock_view.cc
index 2cdb4b7..eae9d9c 100644
--- a/ash/shell/lock_view.cc
+++ b/ash/shell/lock_view.cc
@@ -94,9 +94,8 @@ void CreateLockScreen() {
                             (root_window_size.height() - ps.height()) / 2,
                             ps.width(), ps.height());
   params.delegate = lock_view;
-  params.parent = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_LockScreenContainer);
+  params.parent = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                                      kShellWindowId_LockScreenContainer);
   widget->Init(params);
   widget->SetContentsView(lock_view);
   widget->Show();
diff --git a/ash/shell/shell_delegate_impl.cc b/ash/shell/shell_delegate_impl.cc
index 4efd104..2b6ccc4 100644
--- a/ash/shell/shell_delegate_impl.cc
+++ b/ash/shell/shell_delegate_impl.cc
@@ -139,7 +139,7 @@ ash::SessionStateDelegate* ShellDelegateImpl::CreateSessionStateDelegate() {
 }
 
 ash::AccessibilityDelegate* ShellDelegateImpl::CreateAccessibilityDelegate() {
-  return new internal::DefaultAccessibilityDelegate;
+  return new DefaultAccessibilityDelegate;
 }
 
 ash::NewWindowDelegate* ShellDelegateImpl::CreateNewWindowDelegate() {
diff --git a/ash/shell/window_watcher.cc b/ash/shell/window_watcher.cc
index 075d4a3..55231cf 100644
--- a/ash/shell/window_watcher.cc
+++ b/ash/shell/window_watcher.cc
@@ -38,9 +38,8 @@ class WindowWatcher::WorkspaceWindowWatcher : public aura::WindowObserver {
   }
 
   void RootWindowAdded(aura::Window* root) {
-    aura::Window* panel_container = ash::Shell::GetContainer(
-        root,
-        internal::kShellWindowId_PanelContainer);
+    aura::Window* panel_container =
+        ash::Shell::GetContainer(root, kShellWindowId_PanelContainer);
     panel_container->AddObserver(watcher_);
 
     aura::Window* container =
@@ -51,9 +50,8 @@ class WindowWatcher::WorkspaceWindowWatcher : public aura::WindowObserver {
   }
 
   void RootWindowRemoved(aura::Window* root) {
-    aura::Window* panel_container = ash::Shell::GetContainer(
-        root,
-        internal::kShellWindowId_PanelContainer);
+    aura::Window* panel_container =
+        ash::Shell::GetContainer(root, kShellWindowId_PanelContainer);
     panel_container->RemoveObserver(watcher_);
 
     aura::Window* container =
diff --git a/ash/shell_factory.h b/ash/shell_factory.h
index 041c4c1..b990e95 100644
--- a/ash/shell_factory.h
+++ b/ash/shell_factory.h
@@ -24,12 +24,10 @@ class Widget;
 
 namespace ash {
 
-namespace internal {
 views::Widget* CreateDesktopBackground(aura::Window* root_window,
                                        int container_id);
 
 ASH_EXPORT views::Widget* CreateStatusArea(views::View* contents);
-}  // namespace internal
 
 }  // namespace ash
 
diff --git a/ash/shell_unittest.cc b/ash/shell_unittest.cc
index 781b32a..343bd1d 100644
--- a/ash/shell_unittest.cc
+++ b/ash/shell_unittest.cc
@@ -45,53 +45,47 @@ namespace ash {
 namespace {
 
 aura::Window* GetDefaultContainer() {
-  return Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_DefaultContainer);
+  return Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                             kShellWindowId_DefaultContainer);
 }
 
 aura::Window* GetAlwaysOnTopContainer() {
-  return Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_AlwaysOnTopContainer);
+  return Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                             kShellWindowId_AlwaysOnTopContainer);
 }
 
 // Expect ALL the containers!
 void ExpectAllContainers() {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
+  EXPECT_TRUE(Shell::GetContainer(root_window,
+                                  kShellWindowId_DesktopBackgroundContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_DefaultContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_AlwaysOnTopContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window, kShellWindowId_PanelContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window, kShellWindowId_ShelfContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_SystemModalContainer));
   EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_DesktopBackgroundContainer));
+      root_window, kShellWindowId_LockScreenBackgroundContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_LockScreenContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window,
+                                  kShellWindowId_LockSystemModalContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window, kShellWindowId_StatusContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window, kShellWindowId_MenuContainer));
+  EXPECT_TRUE(Shell::GetContainer(root_window,
+                                  kShellWindowId_DragImageAndTooltipContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_SettingBubbleContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_OverlayContainer));
   EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_DefaultContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_AlwaysOnTopContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_PanelContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_ShelfContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_SystemModalContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_LockScreenBackgroundContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_LockScreenContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_LockSystemModalContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_StatusContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_MenuContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_DragImageAndTooltipContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_SettingBubbleContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_OverlayContainer));
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_VirtualKeyboardParentContainer));
+      root_window, kShellWindowId_VirtualKeyboardParentContainer));
 #if defined(OS_CHROMEOS)
-  EXPECT_TRUE(Shell::GetContainer(
-      root_window, internal::kShellWindowId_MouseCursorContainer));
+  EXPECT_TRUE(
+      Shell::GetContainer(root_window, kShellWindowId_MouseCursorContainer));
 #endif
 }
 
@@ -186,10 +180,9 @@ class ShellTest : public test::AshTestBase {
         Shell::GetInstance()->session_state_delegate();
     delegate->LockScreen();
     views::Widget* lock_widget = CreateTestWindow(widget_params);
-    ash::Shell::GetContainer(
-        Shell::GetPrimaryRootWindow(),
-        ash::internal::kShellWindowId_LockScreenContainer)->
-        AddChild(lock_widget->GetNativeView());
+    ash::Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                             ash::kShellWindowId_LockScreenContainer)
+        ->AddChild(lock_widget->GetNativeView());
     lock_widget->Show();
     EXPECT_TRUE(delegate->IsScreenLocked());
     EXPECT_TRUE(lock_widget->GetNativeView()->HasFocus());
@@ -274,8 +267,7 @@ TEST_F(ShellTest, CreateModalWindow) {
 
   // It should be in modal container.
   aura::Window* modal_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_SystemModalContainer);
+      Shell::GetPrimaryRootWindow(), kShellWindowId_SystemModalContainer);
   EXPECT_EQ(modal_container, modal_widget->GetNativeWindow()->parent());
 
   modal_widget->Close();
@@ -308,17 +300,15 @@ TEST_F(ShellTest, CreateLockScreenModalWindow) {
   Shell::GetInstance()->session_state_delegate()->LockScreen();
   // Create a LockScreen window.
   views::Widget* lock_widget = CreateTestWindow(widget_params);
-  ash::Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      ash::internal::kShellWindowId_LockScreenContainer)->
-      AddChild(lock_widget->GetNativeView());
+  ash::Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                           ash::kShellWindowId_LockScreenContainer)
+      ->AddChild(lock_widget->GetNativeView());
   lock_widget->Show();
   EXPECT_TRUE(lock_widget->GetNativeView()->HasFocus());
 
   // It should be in LockScreen container.
   aura::Window* lock_screen = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      ash::internal::kShellWindowId_LockScreenContainer);
+      Shell::GetPrimaryRootWindow(), ash::kShellWindowId_LockScreenContainer);
   EXPECT_EQ(lock_screen, lock_widget->GetNativeWindow()->parent());
 
   // Create a modal window with a lock window as parent.
@@ -328,9 +318,9 @@ TEST_F(ShellTest, CreateLockScreenModalWindow) {
   EXPECT_TRUE(lock_modal_widget->GetNativeView()->HasFocus());
 
   // It should be in LockScreen modal container.
-  aura::Window* lock_modal_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      ash::internal::kShellWindowId_LockSystemModalContainer);
+  aura::Window* lock_modal_container =
+      Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                          ash::kShellWindowId_LockSystemModalContainer);
   EXPECT_EQ(lock_modal_container,
             lock_modal_widget->GetNativeWindow()->parent());
 
@@ -344,8 +334,7 @@ TEST_F(ShellTest, CreateLockScreenModalWindow) {
 
   // It should be in non-LockScreen modal container.
   aura::Window* modal_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      ash::internal::kShellWindowId_SystemModalContainer);
+      Shell::GetPrimaryRootWindow(), ash::kShellWindowId_SystemModalContainer);
   EXPECT_EQ(modal_container, modal_widget->GetNativeWindow()->parent());
 
   // Modal dialog without parent, caused crash see crbug.com/226141
@@ -408,9 +397,9 @@ TEST_F(ShellTest, ManagedWindowModeBasics) {
             shelf_widget->GetWindowBoundsInScreen().bottom());
   // We have a desktop background but not a bare layer.
   // TODO (antrim): enable once we find out why it fails component build.
-  //  internal::DesktopBackgroundWidgetController* background =
+  //  DesktopBackgroundWidgetController* background =
   //      Shell::GetPrimaryRootWindow()->
-  //          GetProperty(internal::kWindowDesktopComponent);
+  //          GetProperty(kWindowDesktopComponent);
   //  EXPECT_TRUE(background);
   //  EXPECT_TRUE(background->widget());
   //  EXPECT_FALSE(background->layer());
diff --git a/ash/shell_window_ids.h b/ash/shell_window_ids.h
index aedc8b5..a4bd516 100644
--- a/ash/shell_window_ids.h
+++ b/ash/shell_window_ids.h
@@ -9,10 +9,6 @@
 
 namespace ash {
 
-// TODO: we're using this in random places outside of ash, it shouldn't be in
-// internal.
-namespace internal {
-
 // A higher-level container that holds all of the containers stacked below
 // kShellWindowId_LockScreenContainer.  Only used by PowerButtonController for
 // animating lower-level containers.
@@ -110,8 +106,6 @@ const int kShellWindowId_MouseCursorContainer = 25;
 // The topmost container, used for power off animation.
 const int kShellWindowId_PowerButtonAnimationContainer = 26;
 
-}  // namespace internal
-
 }  // namespace ash
 
 
diff --git a/ash/sticky_keys/sticky_keys_overlay.cc b/ash/sticky_keys/sticky_keys_overlay.cc
index e91caf4..3bafd39 100644
--- a/ash/sticky_keys/sticky_keys_overlay.cc
+++ b/ash/sticky_keys/sticky_keys_overlay.cc
@@ -223,9 +223,8 @@ StickyKeysOverlay::StickyKeysOverlay()
   params.remove_standard_frame = true;
   params.delegate = overlay_view_;
   params.bounds = CalculateOverlayBounds();
-  params.parent = Shell::GetContainer(
-      Shell::GetTargetRootWindow(),
-      internal::kShellWindowId_OverlayContainer);
+  params.parent = Shell::GetContainer(Shell::GetTargetRootWindow(),
+                                      kShellWindowId_OverlayContainer);
   overlay_widget_.reset(new views::Widget);
   overlay_widget_->Init(params);
   overlay_widget_->SetVisibilityChangedAnimationsEnabled(false);
diff --git a/ash/switchable_windows.cc b/ash/switchable_windows.cc
index 352599b..8d503aa 100644
--- a/ash/switchable_windows.cc
+++ b/ash/switchable_windows.cc
@@ -10,10 +10,8 @@
 namespace ash {
 
 const int kSwitchableWindowContainerIds[] = {
-  internal::kShellWindowId_DefaultContainer,
-  internal::kShellWindowId_AlwaysOnTopContainer,
-  internal::kShellWindowId_PanelContainer
-};
+    kShellWindowId_DefaultContainer, kShellWindowId_AlwaysOnTopContainer,
+    kShellWindowId_PanelContainer};
 
 const size_t kSwitchableWindowContainerIdsLength =
     arraysize(kSwitchableWindowContainerIds);
diff --git a/ash/system/audio/tray_audio.cc b/ash/system/audio/tray_audio.cc
index 9e7c732..194b6c6 100644
--- a/ash/system/audio/tray_audio.cc
+++ b/ash/system/audio/tray_audio.cc
@@ -40,7 +40,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 TrayAudio::TrayAudio(SystemTray* system_tray,
                      scoped_ptr<system::TrayAudioDelegate> audio_delegate)
@@ -147,5 +146,4 @@ void TrayAudio::Update() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/audio/tray_audio.h b/ash/system/audio/tray_audio.h
index 93f99bf..9d76bb9 100644
--- a/ash/system/audio/tray_audio.h
+++ b/ash/system/audio/tray_audio.h
@@ -15,8 +15,6 @@ namespace system {
 class TrayAudioDelegate;
 }
 
-namespace internal {
-
 namespace tray {
 class VolumeView;
 }
@@ -62,7 +60,6 @@ class TrayAudio : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayAudio);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_
diff --git a/ash/system/audio/volume_view.cc b/ash/system/audio/volume_view.cc
index 22fc71f..03b3884 100644
--- a/ash/system/audio/volume_view.cc
+++ b/ash/system/audio/volume_view.cc
@@ -35,7 +35,6 @@ const int kVolumeLevels = 4;
 }  // namespace
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 class VolumeButton : public views::ToggleImageButton {
@@ -328,5 +327,4 @@ bool VolumeView::PerformAction(const ui::Event& event) {
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/audio/volume_view.h b/ash/system/audio/volume_view.h
index a3e8291..167ef45 100644
--- a/ash/system/audio/volume_view.h
+++ b/ash/system/audio/volume_view.h
@@ -16,19 +16,14 @@ class ImageView;
 }
 
 namespace ash {
-
+class HoverHighlightView;
 class SystemTrayItem;
 
 namespace system {
 class TrayAudioDelegate;
 }
 
-namespace internal {
-
-class HoverHighlightView;
-
 namespace tray {
-
 class BarSeparator;
 class VolumeButton;
 class VolumeSlider;
@@ -83,7 +78,6 @@ class VolumeView : public ActionableView,
 };
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
diff --git a/ash/system/bluetooth/tray_bluetooth.cc b/ash/system/bluetooth/tray_bluetooth.cc
index eb3177e..870ea73 100644
--- a/ash/system/bluetooth/tray_bluetooth.cc
+++ b/ash/system/bluetooth/tray_bluetooth.cc
@@ -25,10 +25,7 @@
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
-
 namespace {
 
 // Updates bluetooth device |device| in the |list|. If it is new, append to the
@@ -465,5 +462,4 @@ void TrayBluetooth::OnBluetoothDiscoveringChanged() {
   detailed_->Update();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/bluetooth/tray_bluetooth.h b/ash/system/bluetooth/tray_bluetooth.h
index 2e452c6..1330c3c 100644
--- a/ash/system/bluetooth/tray_bluetooth.h
+++ b/ash/system/bluetooth/tray_bluetooth.h
@@ -9,8 +9,6 @@
 #include "ash/system/tray/system_tray_item.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class BluetoothDefaultView;
 class BluetoothDetailedView;
@@ -42,7 +40,6 @@ class TrayBluetooth : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayBluetooth);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_BLUETOOTH_TRAY_BLUETOOTH_H_
diff --git a/ash/system/chromeos/audio/audio_detailed_view.cc b/ash/system/chromeos/audio/audio_detailed_view.cc
index 803f4dd..b77c406 100644
--- a/ash/system/chromeos/audio/audio_detailed_view.cc
+++ b/ash/system/chromeos/audio/audio_detailed_view.cc
@@ -49,7 +49,6 @@ base::string16 GetAudioDeviceName(const chromeos::AudioDevice& device) {
 using chromeos::CrasAudioHandler;
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 AudioDetailedView::AudioDetailedView(SystemTrayItem* owner,
@@ -173,5 +172,4 @@ void AudioDetailedView::OnViewClicked(views::View* sender) {
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/audio/audio_detailed_view.h b/ash/system/chromeos/audio/audio_detailed_view.h
index 6953676..fc836b3 100644
--- a/ash/system/chromeos/audio/audio_detailed_view.h
+++ b/ash/system/chromeos/audio/audio_detailed_view.h
@@ -17,8 +17,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
-
 class HoverHighlightView;
 
 namespace tray {
@@ -60,7 +58,6 @@ class AudioDetailedView : public TrayDetailsView,
 };
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_AUDIO_AUDIO_DETAILED_VIEW_H_
diff --git a/ash/system/chromeos/audio/tray_audio_chromeos.cc b/ash/system/chromeos/audio/tray_audio_chromeos.cc
index fc20aea..0126dda 100644
--- a/ash/system/chromeos/audio/tray_audio_chromeos.cc
+++ b/ash/system/chromeos/audio/tray_audio_chromeos.cc
@@ -16,8 +16,6 @@ namespace ash {
 using system::TrayAudioDelegate;
 using system::TrayAudioDelegateChromeOs;
 
-namespace internal {
-
 TrayAudioChromeOs::TrayAudioChromeOs(SystemTray* system_tray)
     : TrayAudio(system_tray,
                 scoped_ptr<TrayAudioDelegate>(new TrayAudioDelegateChromeOs())),
@@ -56,5 +54,4 @@ void TrayAudioChromeOs::DestroyDetailedView() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/audio/tray_audio_chromeos.h b/ash/system/chromeos/audio/tray_audio_chromeos.h
index 6817f85..c5cb9ea 100644
--- a/ash/system/chromeos/audio/tray_audio_chromeos.h
+++ b/ash/system/chromeos/audio/tray_audio_chromeos.h
@@ -10,9 +10,6 @@
 #include "base/memory/scoped_ptr.h"
 
 namespace ash {
-
-namespace internal {
-
 namespace tray {
 class AudioDetailedView;
 }
@@ -36,7 +33,6 @@ class ASH_EXPORT TrayAudioChromeOs : public TrayAudio {
   DISALLOW_COPY_AND_ASSIGN(TrayAudioChromeOs);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_CHROMEOS_H_
diff --git a/ash/system/chromeos/bluetooth/bluetooth_notification_controller.cc b/ash/system/chromeos/bluetooth/bluetooth_notification_controller.cc
index 76e2cf8..1965ac2 100644
--- a/ash/system/chromeos/bluetooth/bluetooth_notification_controller.cc
+++ b/ash/system/chromeos/bluetooth/bluetooth_notification_controller.cc
@@ -143,7 +143,6 @@ void BluetoothPairingNotificationDelegate::ButtonClick(int button_index) {
 
 
 namespace ash {
-namespace internal {
 
 BluetoothNotificationController::BluetoothNotificationController()
     : weak_ptr_factory_(this) {
@@ -368,5 +367,4 @@ void BluetoothNotificationController::NotifyPairedDevice(
   message_center::MessageCenter::Get()->AddNotification(notification.Pass());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/bluetooth/bluetooth_notification_controller.h b/ash/system/chromeos/bluetooth/bluetooth_notification_controller.h
index 0d51a40c..e44b281 100644
--- a/ash/system/chromeos/bluetooth/bluetooth_notification_controller.h
+++ b/ash/system/chromeos/bluetooth/bluetooth_notification_controller.h
@@ -17,7 +17,6 @@
 #include "device/bluetooth/bluetooth_device.h"
 
 namespace ash {
-namespace internal {
 
 // The BluetoothNotificationController receives incoming pairing requests from
 // the BluetoothAdapter, and notifications of changes to the adapter state and
@@ -89,7 +88,6 @@ class ASH_EXPORT BluetoothNotificationController
   DISALLOW_COPY_AND_ASSIGN(BluetoothNotificationController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_BLUETOOTH_BLUETOOTH_NOTIFICATION_CONTROLLER_H_
diff --git a/ash/system/chromeos/brightness/tray_brightness.cc b/ash/system/chromeos/brightness/tray_brightness.cc
index 23f6fa7..901b0aa 100644
--- a/ash/system/chromeos/brightness/tray_brightness.cc
+++ b/ash/system/chromeos/brightness/tray_brightness.cc
@@ -32,10 +32,7 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
-
 namespace {
 
 // We don't let the screen brightness go lower than this when it's being
@@ -281,5 +278,4 @@ void TrayBrightness::HandleBrightnessChanged(double percent,
     PopupDetailedView(kTrayPopupAutoCloseDelayInSeconds, false);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/brightness/tray_brightness.h b/ash/system/chromeos/brightness/tray_brightness.h
index 9b5addf..379a8d2 100644
--- a/ash/system/chromeos/brightness/tray_brightness.h
+++ b/ash/system/chromeos/brightness/tray_brightness.h
@@ -11,8 +11,6 @@
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class BrightnessView;
 }
@@ -66,7 +64,6 @@ class ASH_EXPORT TrayBrightness
   DISALLOW_COPY_AND_ASSIGN(TrayBrightness);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_BRIGHTNESS_TRAY_BRIGHTNESS_H_
diff --git a/ash/system/chromeos/brightness/tray_brightness_unittest.cc b/ash/system/chromeos/brightness/tray_brightness_unittest.cc
index 72e1816..a1b5d70 100644
--- a/ash/system/chromeos/brightness/tray_brightness_unittest.cc
+++ b/ash/system/chromeos/brightness/tray_brightness_unittest.cc
@@ -11,7 +11,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-
 namespace {
 
 user::LoginStatus GetUserLoginStatus() {
@@ -20,8 +19,6 @@ user::LoginStatus GetUserLoginStatus() {
 
 }  // namespace
 
-namespace internal {
-
 class TrayBrightnessTest : public test::AshTestBase {
  public:
   TrayBrightnessTest() {}
@@ -95,7 +92,5 @@ TEST_F(TrayBrightnessTest, DetailedViewVisibilityChangesDuringMaximizeMode) {
   EXPECT_TRUE(tray->visible());
 }
 
-}  // namespace internal
-
 }  // namespace ash
 
diff --git a/ash/system/chromeos/enterprise/tray_enterprise.cc b/ash/system/chromeos/enterprise/tray_enterprise.cc
index 8fca1c6..ecb54e4 100644
--- a/ash/system/chromeos/enterprise/tray_enterprise.cc
+++ b/ash/system/chromeos/enterprise/tray_enterprise.cc
@@ -12,7 +12,6 @@
 #include "grit/ash_resources.h"
 
 namespace ash {
-namespace internal {
 
 TrayEnterprise::TrayEnterprise(SystemTray* system_tray)
     : SystemTrayItem(system_tray),
@@ -56,5 +55,4 @@ void TrayEnterprise::OnViewClicked(views::View* sender) {
   Shell::GetInstance()->system_tray_delegate()->ShowEnterpriseInfo();
 }
 
-} // namespace internal
 } // namespace ash
diff --git a/ash/system/chromeos/enterprise/tray_enterprise.h b/ash/system/chromeos/enterprise/tray_enterprise.h
index 697dfcd..984ef21 100644
--- a/ash/system/chromeos/enterprise/tray_enterprise.h
+++ b/ash/system/chromeos/enterprise/tray_enterprise.h
@@ -14,8 +14,6 @@ class SystemTray;
 }
 
 namespace ash {
-namespace internal {
-
 class LabelTrayView;
 
 class TrayEnterprise : public SystemTrayItem,
@@ -45,7 +43,6 @@ class TrayEnterprise : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayEnterprise);
 };
 
-} // namespace internal
 } // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_ENTERPRISE_TRAY_ENTERPRISE_H
diff --git a/ash/system/chromeos/label_tray_view.cc b/ash/system/chromeos/label_tray_view.cc
index 9a57b32..6d1665f 100644
--- a/ash/system/chromeos/label_tray_view.cc
+++ b/ash/system/chromeos/label_tray_view.cc
@@ -14,7 +14,6 @@
 #include "ui/views/layout/fill_layout.h"
 
 namespace ash {
-namespace internal {
 
 LabelTrayView::LabelTrayView(ViewClickListener* click_listener,
                              int icon_resource_id)
@@ -64,5 +63,4 @@ views::View* LabelTrayView::CreateChildView(
   return child;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/label_tray_view.h b/ash/system/chromeos/label_tray_view.h
index b29c37b..bef5adf 100644
--- a/ash/system/chromeos/label_tray_view.h
+++ b/ash/system/chromeos/label_tray_view.h
@@ -9,7 +9,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 class ViewClickListener;
 
@@ -31,7 +30,6 @@ class LabelTrayView : public views::View {
   DISALLOW_COPY_AND_ASSIGN(LabelTrayView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_LABEL_TRAY_VIEW_H_
diff --git a/ash/system/chromeos/managed/tray_locally_managed_user.cc b/ash/system/chromeos/managed/tray_locally_managed_user.cc
index e9f44a5..2758879 100644
--- a/ash/system/chromeos/managed/tray_locally_managed_user.cc
+++ b/ash/system/chromeos/managed/tray_locally_managed_user.cc
@@ -21,7 +21,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 
 const char TrayLocallyManagedUser::kNotificationId[] =
     "chrome://user/locally-managed";
@@ -89,5 +88,4 @@ void TrayLocallyManagedUser::CreateOrUpdateNotification(
   message_center::MessageCenter::Get()->AddNotification(notification.Pass());
 }
 
-} // namespace internal
-} // namespace ash
+}  // namespace ash
diff --git a/ash/system/chromeos/managed/tray_locally_managed_user.h b/ash/system/chromeos/managed/tray_locally_managed_user.h
index a508ec3..666530b 100644
--- a/ash/system/chromeos/managed/tray_locally_managed_user.h
+++ b/ash/system/chromeos/managed/tray_locally_managed_user.h
@@ -11,11 +11,8 @@
 #include "base/strings/string16.h"
 
 namespace ash {
-class SystemTray;
-
-namespace internal {
-
 class LabelTrayView;
+class SystemTray;
 
 class ASH_EXPORT TrayLocallyManagedUser : public SystemTrayItem,
                                           public ViewClickListener {
@@ -49,7 +46,6 @@ class ASH_EXPORT TrayLocallyManagedUser : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayLocallyManagedUser);
 };
 
-} // namespace internal
 } // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_LOCALLY_MANAGED_TRAY_LOCALLY_MANAGED_USER_H
diff --git a/ash/system/chromeos/managed/tray_locally_managed_user_unittest.cc b/ash/system/chromeos/managed/tray_locally_managed_user_unittest.cc
index 46f60d1..ca5af22 100644
--- a/ash/system/chromeos/managed/tray_locally_managed_user_unittest.cc
+++ b/ash/system/chromeos/managed/tray_locally_managed_user_unittest.cc
@@ -16,7 +16,6 @@
 using message_center::NotificationList;
 
 namespace ash {
-namespace internal {
 
 class TrayLocallyManagedUserTest : public test::AshTestBase {
  public:
@@ -85,5 +84,4 @@ TEST_F(TrayLocallyManagedUserInitialTest, LocallyManagedUserNoCrash) {
             notification->rich_notification_data().priority);
 }
 
-}  // namespace test
 }  // namespace
diff --git a/ash/system/chromeos/network/network_detailed_view.h b/ash/system/chromeos/network/network_detailed_view.h
index fe7ac21d..772f239 100644
--- a/ash/system/chromeos/network/network_detailed_view.h
+++ b/ash/system/chromeos/network/network_detailed_view.h
@@ -9,8 +9,6 @@
 #include "chromeos/network/network_state_handler.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 // Abstract base class for all NetworkDetailedView derived subclasses,
@@ -48,8 +46,6 @@ class NetworkDetailedView : public TrayDetailsView {
 };
 
 }  // namespace tray
-
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_DETAILED_VIEW_H
diff --git a/ash/system/chromeos/network/network_state_list_detailed_view.cc b/ash/system/chromeos/network/network_state_list_detailed_view.cc
index a6bb3aa..80d243f 100644
--- a/ash/system/chromeos/network/network_state_list_detailed_view.cc
+++ b/ash/system/chromeos/network/network_state_list_detailed_view.cc
@@ -51,9 +51,7 @@ using chromeos::NetworkStateHandler;
 using chromeos::NetworkTypePattern;
 
 namespace ash {
-namespace internal {
 namespace tray {
-
 namespace {
 
 // Delay between scan requests.
@@ -126,7 +124,7 @@ class NetworkStateListDetailedView::InfoBubble
     set_use_focusless(true);
     set_parent_window(ash::Shell::GetContainer(
         anchor->GetWidget()->GetNativeWindow()->GetRootWindow(),
-        ash::internal::kShellWindowId_SettingBubbleContainer));
+        ash::kShellWindowId_SettingBubbleContainer));
     SetLayoutManager(new views::FillLayout());
     AddChildView(content);
   }
@@ -834,5 +832,4 @@ void NetworkStateListDetailedView::ToggleMobile() {
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/network/network_state_list_detailed_view.h b/ash/system/chromeos/network/network_state_list_detailed_view.h
index c54325ca..c868235 100644
--- a/ash/system/chromeos/network/network_state_list_detailed_view.h
+++ b/ash/system/chromeos/network/network_state_list_detailed_view.h
@@ -27,12 +27,8 @@ class BubbleDelegateView;
 }
 
 namespace ash {
-
-class SystemTrayItem;
-
-namespace internal {
-
 class HoverHighlightView;
+class SystemTrayItem;
 class TrayPopupLabelButton;
 
 namespace tray {
@@ -153,7 +149,6 @@ class NetworkStateListDetailedView
 };
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_STATE_LIST_DETAILED_VIEW
diff --git a/ash/system/chromeos/network/tray_network.cc b/ash/system/chromeos/network/tray_network.cc
index d8e745b..598246c 100644
--- a/ash/system/chromeos/network/tray_network.cc
+++ b/ash/system/chromeos/network/tray_network.cc
@@ -40,8 +40,6 @@ using chromeos::NetworkStateHandler;
 using chromeos::NetworkTypePattern;
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 class NetworkTrayView : public TrayItemView,
@@ -374,5 +372,4 @@ void TrayNetwork::NetworkServiceChanged(const chromeos::NetworkState* network) {
     detailed_->NetworkServiceChanged(network);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/network/tray_network.h b/ash/system/chromeos/network/tray_network.h
index 1b0b7e6..54f79c6 100644
--- a/ash/system/chromeos/network/tray_network.h
+++ b/ash/system/chromeos/network/tray_network.h
@@ -20,8 +20,6 @@ class NetworkState;
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class NetworkDefaultView;
 class NetworkDetailedView;
@@ -71,7 +69,6 @@ class TrayNetwork : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayNetwork);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_H
diff --git a/ash/system/chromeos/network/tray_network_state_observer.cc b/ash/system/chromeos/network/tray_network_state_observer.cc
index d090762..6de9bfe 100644
--- a/ash/system/chromeos/network/tray_network_state_observer.cc
+++ b/ash/system/chromeos/network/tray_network_state_observer.cc
@@ -16,7 +16,6 @@
 using chromeos::NetworkHandler;
 
 namespace ash {
-namespace internal {
 
 TrayNetworkStateObserver::TrayNetworkStateObserver(Delegate* delegate)
     : delegate_(delegate) {
@@ -56,4 +55,3 @@ void TrayNetworkStateObserver::NetworkPropertiesUpdated(
 }
 
 }  // namespace ash
-}  // namespace internal
diff --git a/ash/system/chromeos/network/tray_network_state_observer.h b/ash/system/chromeos/network/tray_network_state_observer.h
index e2f47d1..edc7891 100644
--- a/ash/system/chromeos/network/tray_network_state_observer.h
+++ b/ash/system/chromeos/network/tray_network_state_observer.h
@@ -11,7 +11,6 @@
 #include "chromeos/network/network_state_handler_observer.h"
 
 namespace ash {
-namespace internal {
 
 class TrayNetworkStateObserver : public chromeos::NetworkStateHandlerObserver {
  public:
@@ -48,6 +47,5 @@ class TrayNetworkStateObserver : public chromeos::NetworkStateHandlerObserver {
 };
 
 }  // namespace ash
-}  // namespace internal
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_NETWORK_STATE_OBSERVER_H
diff --git a/ash/system/chromeos/network/tray_sms.cc b/ash/system/chromeos/network/tray_sms.cc
index d16865b..c3147a6 100644
--- a/ash/system/chromeos/network/tray_sms.cc
+++ b/ash/system/chromeos/network/tray_sms.cc
@@ -53,7 +53,6 @@ bool GetMessageFromDictionary(const base::DictionaryValue* message,
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 class TraySms::SmsDefaultView : public TrayItemMore {
  public:
@@ -417,5 +416,4 @@ void TraySms::Update(bool notify) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/network/tray_sms.h b/ash/system/chromeos/network/tray_sms.h
index 5a79360..9796acf 100644
--- a/ash/system/chromeos/network/tray_sms.h
+++ b/ash/system/chromeos/network/tray_sms.h
@@ -12,7 +12,6 @@
 #include "chromeos/network/network_sms_handler.h"
 
 namespace ash {
-namespace internal {
 
 class TraySms : public SystemTrayItem,
                 public chromeos::NetworkSmsHandler::Observer {
@@ -60,7 +59,6 @@ class TraySms : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TraySms);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_SMS_H
diff --git a/ash/system/chromeos/network/tray_vpn.cc b/ash/system/chromeos/network/tray_vpn.cc
index d150626..3325557 100644
--- a/ash/system/chromeos/network/tray_vpn.cc
+++ b/ash/system/chromeos/network/tray_vpn.cc
@@ -27,8 +27,6 @@ using chromeos::NetworkStateHandler;
 using chromeos::NetworkTypePattern;
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 class VpnDefaultView : public TrayItemMore,
@@ -176,5 +174,4 @@ void TrayVPN::NetworkServiceChanged(const chromeos::NetworkState* network) {
     detailed_->NetworkServiceChanged(network);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/network/tray_vpn.h b/ash/system/chromeos/network/tray_vpn.h
index 1d16e54..601d842 100644
--- a/ash/system/chromeos/network/tray_vpn.h
+++ b/ash/system/chromeos/network/tray_vpn.h
@@ -10,8 +10,6 @@
 #include "base/memory/scoped_ptr.h"
 
 namespace ash {
-namespace internal {
-
 class TrayNetworkStateObserver;
 
 namespace tray {
@@ -50,7 +48,6 @@ class TrayVPN : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayVPN);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_TRAY_VPN_H
diff --git a/ash/system/chromeos/power/power_event_observer.cc b/ash/system/chromeos/power/power_event_observer.cc
index 42d67f9..d2f3e58 100644
--- a/ash/system/chromeos/power/power_event_observer.cc
+++ b/ash/system/chromeos/power/power_event_observer.cc
@@ -14,7 +14,6 @@
 #include "ui/wm/core/user_activity_detector.h"
 
 namespace ash {
-namespace internal {
 
 PowerEventObserver::PowerEventObserver()
     : screen_locked_(false) {
@@ -80,5 +79,4 @@ void PowerEventObserver::ScreenIsUnlocked() {
   screen_locked_ = false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/power_event_observer.h b/ash/system/chromeos/power/power_event_observer.h
index b35cb1b..518959b 100644
--- a/ash/system/chromeos/power/power_event_observer.h
+++ b/ash/system/chromeos/power/power_event_observer.h
@@ -13,7 +13,6 @@
 #include "chromeos/dbus/session_manager_client.h"
 
 namespace ash {
-namespace internal {
 
 // A class that observes power-management-related events.
 class ASH_EXPORT PowerEventObserver
@@ -44,7 +43,6 @@ class ASH_EXPORT PowerEventObserver
   DISALLOW_COPY_AND_ASSIGN(PowerEventObserver);
 };
 
-}  // namespace internal
 }  // namespace chromeos
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_POWER_EVENT_OBSERVER_H_
diff --git a/ash/system/chromeos/power/power_event_observer_unittest.cc b/ash/system/chromeos/power/power_event_observer_unittest.cc
index a2282c3..94dcdedd 100644
--- a/ash/system/chromeos/power/power_event_observer_unittest.cc
+++ b/ash/system/chromeos/power/power_event_observer_unittest.cc
@@ -11,7 +11,6 @@
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace ash {
-namespace internal {
 
 class PowerEventObserverTest : public test::AshTestBase {
  public:
@@ -68,5 +67,4 @@ TEST_F(PowerEventObserverTest, LockBeforeSuspend) {
   EXPECT_EQ(0, client->GetNumPendingSuspendReadinessCallbacks());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/power_status.cc b/ash/system/chromeos/power/power_status.cc
index 68cdf1a..7f418c8 100644
--- a/ash/system/chromeos/power/power_status.cc
+++ b/ash/system/chromeos/power/power_status.cc
@@ -24,8 +24,6 @@
 #include "ui/gfx/rect.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Updates |proto| to ensure that its fields are consistent.
@@ -305,5 +303,4 @@ void PowerStatus::PowerChanged(
   FOR_EACH_OBSERVER(Observer, observers_, OnPowerStatusChanged());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/power_status.h b/ash/system/chromeos/power/power_status.h
index e306049..88f3585 100644
--- a/ash/system/chromeos/power/power_status.h
+++ b/ash/system/chromeos/power/power_status.h
@@ -15,7 +15,6 @@
 #include "ui/gfx/image/image_skia.h"
 
 namespace ash {
-namespace internal {
 
 // PowerStatus is a singleton that receives updates about the system's
 // power status from chromeos::PowerManagerClient and makes the information
@@ -152,7 +151,6 @@ class ASH_EXPORT PowerStatus : public chromeos::PowerManagerClient::Observer {
   DISALLOW_COPY_AND_ASSIGN(PowerStatus);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_POWER_STATUS_H_
diff --git a/ash/system/chromeos/power/power_status_unittest.cc b/ash/system/chromeos/power/power_status_unittest.cc
index ba9d2c1..cf1da4b 100644
--- a/ash/system/chromeos/power/power_status_unittest.cc
+++ b/ash/system/chromeos/power/power_status_unittest.cc
@@ -15,8 +15,6 @@
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 class TestObserver : public PowerStatus::Observer {
@@ -142,5 +140,4 @@ TEST_F(PowerStatusTest, SplitTimeIntoHoursAndMinutes) {
   EXPECT_EQ(3, minutes);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/power_status_view.cc b/ash/system/chromeos/power/power_status_view.cc
index dbcf1e1..058ac08 100644
--- a/ash/system/chromeos/power/power_status_view.cc
+++ b/ash/system/chromeos/power/power_status_view.cc
@@ -22,7 +22,6 @@
 #include "ui/views/layout/grid_layout.h"
 
 namespace ash {
-namespace internal {
 
 // Padding between battery status text and battery icon on default view.
 const int kPaddingBetweenBatteryStatusAndIcon = 3;
@@ -84,8 +83,7 @@ void PowerStatusView::LayoutDefaultView() {
                              kTrayPopupPaddingBetweenItems);
     SetLayoutManager(layout);
 
-    icon_ =
-        new ash::internal::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
+    icon_ = new ash::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
     AddChildView(icon_);
 
     AddChildView(percentage_label_);
@@ -218,5 +216,4 @@ void PowerStatusView::Layout() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/power_status_view.h b/ash/system/chromeos/power/power_status_view.h
index e560e96..940ae0e 100644
--- a/ash/system/chromeos/power/power_status_view.h
+++ b/ash/system/chromeos/power/power_status_view.h
@@ -15,7 +15,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT PowerStatusView : public views::View,
                                    public PowerStatus::Observer {
@@ -68,7 +67,6 @@ class ASH_EXPORT PowerStatusView : public views::View,
   DISALLOW_COPY_AND_ASSIGN(PowerStatusView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_POWER_STATUS_VIEW_H_
diff --git a/ash/system/chromeos/power/power_status_view_unittest.cc b/ash/system/chromeos/power/power_status_view_unittest.cc
index 22cd892..5cf4332 100644
--- a/ash/system/chromeos/power/power_status_view_unittest.cc
+++ b/ash/system/chromeos/power/power_status_view_unittest.cc
@@ -15,7 +15,6 @@
 using power_manager::PowerSupplyProperties;
 
 namespace ash {
-namespace internal {
 
 class PowerStatusViewTest : public test::AshTestBase {
  public:
@@ -212,5 +211,4 @@ TEST_F(PowerStatusNotificationViewTest, Basic) {
   EXPECT_TRUE(RemainingTimeInView().empty());
 }
 
-}  // internal
-}  // ash
+}  // namespace ash
diff --git a/ash/system/chromeos/power/tray_power.cc b/ash/system/chromeos/power/tray_power.cc
index de3ff76..5442266 100644
--- a/ash/system/chromeos/power/tray_power.cc
+++ b/ash/system/chromeos/power/tray_power.cc
@@ -38,9 +38,7 @@ using message_center::MessageCenter;
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace tray {
-
 namespace {
 
 const int kMaxSpringChargerAccessibilityNotifyCount = 3;
@@ -397,5 +395,4 @@ void TrayPower::RecordChargerType() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/tray_power.h b/ash/system/chromeos/power/tray_power.h
index d79ac5e..3bd0b20 100644
--- a/ash/system/chromeos/power/tray_power.h
+++ b/ash/system/chromeos/power/tray_power.h
@@ -20,8 +20,6 @@ class MessageCenter;
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class PowerNotificationView;
 class PowerTrayView;
@@ -111,7 +109,6 @@ class ASH_EXPORT TrayPower : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayPower);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_
diff --git a/ash/system/chromeos/power/tray_power_unittest.cc b/ash/system/chromeos/power/tray_power_unittest.cc
index a5552fa..6be2dfc 100644
--- a/ash/system/chromeos/power/tray_power_unittest.cc
+++ b/ash/system/chromeos/power/tray_power_unittest.cc
@@ -42,7 +42,6 @@ class MockMessageCenter : public message_center::FakeMessageCenter {
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 class TrayPowerTest : public test::AshTestBase {
  public:
@@ -232,5 +231,4 @@ TEST_F(TrayPowerTest, UpdateNotificationState) {
   EXPECT_EQ(TrayPower::NOTIFICATION_NONE, notification_state());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/user_activity_notifier.cc b/ash/system/chromeos/power/user_activity_notifier.cc
index a67f334..7afd3a8 100644
--- a/ash/system/chromeos/power/user_activity_notifier.cc
+++ b/ash/system/chromeos/power/user_activity_notifier.cc
@@ -12,8 +12,6 @@
 #include "ui/wm/core/user_activity_detector.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Minimum number of seconds between notifications.
@@ -64,5 +62,4 @@ void UserActivityNotifier::OnUserActivity(const ui::Event* event) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/user_activity_notifier.h b/ash/system/chromeos/power/user_activity_notifier.h
index 4374304..22ac4c0 100644
--- a/ash/system/chromeos/power/user_activity_notifier.h
+++ b/ash/system/chromeos/power/user_activity_notifier.h
@@ -15,7 +15,6 @@ class UserActivityDetector;
 }  // namespace wm
 
 namespace ash {
-namespace internal {
 
 // Notifies the power manager when the user is active.
 class UserActivityNotifier : public ::wm::UserActivityObserver {
@@ -35,7 +34,6 @@ class UserActivityNotifier : public ::wm::UserActivityObserver {
   DISALLOW_COPY_AND_ASSIGN(UserActivityNotifier);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_USER_ACTIVITY_NOTIFIER_H_
diff --git a/ash/system/chromeos/power/video_activity_notifier.cc b/ash/system/chromeos/power/video_activity_notifier.cc
index 8a82fb3..07f8490 100644
--- a/ash/system/chromeos/power/video_activity_notifier.cc
+++ b/ash/system/chromeos/power/video_activity_notifier.cc
@@ -9,8 +9,6 @@
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Minimum number of seconds between notifications.
@@ -47,5 +45,4 @@ void VideoActivityNotifier::OnLockStateChanged(bool locked) {
   screen_is_locked_ = locked;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/power/video_activity_notifier.h b/ash/system/chromeos/power/video_activity_notifier.h
index ae57d28..8c2dc41 100644
--- a/ash/system/chromeos/power/video_activity_notifier.h
+++ b/ash/system/chromeos/power/video_activity_notifier.h
@@ -11,7 +11,6 @@
 #include "base/time/time.h"
 
 namespace ash {
-namespace internal {
 
 // Notifies the power manager when a video is playing.
 class VideoActivityNotifier : public VideoDetectorObserver,
@@ -38,7 +37,6 @@ class VideoActivityNotifier : public VideoDetectorObserver,
   DISALLOW_COPY_AND_ASSIGN(VideoActivityNotifier);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_VIDEO_ACTIVITY_NOTIFIER_H_
diff --git a/ash/system/chromeos/screen_security/screen_capture_tray_item.cc b/ash/system/chromeos/screen_security/screen_capture_tray_item.cc
index 92e9309..c4689de 100644
--- a/ash/system/chromeos/screen_security/screen_capture_tray_item.cc
+++ b/ash/system/chromeos/screen_security/screen_capture_tray_item.cc
@@ -16,7 +16,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 const char kScreenCaptureNotificationId[] = "chrome://screen/capture";
@@ -90,5 +89,4 @@ void ScreenCaptureTrayItem::OnScreenCaptureStop() {
   Update();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/screen_security/screen_capture_tray_item.h b/ash/system/chromeos/screen_security/screen_capture_tray_item.h
index 92f6c8a..5285ab2 100644
--- a/ash/system/chromeos/screen_security/screen_capture_tray_item.h
+++ b/ash/system/chromeos/screen_security/screen_capture_tray_item.h
@@ -13,7 +13,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT ScreenCaptureTrayItem : public ScreenTrayItem,
                                          public ScreenCaptureObserver {
@@ -41,7 +40,6 @@ class ASH_EXPORT ScreenCaptureTrayItem : public ScreenTrayItem,
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureTrayItem);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SCREEN_CAPTURE_SCREEN_CAPTURE_TRAY_ITEM_H_
diff --git a/ash/system/chromeos/screen_security/screen_share_tray_item.cc b/ash/system/chromeos/screen_security/screen_share_tray_item.cc
index 93d858a..e2bf334 100644
--- a/ash/system/chromeos/screen_security/screen_share_tray_item.cc
+++ b/ash/system/chromeos/screen_security/screen_share_tray_item.cc
@@ -16,7 +16,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 const char kScreenShareNotificationId[] = "chrome://screen/share";
@@ -100,5 +99,4 @@ void ScreenShareTrayItem::OnScreenShareStop() {
   Update();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/screen_security/screen_share_tray_item.h b/ash/system/chromeos/screen_security/screen_share_tray_item.h
index 14f26e5..d8d8f1e 100644
--- a/ash/system/chromeos/screen_security/screen_share_tray_item.h
+++ b/ash/system/chromeos/screen_security/screen_share_tray_item.h
@@ -13,7 +13,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT ScreenShareTrayItem : public ScreenTrayItem,
                                        public ScreenShareObserver {
@@ -41,7 +40,6 @@ class ASH_EXPORT ScreenShareTrayItem : public ScreenTrayItem,
   DISALLOW_COPY_AND_ASSIGN(ScreenShareTrayItem);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SCREEN_SHARE_SCREEN_SHARE_TRAY_ITEM_H_
diff --git a/ash/system/chromeos/screen_security/screen_tray_item.cc b/ash/system/chromeos/screen_security/screen_tray_item.cc
index 7e7dc5f..f6ac38c 100644
--- a/ash/system/chromeos/screen_security/screen_tray_item.cc
+++ b/ash/system/chromeos/screen_security/screen_tray_item.cc
@@ -16,8 +16,6 @@ const int kStopButtonRightPadding = 18;
 }  // namespace
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 // ScreenTrayView implementations.
@@ -210,5 +208,4 @@ void ScreenTrayItem::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
   tray_view_->Layout();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/screen_security/screen_tray_item.h b/ash/system/chromeos/screen_security/screen_tray_item.h
index ddbb126..9e5880d 100644
--- a/ash/system/chromeos/screen_security/screen_tray_item.h
+++ b/ash/system/chromeos/screen_security/screen_tray_item.h
@@ -20,8 +20,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
-
 class ScreenTrayItem;
 
 namespace tray {
@@ -141,7 +139,6 @@ class ASH_EXPORT ScreenTrayItem : public SystemTrayItem {
   DISALLOW_COPY_AND_ASSIGN(ScreenTrayItem);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SCREEN_TRAY_ITEM_H_
diff --git a/ash/system/chromeos/screen_security/screen_tray_item_unittest.cc b/ash/system/chromeos/screen_security/screen_tray_item_unittest.cc
index c8e673c..027d81c 100644
--- a/ash/system/chromeos/screen_security/screen_tray_item_unittest.cc
+++ b/ash/system/chromeos/screen_security/screen_tray_item_unittest.cc
@@ -17,7 +17,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 // Test with unicode strings.
 const char kTestScreenCaptureAppName[] =
@@ -223,5 +222,4 @@ TEST_F(ScreenShareTest, SystemTrayInteraction) {
   TestSystemTrayInteraction(this);
 }
 
-} // namespace internal
-} // namespace ash
+}  // namespace ash
diff --git a/ash/system/chromeos/session/last_window_closed_logout_reminder.cc b/ash/system/chromeos/session/last_window_closed_logout_reminder.cc
index 97f77111..de85d46 100644
--- a/ash/system/chromeos/session/last_window_closed_logout_reminder.cc
+++ b/ash/system/chromeos/session/last_window_closed_logout_reminder.cc
@@ -12,8 +12,6 @@
 #include "base/time/time.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 const int kLogoutConfirmationDelayInSeconds = 20;
 }
@@ -41,5 +39,4 @@ void LastWindowClosedLogoutReminder::OnLastWindowClosed() {
       base::TimeDelta::FromSeconds(kLogoutConfirmationDelayInSeconds));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/last_window_closed_logout_reminder.h b/ash/system/chromeos/session/last_window_closed_logout_reminder.h
index 5cea7cc..5914225 100644
--- a/ash/system/chromeos/session/last_window_closed_logout_reminder.h
+++ b/ash/system/chromeos/session/last_window_closed_logout_reminder.h
@@ -10,7 +10,6 @@
 #include "base/compiler_specific.h"
 
 namespace ash {
-namespace internal {
 
 // Shows a dialog asking the user whether to end the session when the last
 // window has been closed in a public session.
@@ -25,7 +24,6 @@ class LastWindowClosedLogoutReminder : public LastWindowClosedObserver {
   DISALLOW_COPY_AND_ASSIGN(LastWindowClosedLogoutReminder);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SESSION_LAST_WINDOW_CLOSED_LOGOUT_REMINDER_H_
diff --git a/ash/system/chromeos/session/logout_button_tray.cc b/ash/system/chromeos/session/logout_button_tray.cc
index 971441d..850b850 100644
--- a/ash/system/chromeos/session/logout_button_tray.cc
+++ b/ash/system/chromeos/session/logout_button_tray.cc
@@ -25,8 +25,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kLogoutButtonHorizontalExtraPadding = 7;
@@ -164,5 +162,4 @@ void LogoutButtonTray::UpdateVisibility() {
              login_status_ != user::LOGGED_IN_LOCKED);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/logout_button_tray.h b/ash/system/chromeos/session/logout_button_tray.h
index 2406567..8c40c2a 100644
--- a/ash/system/chromeos/session/logout_button_tray.h
+++ b/ash/system/chromeos/session/logout_button_tray.h
@@ -19,8 +19,6 @@ class LabelButton;
 }
 
 namespace ash {
-namespace internal {
-
 class StatusAreaWidget;
 
 // Adds a logout button to the launcher's status area if enabled by the
@@ -60,7 +58,6 @@ class ASH_EXPORT LogoutButtonTray : public TrayBackgroundView,
   DISALLOW_COPY_AND_ASSIGN(LogoutButtonTray);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_BUTTON_TRAY_H_
diff --git a/ash/system/chromeos/session/logout_confirmation_controller.cc b/ash/system/chromeos/session/logout_confirmation_controller.cc
index f0fc36a..61d8c9b 100644
--- a/ash/system/chromeos/session/logout_confirmation_controller.cc
+++ b/ash/system/chromeos/session/logout_confirmation_controller.cc
@@ -13,7 +13,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 LogoutConfirmationController::LogoutConfirmationController(
     const base::Closure& logout_closure)
@@ -83,5 +82,4 @@ void LogoutConfirmationController::OnDialogClosed() {
   logout_timer_.Stop();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/logout_confirmation_controller.h b/ash/system/chromeos/session/logout_confirmation_controller.h
index 48b93b7..ee3aa20 100644
--- a/ash/system/chromeos/session/logout_confirmation_controller.h
+++ b/ash/system/chromeos/session/logout_confirmation_controller.h
@@ -18,7 +18,6 @@ class TickClock;
 }
 
 namespace ash {
-namespace internal {
 
 class LogoutConfirmationDialog;
 
@@ -65,7 +64,6 @@ class ASH_EXPORT LogoutConfirmationController : public ShellObserver {
   DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_CONFIRMATION_CONTROLLER_H_
diff --git a/ash/system/chromeos/session/logout_confirmation_controller_unittest.cc b/ash/system/chromeos/session/logout_confirmation_controller_unittest.cc
index 5bbd754..cefb128 100644
--- a/ash/system/chromeos/session/logout_confirmation_controller_unittest.cc
+++ b/ash/system/chromeos/session/logout_confirmation_controller_unittest.cc
@@ -19,8 +19,6 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // A SingleThreadTaskRunner that mocks the current time and allows it to be
@@ -289,5 +287,4 @@ TEST_F(LogoutConfirmationControllerTest, DurationExpiredAfterDeniedRequest) {
   EXPECT_TRUE(log_out_called_);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/logout_confirmation_dialog.cc b/ash/system/chromeos/session/logout_confirmation_dialog.cc
index e795927..80a71e8 100644
--- a/ash/system/chromeos/session/logout_confirmation_dialog.cc
+++ b/ash/system/chromeos/session/logout_confirmation_dialog.cc
@@ -20,8 +20,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kCountdownUpdateIntervalMs = 1000;  // 1 second.
@@ -112,5 +110,4 @@ void LogoutConfirmationDialog::UpdateLabel() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/logout_confirmation_dialog.h b/ash/system/chromeos/session/logout_confirmation_dialog.h
index d88f85d..91e45366 100644
--- a/ash/system/chromeos/session/logout_confirmation_dialog.h
+++ b/ash/system/chromeos/session/logout_confirmation_dialog.h
@@ -16,7 +16,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
 
 class LogoutConfirmationController;
 
@@ -53,7 +52,6 @@ class LogoutConfirmationDialog : public views::DialogDelegateView {
   DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationDialog);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
diff --git a/ash/system/chromeos/session/tray_session_length_limit.cc b/ash/system/chromeos/session/tray_session_length_limit.cc
index 72aeaec..6e1df7a 100644
--- a/ash/system/chromeos/session/tray_session_length_limit.cc
+++ b/ash/system/chromeos/session/tray_session_length_limit.cc
@@ -37,8 +37,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // If the remaining session time falls below this threshold, the user should be
@@ -388,5 +386,4 @@ bool TraySessionLengthLimit::IsTrayViewVisibleForTest() {
   return tray_view_ && tray_view_->visible();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/session/tray_session_length_limit.h b/ash/system/chromeos/session/tray_session_length_limit.h
index 5b31cbb..1c9da17 100644
--- a/ash/system/chromeos/session/tray_session_length_limit.h
+++ b/ash/system/chromeos/session/tray_session_length_limit.h
@@ -14,13 +14,10 @@
 #include "base/timer/timer.h"
 
 namespace ash {
-
 namespace test {
 class TraySessionLengthLimitTest;
 }
 
-namespace internal {
-
 namespace tray {
 class RemainingSessionTimeTrayView;
 }
@@ -71,7 +68,6 @@ class ASH_EXPORT TraySessionLengthLimit : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TraySessionLengthLimit);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SESSION_SESSION_LENGTH_LIMIT_H_
diff --git a/ash/system/chromeos/session/tray_session_length_limit_unittest.cc b/ash/system/chromeos/session/tray_session_length_limit_unittest.cc
index bc3c325..a946fe7 100644
--- a/ash/system/chromeos/session/tray_session_length_limit_unittest.cc
+++ b/ash/system/chromeos/session/tray_session_length_limit_unittest.cc
@@ -26,8 +26,7 @@ class TraySessionLengthLimitTest : public AshTestBase {
     AshTestBase::SetUp();
     SystemTray* system_tray =
         Shell::GetPrimaryRootWindowController()->GetSystemTray();
-    tray_session_length_limit_ = new internal::TraySessionLengthLimit(
-        system_tray);
+    tray_session_length_limit_ = new TraySessionLengthLimit(system_tray);
     system_tray->AddTrayItem(tray_session_length_limit_);
   }
 
@@ -47,7 +46,7 @@ class TraySessionLengthLimitTest : public AshTestBase {
         message_center::MessageCenter::Get()->GetVisibleNotifications();
     for (message_center::NotificationList::Notifications::const_iterator iter =
              notifications.begin(); iter != notifications.end(); ++iter) {
-      if ((*iter)->id() == internal::TraySessionLengthLimit::kNotificationId)
+      if ((*iter)->id() == TraySessionLengthLimit::kNotificationId)
         return *iter;
     }
     return NULL;
@@ -60,10 +59,10 @@ class TraySessionLengthLimitTest : public AshTestBase {
 
   void RemoveNotification() {
     message_center::MessageCenter::Get()->RemoveNotification(
-        internal::TraySessionLengthLimit::kNotificationId, true /* by_user */);
+        TraySessionLengthLimit::kNotificationId, true /* by_user */);
   }
 
-  internal::TraySessionLengthLimit* tray_session_length_limit() {
+  TraySessionLengthLimit* tray_session_length_limit() {
     return tray_session_length_limit_;
   }
 
@@ -73,7 +72,7 @@ class TraySessionLengthLimitTest : public AshTestBase {
 
  private:
   // Weak reference, owned by the SystemTray.
-  internal::TraySessionLengthLimit* tray_session_length_limit_;
+  TraySessionLengthLimit* tray_session_length_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(TraySessionLengthLimitTest);
 };
@@ -84,31 +83,31 @@ TEST_F(TraySessionLengthLimitTest, TrayView) {
 
   // Limit is 15 min.
   UpdateSessionLengthLimitInMin(15);
-  EXPECT_EQ(internal::TraySessionLengthLimit::LIMIT_SET,
+  EXPECT_EQ(TraySessionLengthLimit::LIMIT_SET,
             tray_session_length_limit()->GetLimitState());
   EXPECT_TRUE(IsTrayViewVisible());
 
   // Limit is 3 min.
   UpdateSessionLengthLimitInMin(3);
-  EXPECT_EQ(internal::TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
+  EXPECT_EQ(TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
             tray_session_length_limit()->GetLimitState());
   EXPECT_TRUE(IsTrayViewVisible());
 
   // Nothing left.
   UpdateSessionLengthLimitInMin(0);
-  EXPECT_EQ(internal::TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
+  EXPECT_EQ(TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
             tray_session_length_limit()->GetLimitState());
   EXPECT_TRUE(IsTrayViewVisible());
 
   // Checks the behavior in case the limit goes negative.
   UpdateSessionLengthLimitInMin(-5);
-  EXPECT_EQ(internal::TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
+  EXPECT_EQ(TraySessionLengthLimit::LIMIT_EXPIRING_SOON,
             tray_session_length_limit()->GetLimitState());
   EXPECT_TRUE(IsTrayViewVisible());
 
   // Clears the session length limit, the TrayView should get invisible.
   ClearSessionLengthLimit();
-  ASSERT_EQ(internal::TraySessionLengthLimit::LIMIT_NONE,
+  ASSERT_EQ(TraySessionLengthLimit::LIMIT_NONE,
             tray_session_length_limit()->GetLimitState());
   EXPECT_FALSE(IsTrayViewVisible());
 }
diff --git a/ash/system/chromeos/settings/tray_settings.cc b/ash/system/chromeos/settings/tray_settings.cc
index 34e58d1..af69755 100644
--- a/ash/system/chromeos/settings/tray_settings.cc
+++ b/ash/system/chromeos/settings/tray_settings.cc
@@ -25,8 +25,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 class SettingsDefaultView : public ActionableView,
@@ -46,7 +44,7 @@ class SettingsDefaultView : public ActionableView,
         login_status_ != user::LOGGED_IN_LOCKED) {
       ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
       views::ImageView* icon =
-          new ash::internal::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
+          new ash::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
       icon->SetImage(
           rb.GetImageNamed(IDR_AURA_UBER_TRAY_SETTINGS).ToImageSkia());
       AddChildView(icon);
@@ -60,8 +58,8 @@ class SettingsDefaultView : public ActionableView,
     }
 
     if (PowerStatus::Get()->IsBatteryPresent()) {
-      power_status_view_ = new ash::internal::PowerStatusView(
-          ash::internal::PowerStatusView::VIEW_DEFAULT, power_view_right_align);
+      power_status_view_ = new ash::PowerStatusView(
+          ash::PowerStatusView::VIEW_DEFAULT, power_view_right_align);
       AddChildView(power_status_view_);
       OnPowerStatusChanged();
     }
@@ -71,7 +69,7 @@ class SettingsDefaultView : public ActionableView,
     PowerStatus::Get()->RemoveObserver(this);
   }
 
-  // Overridden from ash::internal::ActionableView.
+  // Overridden from ash::ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE {
     if (login_status_ == user::LOGGED_IN_NONE ||
         login_status_ == user::LOGGED_IN_LOCKED)
@@ -117,7 +115,7 @@ class SettingsDefaultView : public ActionableView,
  private:
   user::LoginStatus login_status_;
   views::Label* label_;
-  ash::internal::PowerStatusView* power_status_view_;
+  ash::PowerStatusView* power_status_view_;
 
   DISALLOW_COPY_AND_ASSIGN(SettingsDefaultView);
  };
@@ -167,5 +165,4 @@ void TraySettings::DestroyDetailedView() {
 void TraySettings::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/settings/tray_settings.h b/ash/system/chromeos/settings/tray_settings.h
index e48aad3..bd5e6d9 100644
--- a/ash/system/chromeos/settings/tray_settings.h
+++ b/ash/system/chromeos/settings/tray_settings.h
@@ -8,8 +8,6 @@
 #include "ash/system/tray/system_tray_item.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class SettingsDefaultView;
 }
@@ -34,7 +32,6 @@ class TraySettings : public SystemTrayItem {
   DISALLOW_COPY_AND_ASSIGN(TraySettings);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SETTINGS_TRAY_SETTINGS_H_
diff --git a/ash/system/chromeos/system_clock_observer.cc b/ash/system/chromeos/system_clock_observer.cc
index c5ab20c..d154d5e 100644
--- a/ash/system/chromeos/system_clock_observer.cc
+++ b/ash/system/chromeos/system_clock_observer.cc
@@ -9,7 +9,6 @@
 #include "chromeos/dbus/dbus_thread_manager.h"
 
 namespace ash {
-namespace internal {
 
 SystemClockObserver::SystemClockObserver() {
   chromeos::DBusThreadManager::Get()->GetSystemClockClient()
@@ -32,5 +31,4 @@ void SystemClockObserver::TimezoneChanged(const icu::TimeZone& timezone) {
   Shell::GetInstance()->system_tray_notifier()->NotifyRefreshClock();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/system_clock_observer.h b/ash/system/chromeos/system_clock_observer.h
index e2625a8..dcc11ee 100644
--- a/ash/system/chromeos/system_clock_observer.h
+++ b/ash/system/chromeos/system_clock_observer.h
@@ -9,7 +9,6 @@
 #include "chromeos/settings/timezone_settings.h"
 
 namespace ash {
-namespace internal {
 
 class SystemClockObserver
     : public chromeos::SystemClockClient::Observer,
@@ -28,7 +27,6 @@ class SystemClockObserver
   DISALLOW_COPY_AND_ASSIGN(SystemClockObserver);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SYSTEM_CLOCK_OBSERVER_H_
diff --git a/ash/system/chromeos/tray_caps_lock.cc b/ash/system/chromeos/tray_caps_lock.cc
index 163634f..7142a8e 100644
--- a/ash/system/chromeos/tray_caps_lock.cc
+++ b/ash/system/chromeos/tray_caps_lock.cc
@@ -23,8 +23,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 bool CapsLockIsEnabled() {
@@ -216,5 +214,4 @@ void TrayCapsLock::DestroyDetailedView() {
   detailed_ = NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/tray_caps_lock.h b/ash/system/chromeos/tray_caps_lock.h
index 1ccd0f1..f24ad6b 100644
--- a/ash/system/chromeos/tray_caps_lock.h
+++ b/ash/system/chromeos/tray_caps_lock.h
@@ -14,8 +14,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
-
 class CapsLockDefaultView;
 
 class TrayCapsLock : public TrayImageItem,
@@ -46,7 +44,6 @@ class TrayCapsLock : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayCapsLock);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_TRAY_CAPS_LOCK_H_
diff --git a/ash/system/chromeos/tray_display.cc b/ash/system/chromeos/tray_display.cc
index 8b627b7..b5814c1 100644
--- a/ash/system/chromeos/tray_display.cc
+++ b/ash/system/chromeos/tray_display.cc
@@ -31,7 +31,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 DisplayManager* GetDisplayManager() {
@@ -130,7 +129,7 @@ void OpenSettings() {
 
 const char TrayDisplay::kNotificationId[] = "chrome://settings/display";
 
-class DisplayView : public internal::ActionableView {
+class DisplayView : public ActionableView {
  public:
   explicit DisplayView() {
     SetLayoutManager(new views::BoxLayout(
@@ -139,7 +138,7 @@ class DisplayView : public internal::ActionableView {
         kTrayPopupPaddingBetweenItems));
 
     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
-    image_ = new internal::FixedSizedImageView(0, kTrayPopupItemHeight);
+    image_ = new FixedSizedImageView(0, kTrayPopupItemHeight);
     image_->SetImage(
         bundle.GetImageNamed(IDR_AURA_UBER_TRAY_DISPLAY).ToImageSkia());
     AddChildView(image_);
@@ -436,5 +435,4 @@ bool TrayDisplay::GetAccessibleStateForTesting(ui::AXViewState* state) {
   return false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/tray_display.h b/ash/system/chromeos/tray_display.h
index e111d7d..fc01ba2 100644
--- a/ash/system/chromeos/tray_display.h
+++ b/ash/system/chromeos/tray_display.h
@@ -15,13 +15,12 @@
 #include "ui/views/view.h"
 
 namespace ash {
+class DisplayView;
+
 namespace test {
 class AshTestBase;
 }
 
-namespace internal {
-class DisplayView;
-
 class ASH_EXPORT TrayDisplay : public SystemTrayItem,
                                public DisplayController::Observer {
  public:
@@ -74,7 +73,6 @@ class ASH_EXPORT TrayDisplay : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayDisplay);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_TRAY_DISPLAY_H_
diff --git a/ash/system/chromeos/tray_display_unittest.cc b/ash/system/chromeos/tray_display_unittest.cc
index 0f3609b..5689c84 100644
--- a/ash/system/chromeos/tray_display_unittest.cc
+++ b/ash/system/chromeos/tray_display_unittest.cc
@@ -23,7 +23,6 @@
 #include "ui/views/controls/label.h"
 
 namespace ash {
-namespace internal {
 
 base::string16 GetTooltipText(const base::string16& headline,
                               const base::string16& name1,
@@ -573,5 +572,4 @@ TEST_F(TrayDisplayTest, UpdateAfterSuppressDisplayNotification) {
       GetDisplayNotificationText());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/tray_tracing.cc b/ash/system/chromeos/tray_tracing.cc
index eddeac7..907b51b 100644
--- a/ash/system/chromeos/tray_tracing.cc
+++ b/ash/system/chromeos/tray_tracing.cc
@@ -21,11 +21,9 @@
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
-class DefaultTracingView : public internal::ActionableView {
+class DefaultTracingView : public ActionableView {
  public:
   DefaultTracingView() {
     SetLayoutManager(new views::BoxLayout(
@@ -34,7 +32,7 @@ class DefaultTracingView : public internal::ActionableView {
         kTrayPopupPaddingBetweenItems));
 
     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
-    image_ = new internal::FixedSizedImageView(0, kTrayPopupItemHeight);
+    image_ = new FixedSizedImageView(0, kTrayPopupItemHeight);
     image_->SetImage(
         bundle.GetImageNamed(IDR_AURA_UBER_TRAY_TRACING).ToImageSkia());
     AddChildView(image_);
@@ -64,7 +62,7 @@ class DefaultTracingView : public internal::ActionableView {
 }  // namespace tray
 
 ////////////////////////////////////////////////////////////////////////////////
-// ash::internal::TrayTracing
+// ash::TrayTracing
 
 TrayTracing::TrayTracing(SystemTray* system_tray)
     : TrayImageItem(system_tray, IDR_AURA_UBER_TRAY_TRACING),
@@ -109,5 +107,4 @@ void TrayTracing::OnTracingModeChanged(bool value) {
   SetTrayIconVisible(value);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/tray_tracing.h b/ash/system/chromeos/tray_tracing.h
index f9491e1..683b326 100644
--- a/ash/system/chromeos/tray_tracing.h
+++ b/ash/system/chromeos/tray_tracing.h
@@ -22,8 +22,6 @@ class ASH_EXPORT TracingObserver {
   virtual void OnTracingModeChanged(bool value) = 0;
 };
 
-namespace internal {
-
 // This is the item that displays when users enable performance tracing at
 // chrome://slow.  It alerts them that this mode is running, and provides an
 // easy way to open the page to disable it.
@@ -51,7 +49,6 @@ class TrayTracing : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayTracing);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRACING_H_
diff --git a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc
index f1a9c5c..f064b82 100644
--- a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc
+++ b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc
@@ -19,8 +19,6 @@
 #include "ui/views/controls/button/image_button.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 class VirtualKeyboardButton : public views::ImageButton {
@@ -116,5 +114,4 @@ void VirtualKeyboardTray::OnAccessibilityModeChanged(
       IsVirtualKeyboardEnabled());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
index a74cb9c..8f0e2bb 100644
--- a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
+++ b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
@@ -16,8 +16,6 @@ class ImageButton;
 }
 
 namespace ash {
-namespace internal {
-
 class StatusAreaWidget;
 
 class VirtualKeyboardTray : public TrayBackgroundView,
@@ -49,7 +47,6 @@ class VirtualKeyboardTray : public TrayBackgroundView,
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardTray);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_TRAY_H_
diff --git a/ash/system/date/date_default_view.cc b/ash/system/date/date_default_view.cc
index 33a0f4f..e72e048 100644
--- a/ash/system/date/date_default_view.cc
+++ b/ash/system/date/date_default_view.cc
@@ -27,7 +27,6 @@ const int kPaddingVertical = 19;
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 DateDefaultView::DateDefaultView(ash::user::LoginStatus login)
     : help_(NULL),
@@ -118,5 +117,4 @@ void DateDefaultView::ButtonPressed(views::Button* sender,
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/date/date_default_view.h b/ash/system/date/date_default_view.h
index 3cfe42c..2b80b02 100644
--- a/ash/system/date/date_default_view.h
+++ b/ash/system/date/date_default_view.h
@@ -12,8 +12,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class DateView;
 }  // namespace tray
@@ -45,7 +43,6 @@ class ASH_EXPORT DateDefaultView : public views::View,
   DISALLOW_COPY_AND_ASSIGN(DateDefaultView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_DATE_DATE_DEFAULT_VIEW_H_
diff --git a/ash/system/date/date_view.cc b/ash/system/date/date_view.cc
index 9453837..26f910d 100644
--- a/ash/system/date/date_view.cc
+++ b/ash/system/date/date_view.cc
@@ -24,9 +24,7 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace tray {
-
 namespace {
 
 // Amount of slop to add into the timer to make sure we're into the next minute
@@ -314,5 +312,4 @@ void TimeView::SetupLabel(views::Label* label) {
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/date/date_view.h b/ash/system/date/date_view.h
index ed7fadb..7d03a9a 100644
--- a/ash/system/date/date_view.h
+++ b/ash/system/date/date_view.h
@@ -18,7 +18,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 // Abstract base class containing common updating and layout code for the
@@ -131,7 +130,6 @@ class ASH_EXPORT TimeView : public BaseDateTimeView {
 };
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_DATE_DATE_VIEW_H_
diff --git a/ash/system/date/date_view_unittest.cc b/ash/system/date/date_view_unittest.cc
index 931d220..4bada63 100644
--- a/ash/system/date/date_view_unittest.cc
+++ b/ash/system/date/date_view_unittest.cc
@@ -8,7 +8,6 @@
 #include "ui/views/controls/label.h"
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 class TimeViewTest : public ash::test::AshTestBase {
@@ -62,5 +61,4 @@ TEST_F(TimeViewTest, Basics) {
 }
 
 }  // namespace tray
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/date/tray_date.cc b/ash/system/date/tray_date.cc
index ac6754a..156d355 100644
--- a/ash/system/date/tray_date.cc
+++ b/ash/system/date/tray_date.cc
@@ -16,7 +16,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 
 TrayDate::TrayDate(SystemTray* system_tray)
     : SystemTrayItem(system_tray),
@@ -113,5 +112,4 @@ void TrayDate::Refresh() {
     time_tray_->UpdateText();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/date/tray_date.h b/ash/system/date/tray_date.h
index 6ba6e03..90c02e2 100644
--- a/ash/system/date/tray_date.h
+++ b/ash/system/date/tray_date.h
@@ -15,12 +15,10 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
-
+class DateDefaultView;
 #if defined(OS_CHROMEOS)
 class SystemClockObserver;
 #endif
-class DateDefaultView;
 
 namespace tray {
 class TimeView;
@@ -71,7 +69,6 @@ class ASH_EXPORT TrayDate : public SystemTrayItem, public ClockObserver {
   DISALLOW_COPY_AND_ASSIGN(TrayDate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_DATE_TRAY_DATE_H_
diff --git a/ash/system/drive/tray_drive.cc b/ash/system/drive/tray_drive.cc
index 40a64c3..54e19e3 100644
--- a/ash/system/drive/tray_drive.cc
+++ b/ash/system/drive/tray_drive.cc
@@ -36,9 +36,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-
-namespace internal {
-
 namespace {
 
 const int kSidePadding = 8;
@@ -515,5 +512,4 @@ void TrayDrive::HideIfNoOperations() {
     detailed_->Update(&empty_list);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/drive/tray_drive.h b/ash/system/drive/tray_drive.h
index 6550fde..3fea2b5 100644
--- a/ash/system/drive/tray_drive.h
+++ b/ash/system/drive/tray_drive.h
@@ -14,8 +14,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class DriveTrayView;
 class DriveDefaultView;
@@ -52,7 +50,6 @@ class TrayDrive : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayDrive);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_DRIVE_TRAY_DRIVE_H_
diff --git a/ash/system/ime/tray_ime.cc b/ash/system/ime/tray_ime.cc
index a2dafa4..b1ffb28 100644
--- a/ash/system/ime/tray_ime.cc
+++ b/ash/system/ime/tray_ime.cc
@@ -32,7 +32,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace tray {
 
 class IMEDefaultView : public TrayItemMore {
@@ -270,5 +269,4 @@ void TrayIME::OnIMERefresh() {
     detailed_->Update(list, property_list);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/ime/tray_ime.h b/ash/system/ime/tray_ime.h
index 06c81a5..0f46192 100644
--- a/ash/system/ime/tray_ime.h
+++ b/ash/system/ime/tray_ime.h
@@ -13,11 +13,8 @@ class Label;
 }
 
 namespace ash {
-
 struct IMEInfo;
 
-namespace internal {
-
 namespace tray {
 class IMEDefaultView;
 class IMEDetailedView;
@@ -56,7 +53,6 @@ class TrayIME : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayIME);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_IME_TRAY_IME_H_
diff --git a/ash/system/locale/locale_notification_controller.cc b/ash/system/locale/locale_notification_controller.cc
index 419baaf..281b735 100644
--- a/ash/system/locale/locale_notification_controller.cc
+++ b/ash/system/locale/locale_notification_controller.cc
@@ -20,7 +20,6 @@
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
 namespace {
 
 const char kLocaleChangeNotificationId[] = "chrome://settings/locale";
@@ -125,5 +124,4 @@ void LocaleNotificationController::OnLocaleChanged(
   message_center::MessageCenter::Get()->AddNotification(notification.Pass());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/locale/locale_notification_controller.h b/ash/system/locale/locale_notification_controller.h
index d23895c..6ec3aef 100644
--- a/ash/system/locale/locale_notification_controller.h
+++ b/ash/system/locale/locale_notification_controller.h
@@ -12,7 +12,6 @@
 #include "base/compiler_specific.h"
 
 namespace ash {
-namespace internal {
 
 // Observes the locale change and creates rich notification for the change.
 class LocaleNotificationController : public LocaleObserver {
@@ -35,7 +34,6 @@ class LocaleNotificationController : public LocaleObserver {
   DISALLOW_COPY_AND_ASSIGN(LocaleNotificationController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_LOCALE_LOCALE_NOTIFICATION_CONTROLLER_H_
diff --git a/ash/system/overview/overview_button_tray.cc b/ash/system/overview/overview_button_tray.cc
index edcf6e5..b18ee1a 100644
--- a/ash/system/overview/overview_button_tray.cc
+++ b/ash/system/overview/overview_button_tray.cc
@@ -29,10 +29,8 @@ const int kVerticalShelfVerticalPadding = 5;
 
 namespace ash {
 
-OverviewButtonTray::OverviewButtonTray(
-    internal::StatusAreaWidget* status_area_widget)
-    : TrayBackgroundView(status_area_widget),
-      icon_(NULL) {
+OverviewButtonTray::OverviewButtonTray(StatusAreaWidget* status_area_widget)
+    : TrayBackgroundView(status_area_widget), icon_(NULL) {
   SetContentsBackground();
 
   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
diff --git a/ash/system/overview/overview_button_tray.h b/ash/system/overview/overview_button_tray.h
index 9007f0a..d988626 100644
--- a/ash/system/overview/overview_button_tray.h
+++ b/ash/system/overview/overview_button_tray.h
@@ -20,24 +20,24 @@ namespace ash {
 // This hosts a ShellObserver that listens for the activation of Maximize Mode
 // This tray will only be visible while in this state. This tray does not
 // provide any bubble view windows.
-class ASH_EXPORT OverviewButtonTray : public internal::TrayBackgroundView,
+class ASH_EXPORT OverviewButtonTray : public TrayBackgroundView,
                                       public ShellObserver {
  public:
-  explicit OverviewButtonTray(internal::StatusAreaWidget* status_area_widget);
+  explicit OverviewButtonTray(StatusAreaWidget* status_area_widget);
   virtual ~OverviewButtonTray();
 
   // Updates the tray's visibility based on the LoginStatus and the current
   // state of MaximizeMode
   virtual void UpdateAfterLoginStatusChange(user::LoginStatus status);
 
-  // internal::ActionableView:
+  // ActionableView:
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 
   // ShellObserver:
   virtual void OnMaximizeModeStarted() OVERRIDE;
   virtual void OnMaximizeModeEnded() OVERRIDE;
 
-  // internal::TrayBackgroundView:
+  // TrayBackgroundView:
   virtual bool ClickedOutsideBubble() OVERRIDE;
   virtual base::string16 GetAccessibleNameForTray() OVERRIDE;
   virtual void HideBubbleWithView(
diff --git a/ash/system/overview/overview_button_tray_unittest.cc b/ash/system/overview/overview_button_tray_unittest.cc
index b0cc6d0..ec2f22d 100644
--- a/ash/system/overview/overview_button_tray_unittest.cc
+++ b/ash/system/overview/overview_button_tray_unittest.cc
@@ -29,7 +29,7 @@ OverviewButtonTray* GetTray() {
 }
 
 OverviewButtonTray* GetSecondaryTray() {
-  internal::RootWindowController* primary_controller =
+  RootWindowController* primary_controller =
       Shell::GetPrimaryRootWindowController();
   Shell::RootWindowControllerList controllers =
       Shell::GetAllRootWindowControllers();
diff --git a/ash/system/status_area_widget.cc b/ash/system/status_area_widget.cc
index 0b2f7d0..ac2cffb 100644
--- a/ash/system/status_area_widget.cc
+++ b/ash/system/status_area_widget.cc
@@ -28,12 +28,10 @@
 
 namespace ash {
 
-namespace internal {
-
 const char StatusAreaWidget::kNativeViewName[] = "StatusAreaWidget";
 
 StatusAreaWidget::StatusAreaWidget(aura::Window* status_container)
-    : status_area_widget_delegate_(new internal::StatusAreaWidgetDelegate),
+    : status_area_widget_delegate_(new StatusAreaWidgetDelegate),
       overview_button_tray_(NULL),
       system_tray_(NULL),
       web_notification_tray_(NULL),
@@ -191,5 +189,4 @@ void StatusAreaWidget::UpdateAfterLoginStatusChange(
     overview_button_tray_->UpdateAfterLoginStatusChange(login_status);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/status_area_widget.h b/ash/system/status_area_widget.h
index ad1c6dd..41ea72e 100644
--- a/ash/system/status_area_widget.h
+++ b/ash/system/status_area_widget.h
@@ -11,15 +11,11 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-
 class OverviewButtonTray;
 class ShellDelegate;
+class StatusAreaWidgetDelegate;
 class SystemTray;
 class WebNotificationTray;
-
-namespace internal {
-
-class StatusAreaWidgetDelegate;
 #if defined(OS_CHROMEOS)
 class LogoutButtonTray;
 class VirtualKeyboardTray;
@@ -50,7 +46,7 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
   // notification tray.
   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
 
-  internal::StatusAreaWidgetDelegate* status_area_widget_delegate() {
+  StatusAreaWidgetDelegate* status_area_widget_delegate() {
     return status_area_widget_delegate_;
   }
   SystemTray* system_tray() { return system_tray_; }
@@ -84,7 +80,7 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
   void AddOverviewButtonTray();
 
   // Weak pointers to View classes that are parented to StatusAreaWidget:
-  internal::StatusAreaWidgetDelegate* status_area_widget_delegate_;
+  StatusAreaWidgetDelegate* status_area_widget_delegate_;
   OverviewButtonTray* overview_button_tray_;
   SystemTray* system_tray_;
   WebNotificationTray* web_notification_tray_;
@@ -97,7 +93,6 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidget);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_H_
diff --git a/ash/system/status_area_widget_delegate.cc b/ash/system/status_area_widget_delegate.cc
index 72a289d..cdac5cb 100644
--- a/ash/system/status_area_widget_delegate.cc
+++ b/ash/system/status_area_widget_delegate.cc
@@ -20,7 +20,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kStatusTrayOffsetFromScreenEdge = 4;
@@ -154,5 +153,4 @@ void StatusAreaWidgetDelegate::UpdateWidgetSize() {
     GetWidget()->SetSize(GetPreferredSize());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/status_area_widget_delegate.h b/ash/system/status_area_widget_delegate.h
index 751c31b..8dd3202 100644
--- a/ash/system/status_area_widget_delegate.h
+++ b/ash/system/status_area_widget_delegate.h
@@ -13,8 +13,6 @@
 #include "ui/views/widget/widget_delegate.h"
 
 namespace ash {
-namespace internal {
-
 class FocusCycler;
 
 class ASH_EXPORT StatusAreaWidgetDelegate : public views::AccessiblePaneView,
@@ -64,7 +62,6 @@ class ASH_EXPORT StatusAreaWidgetDelegate : public views::AccessiblePaneView,
   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_
diff --git a/ash/system/tray/actionable_view.cc b/ash/system/tray/actionable_view.cc
index 6e55325..dc26cde 100644
--- a/ash/system/tray/actionable_view.cc
+++ b/ash/system/tray/actionable_view.cc
@@ -9,7 +9,6 @@
 #include "ui/gfx/canvas.h"
 
 namespace ash {
-namespace internal {
 
 // static
 const char ActionableView::kViewClassName[] = "tray/ActionableView";
@@ -91,5 +90,4 @@ void ActionableView::OnGestureEvent(ui::GestureEvent* event) {
     event->SetHandled();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/actionable_view.h b/ash/system/tray/actionable_view.h
index cef83fe..c5ccbe3 100644
--- a/ash/system/tray/actionable_view.h
+++ b/ash/system/tray/actionable_view.h
@@ -11,7 +11,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 // A focusable view that performs an action when user clicks on it, or presses
 // enter or space when focused. Note that the action is triggered on mouse-up,
@@ -62,7 +61,6 @@ class ASH_EXPORT ActionableView : public views::View {
   DISALLOW_COPY_AND_ASSIGN(ActionableView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_ACTIONABLE_VIEW_H_
diff --git a/ash/system/tray/fixed_sized_image_view.cc b/ash/system/tray/fixed_sized_image_view.cc
index d0d49b9..9eb9497 100644
--- a/ash/system/tray/fixed_sized_image_view.cc
+++ b/ash/system/tray/fixed_sized_image_view.cc
@@ -5,7 +5,6 @@
 #include "ash/system/tray/fixed_sized_image_view.h"
 
 namespace ash {
-namespace internal {
 
 FixedSizedImageView::FixedSizedImageView(int width, int height)
     : width_(width),
@@ -23,5 +22,4 @@ gfx::Size FixedSizedImageView::GetPreferredSize() {
                    height_ ? height_ : size.height());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/fixed_sized_image_view.h b/ash/system/tray/fixed_sized_image_view.h
index 1e5c7cd..b2b00ce 100644
--- a/ash/system/tray/fixed_sized_image_view.h
+++ b/ash/system/tray/fixed_sized_image_view.h
@@ -10,7 +10,6 @@
 #include "ui/views/controls/image_view.h"
 
 namespace ash {
-namespace internal {
 
 // An image view with a specified width and height (kTrayPopupDetailsIconWidth).
 // If the specified width or height is zero, then the image size is used for
@@ -29,7 +28,6 @@ class FixedSizedImageView : public views::ImageView {
   DISALLOW_COPY_AND_ASSIGN(FixedSizedImageView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_FIXED_SIZED_IMAGE_VIEW_H_
diff --git a/ash/system/tray/fixed_sized_scroll_view.cc b/ash/system/tray/fixed_sized_scroll_view.cc
index d3fff9ad..c7a0394 100644
--- a/ash/system/tray/fixed_sized_scroll_view.cc
+++ b/ash/system/tray/fixed_sized_scroll_view.cc
@@ -5,7 +5,6 @@
 #include "ash/system/tray/fixed_sized_scroll_view.h"
 
 namespace ash {
-namespace internal {
 
 FixedSizedScrollView::FixedSizedScrollView() {
   set_notify_enter_exit_on_child(true);
@@ -53,5 +52,4 @@ void FixedSizedScrollView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
   contents()->SetBoundsRect(bounds);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/fixed_sized_scroll_view.h b/ash/system/tray/fixed_sized_scroll_view.h
index aff53c2..d091028 100644
--- a/ash/system/tray/fixed_sized_scroll_view.h
+++ b/ash/system/tray/fixed_sized_scroll_view.h
@@ -10,7 +10,6 @@
 #include "ui/views/controls/scroll_view.h"
 
 namespace ash {
-namespace internal {
 
 // A custom scroll-view that has a specified dimension.
 class FixedSizedScrollView : public views::ScrollView {
@@ -40,7 +39,6 @@ class FixedSizedScrollView : public views::ScrollView {
   DISALLOW_COPY_AND_ASSIGN(FixedSizedScrollView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_FIXED_SIZED_SCROLL_VIEW_H_
diff --git a/ash/system/tray/hover_highlight_view.cc b/ash/system/tray/hover_highlight_view.cc
index e78944c..ac445b6 100644
--- a/ash/system/tray/hover_highlight_view.cc
+++ b/ash/system/tray/hover_highlight_view.cc
@@ -25,7 +25,6 @@ const int kCheckLabelPadding = 4;
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 HoverHighlightView::HoverHighlightView(ViewClickListener* listener)
     : listener_(listener),
@@ -186,5 +185,4 @@ void HoverHighlightView::OnFocus() {
   ActionableView::OnFocus();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/hover_highlight_view.h b/ash/system/tray/hover_highlight_view.h
index 0ca9358f..17b50ba 100644
--- a/ash/system/tray/hover_highlight_view.h
+++ b/ash/system/tray/hover_highlight_view.h
@@ -15,8 +15,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
-
 class ViewClickListener;
 
 // A view that changes background color on hover, and triggers a callback in the
@@ -87,7 +85,6 @@ class HoverHighlightView : public ActionableView {
   DISALLOW_COPY_AND_ASSIGN(HoverHighlightView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_HOVER_HIGHLIGHT_VIEW_H_
diff --git a/ash/system/tray/special_popup_row.cc b/ash/system/tray/special_popup_row.cc
index f8887c3..0f6899d 100644
--- a/ash/system/tray/special_popup_row.cc
+++ b/ash/system/tray/special_popup_row.cc
@@ -19,8 +19,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kIconPaddingLeft = 5;
@@ -130,5 +128,4 @@ void SpecialPopupRow::Layout() {
   content_->SetBoundsRect(bounds);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/special_popup_row.h b/ash/system/tray/special_popup_row.h
index ee068e4..7f4ea1d 100644
--- a/ash/system/tray/special_popup_row.h
+++ b/ash/system/tray/special_popup_row.h
@@ -13,8 +13,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
-
 class ThrobberView;
 class TrayItemView;
 class TrayPopupHeaderButton;
@@ -48,7 +46,6 @@ class SpecialPopupRow : public views::View {
   DISALLOW_COPY_AND_ASSIGN(SpecialPopupRow);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
diff --git a/ash/system/tray/system_tray.cc b/ash/system/tray/system_tray.cc
index 5c1189d..18cb451 100644
--- a/ash/system/tray/system_tray.cc
+++ b/ash/system/tray/system_tray.cc
@@ -73,18 +73,14 @@ namespace ash {
 // The minimum width of the system tray menu width.
 const int kMinimumSystemTrayMenuWidth = 300;
 
-namespace internal {
-
 // Class to initialize and manage the SystemTrayBubble and TrayBubbleWrapper
 // instances for a bubble.
 
 class SystemBubbleWrapper {
  public:
   // Takes ownership of |bubble|.
-  explicit SystemBubbleWrapper(internal::SystemTrayBubble* bubble)
-      : bubble_(bubble),
-        is_persistent_(false) {
-  }
+  explicit SystemBubbleWrapper(SystemTrayBubble* bubble)
+      : bubble_(bubble), is_persistent_(false) {}
 
   // Initializes the bubble view and creates |bubble_wrapper_|.
   void InitView(TrayBackgroundView* tray,
@@ -95,8 +91,7 @@ class SystemBubbleWrapper {
     user::LoginStatus login_status =
         Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus();
     bubble_->InitView(anchor, login_status, init_params);
-    bubble_wrapper_.reset(
-        new internal::TrayBubbleWrapper(tray, bubble_->bubble_view()));
+    bubble_wrapper_.reset(new TrayBubbleWrapper(tray, bubble_->bubble_view()));
     if (ash::switches::UseAlternateShelfLayout()) {
       // The system bubble should not have an arrow.
       bubble_->bubble_view()->SetArrowPaintType(
@@ -120,21 +115,18 @@ class SystemBubbleWrapper {
   bool is_persistent() const { return is_persistent_; }
 
  private:
-  scoped_ptr<internal::SystemTrayBubble> bubble_;
-  scoped_ptr<internal::TrayBubbleWrapper> bubble_wrapper_;
+  scoped_ptr<SystemTrayBubble> bubble_;
+  scoped_ptr<TrayBubbleWrapper> bubble_wrapper_;
   bool is_persistent_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemBubbleWrapper);
 };
 
-}  // namespace internal
 
 // SystemTray
 
-using internal::SystemTrayBubble;
-
-SystemTray::SystemTray(internal::StatusAreaWidget* status_area_widget)
-    : internal::TrayBackgroundView(status_area_widget),
+SystemTray::SystemTray(StatusAreaWidget* status_area_widget)
+    : TrayBackgroundView(status_area_widget),
       items_(),
       default_bubble_height_(0),
       hide_notifications_(false),
@@ -156,13 +148,13 @@ SystemTray::~SystemTray() {
 }
 
 void SystemTray::InitializeTrayItems(SystemTrayDelegate* delegate) {
-  internal::TrayBackgroundView::Initialize();
+  TrayBackgroundView::Initialize();
   CreateItems(delegate);
 }
 
 void SystemTray::CreateItems(SystemTrayDelegate* delegate) {
 #if defined(OS_CHROMEOS)
-  AddTrayItem(new internal::TraySessionLengthLimit(this));
+  AddTrayItem(new TraySessionLengthLimit(this));
 #endif
 #if !defined(OS_WIN)
   // Create user items for each possible user.
@@ -170,52 +162,51 @@ void SystemTray::CreateItems(SystemTrayDelegate* delegate) {
   int maximum_user_profiles =
           shell->session_state_delegate()->GetMaximumNumberOfLoggedInUsers();
   for (int i = 0; i < maximum_user_profiles; i++)
-    AddTrayItem(new internal::TrayUser(this, i));
+    AddTrayItem(new TrayUser(this, i));
 
   if (maximum_user_profiles > 1) {
     // Add a special double line separator between users and the rest of the
     // menu if more then one user is logged in.
-    AddTrayItem(new internal::TrayUserSeparator(this));
+    AddTrayItem(new TrayUserSeparator(this));
   }
 #endif
 
-  tray_accessibility_ = new internal::TrayAccessibility(this);
-  tray_date_ = new internal::TrayDate(this);
+  tray_accessibility_ = new TrayAccessibility(this);
+  tray_date_ = new TrayDate(this);
 
 #if defined(OS_CHROMEOS)
-  AddTrayItem(new internal::TrayEnterprise(this));
-  AddTrayItem(new internal::TrayLocallyManagedUser(this));
-  AddTrayItem(new internal::TrayIME(this));
+  AddTrayItem(new TrayEnterprise(this));
+  AddTrayItem(new TrayLocallyManagedUser(this));
+  AddTrayItem(new TrayIME(this));
   AddTrayItem(tray_accessibility_);
-  AddTrayItem(new internal::TrayTracing(this));
-  AddTrayItem(
-      new internal::TrayPower(this, message_center::MessageCenter::Get()));
-  AddTrayItem(new internal::TrayNetwork(this));
-  AddTrayItem(new internal::TrayVPN(this));
-  AddTrayItem(new internal::TraySms(this));
-  AddTrayItem(new internal::TrayBluetooth(this));
-  AddTrayItem(new internal::TrayDrive(this));
-  AddTrayItem(new internal::TrayDisplay(this));
-  AddTrayItem(new internal::ScreenCaptureTrayItem(this));
-  AddTrayItem(new internal::ScreenShareTrayItem(this));
-  AddTrayItem(new internal::TrayAudioChromeOs(this));
-  AddTrayItem(new internal::TrayBrightness(this));
-  AddTrayItem(new internal::TrayCapsLock(this));
-  AddTrayItem(new internal::TraySettings(this));
-  AddTrayItem(new internal::TrayUpdate(this));
+  AddTrayItem(new TrayTracing(this));
+  AddTrayItem(new TrayPower(this, message_center::MessageCenter::Get()));
+  AddTrayItem(new TrayNetwork(this));
+  AddTrayItem(new TrayVPN(this));
+  AddTrayItem(new TraySms(this));
+  AddTrayItem(new TrayBluetooth(this));
+  AddTrayItem(new TrayDrive(this));
+  AddTrayItem(new TrayDisplay(this));
+  AddTrayItem(new ScreenCaptureTrayItem(this));
+  AddTrayItem(new ScreenShareTrayItem(this));
+  AddTrayItem(new TrayAudioChromeOs(this));
+  AddTrayItem(new TrayBrightness(this));
+  AddTrayItem(new TrayCapsLock(this));
+  AddTrayItem(new TraySettings(this));
+  AddTrayItem(new TrayUpdate(this));
   AddTrayItem(tray_date_);
 #elif defined(OS_WIN)
   AddTrayItem(tray_accessibility_);
   if (media::CoreAudioUtil::IsSupported())
-    AddTrayItem(new internal::TrayAudioWin(this));
-  AddTrayItem(new internal::TrayUpdate(this));
+    AddTrayItem(new TrayAudioWin(this));
+  AddTrayItem(new TrayUpdate(this));
   AddTrayItem(tray_date_);
 #elif defined(OS_LINUX)
-  AddTrayItem(new internal::TrayIME(this));
+  AddTrayItem(new TrayIME(this));
   AddTrayItem(tray_accessibility_);
-  AddTrayItem(new internal::TrayBluetooth(this));
-  AddTrayItem(new internal::TrayDrive(this));
-  AddTrayItem(new internal::TrayUpdate(this));
+  AddTrayItem(new TrayBluetooth(this));
+  AddTrayItem(new TrayDrive(this));
+  AddTrayItem(new TrayUpdate(this));
   AddTrayItem(tray_date_);
 #endif
 
@@ -348,7 +339,7 @@ bool SystemTray::HasNotificationBubble() const {
   return notification_bubble_.get() != NULL;
 }
 
-internal::SystemTrayBubble* SystemTray::GetSystemBubble() {
+SystemTrayBubble* SystemTray::GetSystemBubble() {
   if (!system_bubble_)
     return NULL;
   return system_bubble_->bubble();
@@ -501,7 +492,7 @@ void SystemTray::ShowItems(const std::vector<SystemTrayItem*>& items,
     if (items.size() == 1 && items[0]->ShouldHideArrow())
       init_params.arrow_paint_type = views::BubbleBorder::PAINT_TRANSPARENT;
     SystemTrayBubble* bubble = new SystemTrayBubble(this, items, bubble_type);
-    system_bubble_.reset(new internal::SystemBubbleWrapper(bubble));
+    system_bubble_.reset(new SystemBubbleWrapper(bubble));
     system_bubble_->InitView(this, tray_container(), &init_params, persistent);
   }
   // Save height of default view for creating detailed views directly.
@@ -558,8 +549,7 @@ void SystemTray::UpdateNotificationBubble() {
       ash::switches::UseAlternateShelfLayout();
   init_params.arrow_color = kBackgroundColor;
   init_params.arrow_offset = GetTrayXOffset(notification_items_[0]);
-  notification_bubble_.reset(
-      new internal::SystemBubbleWrapper(notification_bubble));
+  notification_bubble_.reset(new SystemBubbleWrapper(notification_bubble));
   notification_bubble_->InitView(this, anchor, &init_params, false);
 
   if (notification_bubble->bubble_view()->child_count() == 0) {
@@ -598,7 +588,7 @@ void SystemTray::UpdateWebNotifications() {
 void SystemTray::SetShelfAlignment(ShelfAlignment alignment) {
   if (alignment == shelf_alignment())
     return;
-  internal::TrayBackgroundView::SetShelfAlignment(alignment);
+  TrayBackgroundView::SetShelfAlignment(alignment);
   UpdateAfterShelfAlignmentChange(alignment);
   // Destroy any existing bubble so that it is rebuilt correctly.
   CloseSystemBubbleAndDeactivateSystemTray();
@@ -686,9 +676,7 @@ views::View* SystemTray::GetTrayItemViewForTest(SystemTrayItem* item) {
   return it == tray_item_map_.end() ? NULL : it->second;
 }
 
-internal::TrayDate* SystemTray::GetTrayDateForTesting() const {
-  return tray_date_;
-}
+TrayDate* SystemTray::GetTrayDateForTesting() const { return tray_date_; }
 
 bool SystemTray::PerformAction(const ui::Event& event) {
   // If we're already showing the default view, hide it; otherwise, show it
diff --git a/ash/system/tray/system_tray.h b/ash/system/tray/system_tray.h
index 7c5aa4f..3370c7d 100644
--- a/ash/system/tray/system_tray.h
+++ b/ash/system/tray/system_tray.h
@@ -20,16 +20,12 @@
 #include <vector>
 
 namespace ash {
-
+class SystemBubbleWrapper;
 class SystemTrayDelegate;
 class SystemTrayItem;
-
-namespace internal {
-class SystemBubbleWrapper;
 class TrayAccessibility;
 class TrayDate;
 class TrayUser;
-}
 
 // There are different methods for creating bubble views.
 enum BubbleCreationType {
@@ -37,10 +33,10 @@ enum BubbleCreationType {
   BUBBLE_USE_EXISTING,  // Uses any existing bubble, or creates a new one.
 };
 
-class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
+class ASH_EXPORT SystemTray : public TrayBackgroundView,
                               public views::TrayBubbleView::Delegate {
  public:
-  explicit SystemTray(internal::StatusAreaWidget* status_area_widget);
+  explicit SystemTray(StatusAreaWidget* status_area_widget);
   virtual ~SystemTray();
 
   // Calls TrayBackgroundView::Initialize(), creates the tray items, and
@@ -102,10 +98,10 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
   bool HasNotificationBubble() const;
 
   // Returns true if the system_bubble_ exists and is of type |type|.
-  bool HasSystemBubbleType(internal::SystemTrayBubble::BubbleType type);
+  bool HasSystemBubbleType(SystemTrayBubble::BubbleType type);
 
   // Returns a pointer to the system bubble or NULL if none.
-  internal::SystemTrayBubble* GetSystemBubble();
+  SystemTrayBubble* GetSystemBubble();
 
   // Returns true if any bubble is visible.
   bool IsAnyBubbleVisible() const;
@@ -144,7 +140,7 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
                                   AnchorAlignment anchor_alignment) OVERRIDE;
   virtual void HideBubble(const views::TrayBubbleView* bubble_view) OVERRIDE;
 
-  internal::TrayAccessibility* GetTrayAccessibilityForTest() {
+  TrayAccessibility* GetTrayAccessibilityForTest() {
     return tray_accessibility_;
   }
 
@@ -152,7 +148,7 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
   views::View* GetTrayItemViewForTest(SystemTrayItem* tray_item);
 
   // Gets tray_date_ for browser tests.
-  internal::TrayDate* GetTrayDateForTesting() const;
+  TrayDate* GetTrayDateForTesting() const;
 
  private:
   // Creates the default set of items for the sytem tray.
@@ -196,7 +192,7 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
 
   const ScopedVector<SystemTrayItem>& items() const { return items_; }
 
-  // Overridden from internal::ActionableView.
+  // Overridden from ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 
   // Owned items.
@@ -210,10 +206,10 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
   std::map<SystemTrayItem*, views::View*> tray_item_map_;
 
   // Bubble for default and detailed views.
-  scoped_ptr<internal::SystemBubbleWrapper> system_bubble_;
+  scoped_ptr<SystemBubbleWrapper> system_bubble_;
 
   // Bubble for notifications.
-  scoped_ptr<internal::SystemBubbleWrapper> notification_bubble_;
+  scoped_ptr<SystemBubbleWrapper> notification_bubble_;
 
   // Keep track of the default view height so that when we create detailed
   // views directly (e.g. from a notification) we know what height to use.
@@ -228,8 +224,8 @@ class ASH_EXPORT SystemTray : public internal::TrayBackgroundView,
   // Note that the value is only valid when |system_bubble_| is true.
   bool full_system_tray_menu_;
 
-  internal::TrayAccessibility* tray_accessibility_;  // not owned
-  internal::TrayDate* tray_date_;
+  TrayAccessibility* tray_accessibility_;  // not owned
+  TrayDate* tray_date_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
diff --git a/ash/system/tray/system_tray_bubble.cc b/ash/system/tray/system_tray_bubble.cc
index 0316b54..1aedaf0 100644
--- a/ash/system/tray/system_tray_bubble.cc
+++ b/ash/system/tray/system_tray_bubble.cc
@@ -127,8 +127,6 @@ class AnimationObserverDeleteLayer : public ui::ImplicitAnimationObserver {
 
 }  // namespace
 
-namespace internal {
-
 // SystemTrayBubble
 
 SystemTrayBubble::SystemTrayBubble(
@@ -384,5 +382,4 @@ void SystemTrayBubble::CreateItemViews(user::LoginStatus login_status) {
     focus_view->RequestFocus();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/system_tray_bubble.h b/ash/system/tray/system_tray_bubble.h
index a8f576e..ece879c 100644
--- a/ash/system/tray/system_tray_bubble.h
+++ b/ash/system/tray/system_tray_bubble.h
@@ -14,12 +14,9 @@
 #include <vector>
 
 namespace ash {
-
 class SystemTray;
 class SystemTrayItem;
 
-namespace internal {
-
 class SystemTrayBubble {
  public:
   enum BubbleType {
@@ -76,7 +73,6 @@ class SystemTrayBubble {
   DISALLOW_COPY_AND_ASSIGN(SystemTrayBubble);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_
diff --git a/ash/system/tray/system_tray_item.h b/ash/system/tray/system_tray_item.h
index b0d1284..61d214e 100644
--- a/ash/system/tray/system_tray_item.h
+++ b/ash/system/tray/system_tray_item.h
@@ -16,12 +16,8 @@ class View;
 }
 
 namespace ash {
-
 class SystemTray;
-
-namespace internal {
 class TrayItemView;
-}
 
 class ASH_EXPORT SystemTrayItem {
  public:
diff --git a/ash/system/tray/system_tray_unittest.cc b/ash/system/tray/system_tray_unittest.cc
index 03ee4e4..281fd7c 100644
--- a/ash/system/tray/system_tray_unittest.cc
+++ b/ash/system/tray/system_tray_unittest.cc
@@ -173,7 +173,7 @@ TEST_F(SystemTrayTest, SystemTrayColoring) {
 TEST_F(SystemTrayTest, SystemTrayColoringAfterAlignmentChange) {
   SystemTray* tray = GetSystemTray();
   ASSERT_TRUE(tray->GetWidget());
-  internal::ShelfLayoutManager* manager =
+  ShelfLayoutManager* manager =
       Shell::GetPrimaryRootWindowController()->shelf()->shelf_layout_manager();
   manager->SetAlignment(SHELF_ALIGNMENT_BOTTOM);
   // At the beginning the tray coloring is not active.
@@ -343,9 +343,9 @@ TEST_F(SystemTrayTest, BubbleCreationTypesTest) {
 // Tests that the tray is laid out properly and is fully contained within
 // the shelf.
 TEST_F(SystemTrayTest, TrayBoundsInWidget) {
-  internal::ShelfLayoutManager* manager =
+  ShelfLayoutManager* manager =
       Shell::GetPrimaryRootWindowController()->shelf()->shelf_layout_manager();
-  internal::StatusAreaWidget* widget =
+  StatusAreaWidget* widget =
       Shell::GetPrimaryRootWindowController()->shelf()->status_area_widget();
   SystemTray* tray = widget->system_tray();
 
diff --git a/ash/system/tray/throbber_view.cc b/ash/system/tray/throbber_view.cc
index 2c2cc20..c24b291 100644
--- a/ash/system/tray/throbber_view.cc
+++ b/ash/system/tray/throbber_view.cc
@@ -11,8 +11,6 @@
 #include "ui/compositor/scoped_layer_animation_settings.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Time in ms per throbber frame.
@@ -106,5 +104,4 @@ void ThrobberView::ScheduleAnimation(bool start_throbber) {
   layer()->SetOpacity(start_throbber ? 1.0 : 0.0);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/throbber_view.h b/ash/system/tray/throbber_view.h
index 0f26632..c3f2004 100644
--- a/ash/system/tray/throbber_view.h
+++ b/ash/system/tray/throbber_view.h
@@ -10,7 +10,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 // A SmoothedThrobber with tooltip.
 class SystemTrayThrobber : public views::SmoothedThrobber {
@@ -59,7 +58,6 @@ class ThrobberView : public views::View {
   DISALLOW_COPY_AND_ASSIGN(ThrobberView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_THROBBER_VIEW_H_
diff --git a/ash/system/tray/tray_background_view.cc b/ash/system/tray/tray_background_view.cc
index f6af7c8..2e7b790 100644
--- a/ash/system/tray/tray_background_view.cc
+++ b/ash/system/tray/tray_background_view.cc
@@ -50,7 +50,6 @@ const int kAnimationDurationForPopupMS = 200;
 using views::TrayBubbleView;
 
 namespace ash {
-namespace internal {
 
 // static
 const char TrayBackgroundView::kViewClassName[] = "tray/TrayBackgroundView";
@@ -316,15 +315,16 @@ void TrayBackgroundView::TrayContainer::UpdateLayout() {
 ////////////////////////////////////////////////////////////////////////////////
 // TrayBackgroundView
 
-TrayBackgroundView::TrayBackgroundView(
-    internal::StatusAreaWidget* status_area_widget)
+TrayBackgroundView::TrayBackgroundView(StatusAreaWidget* status_area_widget)
     : status_area_widget_(status_area_widget),
       tray_container_(NULL),
       shelf_alignment_(SHELF_ALIGNMENT_BOTTOM),
       background_(NULL),
       hide_background_animator_(this, 0, kTrayBackgroundAlpha),
       hover_background_animator_(
-          this, 0, kTrayBackgroundHoverAlpha - kTrayBackgroundAlpha),
+          this,
+          0,
+          kTrayBackgroundHoverAlpha - kTrayBackgroundAlpha),
       hovered_(false),
       draw_background_as_active_(false),
       widget_observer_(new TrayWidgetObserver(this)) {
@@ -422,7 +422,7 @@ void TrayBackgroundView::SetPaintsBackground(
 }
 
 void TrayBackgroundView::SetContentsBackground() {
-  background_ = new internal::TrayBackground(this);
+  background_ = new TrayBackground(this);
   tray_container_->set_background(background_);
 }
 
@@ -507,7 +507,7 @@ void TrayBackgroundView::InitializeBubbleAnimations(
 aura::Window* TrayBackgroundView::GetBubbleWindowContainer() const {
   return ash::Shell::GetContainer(
       tray_container()->GetWidget()->GetNativeWindow()->GetRootWindow(),
-      ash::internal::kShellWindowId_SettingBubbleContainer);
+      ash::kShellWindowId_SettingBubbleContainer);
 }
 
 gfx::Rect TrayBackgroundView::GetBubbleAnchorRect(
@@ -620,13 +620,11 @@ void TrayBackgroundView::UpdateBubbleViewArrow(
 
   aura::Window* root_window =
       bubble_view->GetWidget()->GetNativeView()->GetRootWindow();
-  ash::internal::ShelfLayoutManager* shelf =
-      ShelfLayoutManager::ForShelf(root_window);
+  ash::ShelfLayoutManager* shelf = ShelfLayoutManager::ForShelf(root_window);
   bubble_view->SetArrowPaintType(
       (shelf && shelf->IsVisible()) ?
       views::BubbleBorder::PAINT_NORMAL :
       views::BubbleBorder::PAINT_TRANSPARENT);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_background_view.h b/ash/system/tray/tray_background_view.h
index 4addcba..365e63a 100644
--- a/ash/system/tray/tray_background_view.h
+++ b/ash/system/tray/tray_background_view.h
@@ -12,8 +12,6 @@
 #include "ui/views/bubble/tray_bubble_view.h"
 
 namespace ash {
-namespace internal {
-
 class ShelfLayoutManager;
 class StatusAreaWidget;
 class TrayEventFilter;
@@ -59,7 +57,7 @@ class ASH_EXPORT TrayBackgroundView : public ActionableView,
     DISALLOW_COPY_AND_ASSIGN(TrayContainer);
   };
 
-  explicit TrayBackgroundView(internal::StatusAreaWidget* status_area_widget);
+  explicit TrayBackgroundView(StatusAreaWidget* status_area_widget);
   virtual ~TrayBackgroundView();
 
   // Called after the tray has been added to the widget containing it.
@@ -73,11 +71,11 @@ class ASH_EXPORT TrayBackgroundView : public ActionableView,
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse) OVERRIDE;
 
-  // Overridden from internal::ActionableView.
+  // Overridden from ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
   virtual gfx::Rect GetFocusBounds() OVERRIDE;
 
-  // Overridden from internal::BackgroundAnimatorDelegate.
+  // Overridden from BackgroundAnimatorDelegate.
   virtual void UpdateBackground(int alpha) OVERRIDE;
 
   // Called whenever the shelf alignment changes.
@@ -164,11 +162,11 @@ class ASH_EXPORT TrayBackgroundView : public ActionableView,
   ShelfAlignment shelf_alignment_;
 
   // Owned by the view passed to SetContents().
-  internal::TrayBackground* background_;
+  TrayBackground* background_;
 
   // Animators for the background. They are only used for the old shelf layout.
-  internal::BackgroundAnimator hide_background_animator_;
-  internal::BackgroundAnimator hover_background_animator_;
+  BackgroundAnimator hide_background_animator_;
+  BackgroundAnimator hover_background_animator_;
 
   // True if the background gets hovered.
   bool hovered_;
@@ -183,7 +181,6 @@ class ASH_EXPORT TrayBackgroundView : public ActionableView,
   DISALLOW_COPY_AND_ASSIGN(TrayBackgroundView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_
diff --git a/ash/system/tray/tray_bar_button_with_title.cc b/ash/system/tray/tray_bar_button_with_title.cc
index 0fd94d84..a292a55 100644
--- a/ash/system/tray/tray_bar_button_with_title.cc
+++ b/ash/system/tray/tray_bar_button_with_title.cc
@@ -13,8 +13,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 const int kBarImagesActive[] = {
@@ -109,5 +107,4 @@ void TrayBarButtonWithTitle::Layout() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_bar_button_with_title.h b/ash/system/tray/tray_bar_button_with_title.h
index 8b63d4f..626a14a 100644
--- a/ash/system/tray/tray_bar_button_with_title.h
+++ b/ash/system/tray/tray_bar_button_with_title.h
@@ -14,7 +14,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
 
 // A button with a bar image and title text below the bar image. These buttons
 // will be used in audio and brightness control UI, which can be toggled with
@@ -43,7 +42,6 @@ class TrayBarButtonWithTitle : public views::CustomButton {
   DISALLOW_COPY_AND_ASSIGN(TrayBarButtonWithTitle);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_BAR_BUTTON_WITH_TITLE_H_
diff --git a/ash/system/tray/tray_bubble_wrapper.cc b/ash/system/tray/tray_bubble_wrapper.cc
index 5bd0c96..3576f6c 100644
--- a/ash/system/tray/tray_bubble_wrapper.cc
+++ b/ash/system/tray/tray_bubble_wrapper.cc
@@ -14,7 +14,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 TrayBubbleWrapper::TrayBubbleWrapper(TrayBackgroundView* tray,
                                      views::TrayBubbleView* bubble_view)
@@ -60,5 +59,4 @@ void TrayBubbleWrapper::OnWidgetBoundsChanged(views::Widget* widget,
   tray_->BubbleResized(bubble_view_);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_bubble_wrapper.h b/ash/system/tray/tray_bubble_wrapper.h
index 9ce443a..102e07e 100644
--- a/ash/system/tray/tray_bubble_wrapper.h
+++ b/ash/system/tray/tray_bubble_wrapper.h
@@ -14,8 +14,6 @@ class TrayBubbleView;
 }
 
 namespace ash {
-namespace internal {
-
 class TrayBackgroundView;
 class TrayEventFilter;
 
@@ -45,7 +43,6 @@ class TrayBubbleWrapper : public views::WidgetObserver {
   DISALLOW_COPY_AND_ASSIGN(TrayBubbleWrapper);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_BUBBLE_WRAPPER_H_
diff --git a/ash/system/tray/tray_details_view.cc b/ash/system/tray/tray_details_view.cc
index 1d8e3d8..1e439a3 100644
--- a/ash/system/tray/tray_details_view.cc
+++ b/ash/system/tray/tray_details_view.cc
@@ -15,7 +15,6 @@
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
 
 class ScrollSeparator : public views::View {
  public:
@@ -161,5 +160,4 @@ void TrayDetailsView::OnPaintBorder(gfx::Canvas* canvas) {
   views::View::OnPaintBorder(canvas);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_details_view.h b/ash/system/tray/tray_details_view.h
index 767670e..6193594 100644
--- a/ash/system/tray/tray_details_view.h
+++ b/ash/system/tray/tray_details_view.h
@@ -14,13 +14,9 @@ class ScrollView;
 }
 
 namespace ash {
-
-class SystemTrayItem;
-
-namespace internal {
-
 class FixedSizedScrollView;
 class ScrollBorder;
+class SystemTrayItem;
 class ViewClickListener;
 
 class ASH_EXPORT TrayDetailsView : public views::View {
@@ -67,7 +63,6 @@ class ASH_EXPORT TrayDetailsView : public views::View {
   DISALLOW_COPY_AND_ASSIGN(TrayDetailsView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_
diff --git a/ash/system/tray/tray_details_view_unittest.cc b/ash/system/tray/tray_details_view_unittest.cc
index c608120..50c89c0 100644
--- a/ash/system/tray/tray_details_view_unittest.cc
+++ b/ash/system/tray/tray_details_view_unittest.cc
@@ -29,11 +29,9 @@ SystemTray* GetSystemTray() {
       status_area_widget()->system_tray();
 }
 
-class TestDetailsView : public internal::TrayDetailsView,
-                        public internal::ViewClickListener {
+class TestDetailsView : public TrayDetailsView, public ViewClickListener {
  public:
-  explicit TestDetailsView(SystemTrayItem* owner)
-      : internal::TrayDetailsView(owner)  {}
+  explicit TestDetailsView(SystemTrayItem* owner) : TrayDetailsView(owner) {}
 
   virtual ~TestDetailsView() {}
 
@@ -44,7 +42,7 @@ class TestDetailsView : public internal::TrayDetailsView,
     footer()->content()->RequestFocus();
   }
 
-  // Overridden from internal::ViewClickListener:
+  // Overridden from ViewClickListener:
   virtual void OnViewClicked(views::View* sender) OVERRIDE {}
 
  private:
diff --git a/ash/system/tray/tray_empty.cc b/ash/system/tray/tray_empty.cc
index 45ecb32..bd2b7a1 100644
--- a/ash/system/tray/tray_empty.cc
+++ b/ash/system/tray/tray_empty.cc
@@ -26,7 +26,6 @@ class EmptyBackground : public views::Background {
 }
 
 namespace ash {
-namespace internal {
 
 TrayEmpty::TrayEmpty(SystemTray* system_tray)
     : SystemTrayItem(system_tray) {
@@ -64,5 +63,4 @@ void TrayEmpty::DestroyDetailedView() {}
 
 void TrayEmpty::UpdateAfterLoginStatusChange(user::LoginStatus status) {}
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_empty.h b/ash/system/tray/tray_empty.h
index a7575cf..c4be08c 100644
--- a/ash/system/tray/tray_empty.h
+++ b/ash/system/tray/tray_empty.h
@@ -8,7 +8,6 @@
 #include "ash/system/tray/system_tray_item.h"
 
 namespace ash {
-namespace internal {
 
 class TrayEmpty : public SystemTrayItem {
  public:
@@ -28,7 +27,6 @@ class TrayEmpty : public SystemTrayItem {
   DISALLOW_COPY_AND_ASSIGN(TrayEmpty);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_EMPTY_H_
diff --git a/ash/system/tray/tray_event_filter.cc b/ash/system/tray/tray_event_filter.cc
index d15c83d..5ed0122 100644
--- a/ash/system/tray/tray_event_filter.cc
+++ b/ash/system/tray/tray_event_filter.cc
@@ -18,7 +18,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 TrayEventFilter::TrayEventFilter() {
 }
@@ -56,10 +55,11 @@ bool TrayEventFilter::ProcessLocatedEvent(ui::LocatedEvent* event) {
   if (event->target()) {
     aura::Window* target = static_cast<aura::Window*>(event->target());
     // Don't process events that occurred inside an embedded menu.
-    internal::RootWindowController* root_controller =
-        internal::GetRootWindowController(target->GetRootWindow());
-    if (root_controller && root_controller->GetContainer(
-            internal::kShellWindowId_MenuContainer)->Contains(target)) {
+    RootWindowController* root_controller =
+        GetRootWindowController(target->GetRootWindow());
+    if (root_controller &&
+        root_controller->GetContainer(kShellWindowId_MenuContainer)
+            ->Contains(target)) {
       return false;
     }
   }
@@ -109,5 +109,4 @@ bool TrayEventFilter::ProcessLocatedEvent(ui::LocatedEvent* event) {
   return handled;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_event_filter.h b/ash/system/tray/tray_event_filter.h
index 4059315..e77e00f 100644
--- a/ash/system/tray/tray_event_filter.h
+++ b/ash/system/tray/tray_event_filter.h
@@ -16,8 +16,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
-
 class TrayBubbleWrapper;
 
 // Handles events for a tray bubble.
@@ -43,7 +41,6 @@ class TrayEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(TrayEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_
diff --git a/ash/system/tray/tray_image_item.cc b/ash/system/tray/tray_image_item.cc
index 7c5e216..386897c 100644
--- a/ash/system/tray/tray_image_item.cc
+++ b/ash/system/tray/tray_image_item.cc
@@ -13,7 +13,6 @@
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
 
 TrayImageItem::TrayImageItem(SystemTray* system_tray, int resource_id)
     : SystemTrayItem(system_tray),
@@ -89,5 +88,4 @@ void TrayImageItem::SetItemAlignment(ShelfAlignment alignment) {
   tray_view_->Layout();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_image_item.h b/ash/system/tray/tray_image_item.h
index 6dea5c8..6fad95f 100644
--- a/ash/system/tray/tray_image_item.h
+++ b/ash/system/tray/tray_image_item.h
@@ -12,8 +12,6 @@ class ImageView;
 }
 
 namespace ash {
-namespace internal {
-
 class TrayItemView;
 
 class TrayImageItem : public SystemTrayItem {
@@ -50,7 +48,6 @@ class TrayImageItem : public SystemTrayItem {
   DISALLOW_COPY_AND_ASSIGN(TrayImageItem);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_IMAGE_ITEM_H_
diff --git a/ash/system/tray/tray_item_more.cc b/ash/system/tray/tray_item_more.cc
index 687e697..29799ea 100644
--- a/ash/system/tray/tray_item_more.cc
+++ b/ash/system/tray/tray_item_more.cc
@@ -16,7 +16,6 @@
 #include "ui/views/layout/box_layout.h"
 
 namespace ash {
-namespace internal {
 
 TrayItemMore::TrayItemMore(SystemTrayItem* owner, bool show_more)
     : owner_(owner),
@@ -103,5 +102,4 @@ void TrayItemMore::GetAccessibleState(ui::AXViewState* state) {
   state->name = accessible_name_;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_item_more.h b/ash/system/tray/tray_item_more.h
index ae668c5..e61f5de 100644
--- a/ash/system/tray/tray_item_more.h
+++ b/ash/system/tray/tray_item_more.h
@@ -15,11 +15,8 @@ class View;
 }
 
 namespace ash {
-
 class SystemTrayItem;
 
-namespace internal {
-
 // A view with a chevron ('>') on the right edge. Clicking on the view brings up
 // the detailed view of the tray-item that owns it.
 class TrayItemMore : public ActionableView {
@@ -58,7 +55,6 @@ class TrayItemMore : public ActionableView {
   DISALLOW_COPY_AND_ASSIGN(TrayItemMore);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_ITEM_MORE_H_
diff --git a/ash/system/tray/tray_item_view.cc b/ash/system/tray/tray_item_view.cc
index 9a7a75c4..b2177f9 100644
--- a/ash/system/tray/tray_item_view.cc
+++ b/ash/system/tray/tray_item_view.cc
@@ -24,7 +24,6 @@ bool animations_enabled = true;
 }
 
 namespace ash {
-namespace internal {
 
 TrayItemView::TrayItemView(SystemTrayItem* owner)
     : owner_(owner),
@@ -137,5 +136,4 @@ void TrayItemView::AnimationCanceled(const gfx::Animation* animation) {
   AnimationEnded(animation);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_item_view.h b/ash/system/tray/tray_item_view.h
index 761e918..854af3c 100644
--- a/ash/system/tray/tray_item_view.h
+++ b/ash/system/tray/tray_item_view.h
@@ -19,11 +19,8 @@ class Label;
 }
 
 namespace ash {
-
 class SystemTrayItem;
 
-namespace internal {
-
 // Base-class for items in the tray. It makes sure the widget is updated
 // correctly when the visibility/size of the tray item changes. It also adds
 // animation when showing/hiding the item in the tray.
@@ -79,7 +76,6 @@ class ASH_EXPORT TrayItemView : public views::View,
   DISALLOW_COPY_AND_ASSIGN(TrayItemView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_
diff --git a/ash/system/tray/tray_notification_view.cc b/ash/system/tray/tray_notification_view.cc
index c095892..d27296f 100644
--- a/ash/system/tray/tray_notification_view.cc
+++ b/ash/system/tray/tray_notification_view.cc
@@ -16,7 +16,6 @@
 #include "ui/views/layout/grid_layout.h"
 
 namespace ash {
-namespace internal {
 
 TrayNotificationView::TrayNotificationView(SystemTrayItem* owner, int icon_id)
     : owner_(owner),
@@ -168,5 +167,4 @@ void TrayNotificationView::HandleClickAction() {
   OnClickAction();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_notification_view.h b/ash/system/tray/tray_notification_view.h
index 314b8aa..28c2236 100644
--- a/ash/system/tray/tray_notification_view.h
+++ b/ash/system/tray/tray_notification_view.h
@@ -18,11 +18,8 @@ class ImageView;
 }
 
 namespace ash {
-
 class SystemTrayItem;
 
-namespace internal {
-
 // A view for closable notification views, laid out like:
 //  -------------------
 // | icon  contents  x |
@@ -92,7 +89,6 @@ class TrayNotificationView : public views::SlideOutView,
   DISALLOW_COPY_AND_ASSIGN(TrayNotificationView);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_NOTIFICATION_VIEW_H_
diff --git a/ash/system/tray/tray_popup_header_button.cc b/ash/system/tray/tray_popup_header_button.cc
index d19cbc5..50c1356 100644
--- a/ash/system/tray/tray_popup_header_button.cc
+++ b/ash/system/tray/tray_popup_header_button.cc
@@ -11,7 +11,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
 
 // static
 const char TrayPopupHeaderButton::kViewClassName[] =
@@ -66,5 +65,4 @@ void TrayPopupHeaderButton::StateChanged() {
   SchedulePaint();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_popup_header_button.h b/ash/system/tray/tray_popup_header_button.h
index 37849bc..054530b 100644
--- a/ash/system/tray/tray_popup_header_button.h
+++ b/ash/system/tray/tray_popup_header_button.h
@@ -11,7 +11,6 @@
 #include "ui/views/controls/button/image_button.h"
 
 namespace ash {
-namespace internal {
 
 // A ToggleImageButton with fixed size, paddings and hover effects. These
 // buttons are used in the header.
@@ -39,7 +38,6 @@ class ASH_EXPORT TrayPopupHeaderButton : public views::ToggleImageButton {
   DISALLOW_COPY_AND_ASSIGN(TrayPopupHeaderButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_HEADER_BUTTON_H_
diff --git a/ash/system/tray/tray_popup_label_button.cc b/ash/system/tray/tray_popup_label_button.cc
index 4f80288..cca2f9e 100644
--- a/ash/system/tray/tray_popup_label_button.cc
+++ b/ash/system/tray/tray_popup_label_button.cc
@@ -11,7 +11,6 @@
 #include "ui/views/painter.h"
 
 namespace ash {
-namespace internal {
 
 TrayPopupLabelButton::TrayPopupLabelButton(views::ButtonListener* listener,
                                            const base::string16& text)
@@ -28,5 +27,4 @@ TrayPopupLabelButton::TrayPopupLabelButton(views::ButtonListener* listener,
 
 TrayPopupLabelButton::~TrayPopupLabelButton() {}
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_popup_label_button.h b/ash/system/tray/tray_popup_label_button.h
index a1f9db6..82d34f4 100644
--- a/ash/system/tray/tray_popup_label_button.h
+++ b/ash/system/tray/tray_popup_label_button.h
@@ -11,7 +11,6 @@
 #include "ui/views/controls/button/label_button.h"
 
 namespace ash {
-namespace internal {
 
 // A label button with custom alignment, border and focus border.
 class TrayPopupLabelButton : public views::LabelButton {
@@ -24,7 +23,6 @@ class TrayPopupLabelButton : public views::LabelButton {
   DISALLOW_COPY_AND_ASSIGN(TrayPopupLabelButton);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_LABEL_BUTTON_H_
diff --git a/ash/system/tray/tray_popup_label_button_border.cc b/ash/system/tray/tray_popup_label_button_border.cc
index d5be6bc..ba50b53 100644
--- a/ash/system/tray/tray_popup_label_button_border.cc
+++ b/ash/system/tray/tray_popup_label_button_border.cc
@@ -13,7 +13,6 @@
 #include "ui/views/native_theme_delegate.h"
 
 namespace ash {
-namespace internal {
 
 TrayPopupLabelButtonBorder::TrayPopupLabelButtonBorder()
     : LabelButtonBorder(views::Button::STYLE_TEXTBUTTON) {
@@ -97,5 +96,4 @@ void TrayPopupLabelButtonBorder::Paint(const views::View& view,
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_popup_label_button_border.h b/ash/system/tray/tray_popup_label_button_border.h
index 04e5c73..8207d89 100644
--- a/ash/system/tray/tray_popup_label_button_border.h
+++ b/ash/system/tray/tray_popup_label_button_border.h
@@ -10,7 +10,6 @@
 #include "ui/views/controls/button/label_button_border.h"
 
 namespace ash {
-namespace internal {
 
 // A border for label buttons that paints a vertical separator in normal state
 // and a custom hover effect in hovered or pressed state.
@@ -26,7 +25,6 @@ class TrayPopupLabelButtonBorder : public views::LabelButtonBorder {
   DISALLOW_COPY_AND_ASSIGN(TrayPopupLabelButtonBorder);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_LABEL_BUTTON_BORDER_H_
diff --git a/ash/system/tray/tray_utils.cc b/ash/system/tray/tray_utils.cc
index 0145eae..2153117 100644
--- a/ash/system/tray/tray_utils.cc
+++ b/ash/system/tray/tray_utils.cc
@@ -11,7 +11,6 @@
 #include "ui/views/controls/label.h"
 
 namespace ash {
-namespace internal {
 
 void SetupLabelForTray(views::Label* label) {
   // Making label_font static to avoid the time penalty of Derive for all but
@@ -67,5 +66,4 @@ void SetTrayLabelItemBorder(TrayItemView* tray_view,
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray/tray_utils.h b/ash/system/tray/tray_utils.h
index 412fb97..04dc0d6 100644
--- a/ash/system/tray/tray_utils.h
+++ b/ash/system/tray/tray_utils.h
@@ -13,7 +13,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 class TrayItemView;
 
@@ -29,7 +28,6 @@ void SetTrayImageItemBorder(views::View* tray_view, ShelfAlignment alignment);
 void SetTrayLabelItemBorder(TrayItemView* tray_view,
                             ShelfAlignment alignment);
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_UTILS_H_
diff --git a/ash/system/tray/view_click_listener.h b/ash/system/tray/view_click_listener.h
index b5f4bb8..f1cc3d2 100644
--- a/ash/system/tray/view_click_listener.h
+++ b/ash/system/tray/view_click_listener.h
@@ -10,7 +10,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 class ViewClickListener {
  public:
@@ -20,7 +19,6 @@ class ViewClickListener {
   virtual ~ViewClickListener() {}
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_VIEW_CLICK_LISTENER_H_
diff --git a/ash/system/tray_accessibility.cc b/ash/system/tray_accessibility.cc
index 073b8989..1c2fe22 100644
--- a/ash/system/tray_accessibility.cc
+++ b/ash/system/tray_accessibility.cc
@@ -27,8 +27,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 enum AccessibilityState {
@@ -92,7 +90,7 @@ class DefaultAccessibilityView : public TrayItemMore {
 };
 
 ////////////////////////////////////////////////////////////////////////////////
-// ash::internal::tray::AccessibilityPopupView
+// ash::tray::AccessibilityPopupView
 
 AccessibilityPopupView::AccessibilityPopupView(SystemTrayItem* owner,
                                                uint32 enabled_state_bits)
@@ -122,7 +120,7 @@ views::Label* AccessibilityPopupView::CreateLabel(uint32 enabled_state_bits) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// ash::internal::tray::AccessibilityDetailedView
+// ash::tray::AccessibilityDetailedView
 
 AccessibilityDetailedView::AccessibilityDetailedView(
     SystemTrayItem* owner, user::LoginStatus login) :
@@ -308,7 +306,7 @@ void AccessibilityDetailedView::ButtonPressed(views::Button* sender,
 }  // namespace tray
 
 ////////////////////////////////////////////////////////////////////////////////
-// ash::internal::TrayAccessibility
+// ash::TrayAccessibility
 
 TrayAccessibility::TrayAccessibility(SystemTray* system_tray)
     : TrayImageItem(system_tray, IDR_AURA_UBER_TRAY_ACCESSIBILITY),
@@ -434,5 +432,4 @@ void TrayAccessibility::OnAccessibilityModeChanged(
   previous_accessibility_state_ = accessibility_state;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray_accessibility.h b/ash/system/tray_accessibility.h
index df0a186..b2bc648 100644
--- a/ash/system/tray_accessibility.h
+++ b/ash/system/tray_accessibility.h
@@ -27,7 +27,7 @@ class View;
 }
 
 namespace ash {
-
+class HoverHighlightView;
 class SystemTrayItem;
 
 class ASH_EXPORT AccessibilityObserver {
@@ -39,9 +39,6 @@ class ASH_EXPORT AccessibilityObserver {
       AccessibilityNotificationVisibility notify) = 0;
 };
 
-namespace internal {
-
-class HoverHighlightView;
 
 namespace tray {
 
@@ -150,7 +147,6 @@ class TrayAccessibility : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayAccessibility);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_ACCESSIBILITY_H_
diff --git a/ash/system/tray_update.cc b/ash/system/tray_update.cc
index e01dd97..79a3ad6 100644
--- a/ash/system/tray_update.cc
+++ b/ash/system/tray_update.cc
@@ -60,7 +60,7 @@ int DecideResource(ash::UpdateObserver::UpdateSeverity severity, bool dark) {
   return 0;
 }
 
-class UpdateView : public ash::internal::ActionableView {
+class UpdateView : public ash::ActionableView {
  public:
   explicit UpdateView(ash::UpdateObserver::UpdateSeverity severity) {
     SetLayoutManager(new
@@ -70,7 +70,7 @@ class UpdateView : public ash::internal::ActionableView {
 
     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
     views::ImageView* image =
-        new ash::internal::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
+        new ash::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
     image->SetImage(bundle.GetImageNamed(DecideResource(severity, true)).
         ToImageSkia());
 
@@ -96,8 +96,6 @@ class UpdateView : public ash::internal::ActionableView {
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 class UpdateNagger : public ui::LayerAnimationObserver {
@@ -110,7 +108,7 @@ class UpdateNagger : public ui::LayerAnimationObserver {
   }
 
   virtual ~UpdateNagger() {
-    internal::StatusAreaWidget* status_area =
+    StatusAreaWidget* status_area =
         Shell::GetPrimaryRootWindowController()->shelf()->status_area_widget();
     if (status_area) {
       status_area->system_tray()->GetWidget()->GetNativeView()->layer()->
@@ -201,5 +199,4 @@ void TrayUpdate::OnUpdateRecommended(UpdateObserver::UpdateSeverity severity) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/tray_update.h b/ash/system/tray_update.h
index 123cde1..d6212c0 100644
--- a/ash/system/tray_update.h
+++ b/ash/system/tray_update.h
@@ -14,7 +14,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
 
 namespace tray {
 class UpdateNagger;
@@ -45,7 +44,6 @@ class TrayUpdate : public TrayImageItem,
   DISALLOW_COPY_AND_ASSIGN(TrayUpdate);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_UPDATE_H_
diff --git a/ash/system/user/tray_user.cc b/ash/system/user/tray_user.cc
index adff775..e8ea56e 100644
--- a/ash/system/user/tray_user.cc
+++ b/ash/system/user/tray_user.cc
@@ -134,8 +134,6 @@ void SwitchUser(ash::MultiProfileIndex user_index) {
 }  // namespace
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 // A custom image view with rounded edges.
@@ -1356,14 +1354,12 @@ MultiProfileIndex TrayUser::GetTrayIndex() {
 }
 
 void TrayUser::UpdateLayoutOfItem() {
-  internal::RootWindowController* controller =
-      internal::GetRootWindowController(
-          system_tray()->GetWidget()->GetNativeWindow()->GetRootWindow());
+  RootWindowController* controller = GetRootWindowController(
+      system_tray()->GetWidget()->GetNativeWindow()->GetRootWindow());
   if (controller && controller->shelf()) {
     UpdateAfterShelfAlignmentChange(
         controller->GetShelfLayoutManager()->GetAlignment());
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/user/tray_user.h b/ash/system/user/tray_user.h
index 6ccad97..d956c31 100644
--- a/ash/system/user/tray_user.h
+++ b/ash/system/user/tray_user.h
@@ -22,8 +22,6 @@ class Label;
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class UserView;
 class RoundedImageView;
@@ -97,7 +95,6 @@ class ASH_EXPORT TrayUser : public SystemTrayItem,
   DISALLOW_COPY_AND_ASSIGN(TrayUser);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_USER_TRAY_USER_H_
diff --git a/ash/system/user/tray_user_separator.cc b/ash/system/user/tray_user_separator.cc
index dc63bff..dd60f6b 100644
--- a/ash/system/user/tray_user_separator.cc
+++ b/ash/system/user/tray_user_separator.cc
@@ -9,7 +9,6 @@
 #include "ui/views/view.h"
 
 namespace ash {
-namespace internal {
 
 TrayUserSeparator::TrayUserSeparator(SystemTray* system_tray)
     : SystemTrayItem(system_tray),
@@ -44,5 +43,4 @@ void TrayUserSeparator::DestroyDefaultView() {
   separator_shown_ = false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/user/tray_user_separator.h b/ash/system/user/tray_user_separator.h
index 62e5209..003e4cd 100644
--- a/ash/system/user/tray_user_separator.h
+++ b/ash/system/user/tray_user_separator.h
@@ -9,7 +9,6 @@
 #include "ash/system/tray/system_tray_item.h"
 
 namespace ash {
-namespace internal {
 
 // This tray item is showing an additional separator line between the logged in
 // users and the rest of the system tray menu. The separator will only be shown
@@ -41,7 +40,6 @@ class ASH_EXPORT TrayUserSeparator : public SystemTrayItem {
   DISALLOW_COPY_AND_ASSIGN(TrayUserSeparator);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_USER_TRAY_USER_SEPARATOR_H_
diff --git a/ash/system/user/tray_user_unittest.cc b/ash/system/user/tray_user_unittest.cc
index 96f7fa6..b0d77c4 100644
--- a/ash/system/user/tray_user_unittest.cc
+++ b/ash/system/user/tray_user_unittest.cc
@@ -23,7 +23,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 class TrayUserTest : public ash::test::AshTestBase {
  public:
@@ -48,10 +47,8 @@ class TrayUserTest : public ash::test::AshTestBase {
   ShelfLayoutManager* shelf() { return shelf_; }
   SystemTray* tray() { return tray_; }
   ash::test::TestSessionStateDelegate* delegate() { return delegate_; }
-  ash::internal::TrayUser* tray_user(int index) { return tray_user_[index]; }
-  ash::internal::TrayUserSeparator* tray_user_separator() {
-    return tray_user_separator_;
-  }
+  ash::TrayUser* tray_user(int index) { return tray_user_[index]; }
+  ash::TrayUserSeparator* tray_user_separator() { return tray_user_separator_; }
 
  private:
   ShelfLayoutManager* shelf_;
@@ -59,7 +56,7 @@ class TrayUserTest : public ash::test::AshTestBase {
   ash::test::TestSessionStateDelegate* delegate_;
 
   // Note that the ownership of these items is on the shelf.
-  std::vector<ash::internal::TrayUser*> tray_user_;
+  std::vector<ash::TrayUser*> tray_user_;
 
   // The separator between the tray users and the rest of the menu.
   // Note: The item will get owned by the shelf.
@@ -100,11 +97,11 @@ void TrayUserTest::InitializeParameters(int users_logged_in,
   // Instead of using the existing tray panels we create new ones which makes
   // the access easier.
   for (int i = 0; i < delegate_->GetMaximumNumberOfLoggedInUsers(); i++) {
-    tray_user_.push_back(new ash::internal::TrayUser(tray_, i));
+    tray_user_.push_back(new ash::TrayUser(tray_, i));
     tray_->AddTrayItem(tray_user_[i]);
   }
   // We then add also the separator.
-  tray_user_separator_ = new ash::internal::TrayUserSeparator(tray_);
+  tray_user_separator_ = new ash::TrayUserSeparator(tray_);
   tray_->AddTrayItem(tray_user_separator_);
 }
 
@@ -152,8 +149,7 @@ TEST_F(TrayUserTest, SingleUserModeDoesNotAllowAddingUser) {
   EXPECT_FALSE(tray()->IsAnyBubbleVisible());
 
   for (int i = 0; i < delegate()->GetMaximumNumberOfLoggedInUsers(); i++)
-    EXPECT_EQ(ash::internal::TrayUser::HIDDEN,
-              tray_user(i)->GetStateForTest());
+    EXPECT_EQ(ash::TrayUser::HIDDEN, tray_user(i)->GetStateForTest());
   EXPECT_FALSE(tray_user_separator()->separator_shown());
 
   ShowTrayMenu(&generator);
@@ -162,8 +158,7 @@ TEST_F(TrayUserTest, SingleUserModeDoesNotAllowAddingUser) {
   EXPECT_TRUE(tray()->IsAnyBubbleVisible());
 
   for (int i = 0; i < delegate()->GetMaximumNumberOfLoggedInUsers(); i++)
-    EXPECT_EQ(i == 0 ? ash::internal::TrayUser::SHOWN :
-                       ash::internal::TrayUser::HIDDEN,
+    EXPECT_EQ(i == 0 ? ash::TrayUser::SHOWN : ash::TrayUser::HIDDEN,
               tray_user(i)->GetStateForTest());
   EXPECT_FALSE(tray_user_separator()->separator_shown());
   tray()->CloseSystemBubble();
@@ -200,8 +195,7 @@ TEST_F(TrayUserTest, MutiUserModeDoesNotAllowToAddUser) {
     EXPECT_TRUE(tray()->HasSystemBubble());
     EXPECT_TRUE(tray()->IsAnyBubbleVisible());
     for (int i = 0; i < max_users; i++) {
-      EXPECT_EQ(i < j ? ash::internal::TrayUser::SHOWN :
-                        ash::internal::TrayUser::HIDDEN,
+      EXPECT_EQ(i < j ? ash::TrayUser::SHOWN : ash::TrayUser::HIDDEN,
                 tray_user(i)->GetStateForTest());
     }
 
@@ -210,33 +204,28 @@ TEST_F(TrayUserTest, MutiUserModeDoesNotAllowToAddUser) {
 
     // Move the mouse over the user item and it should hover.
     MoveOverUserItem(&generator, 0);
-    EXPECT_EQ(ash::internal::TrayUser::HOVERED,
-              tray_user(0)->GetStateForTest());
+    EXPECT_EQ(ash::TrayUser::HOVERED, tray_user(0)->GetStateForTest());
     for (int i = 1; i < max_users; i++) {
-      EXPECT_EQ(i < j ? ash::internal::TrayUser::SHOWN :
-                        ash::internal::TrayUser::HIDDEN,
+      EXPECT_EQ(i < j ? ash::TrayUser::SHOWN : ash::TrayUser::HIDDEN,
                 tray_user(i)->GetStateForTest());
     }
 
     // Check that clicking the button allows to add item if we have still room
     // for one more user.
     ClickUserItem(&generator, 0);
-    EXPECT_EQ(j == max_users ?
-                  ash::internal::TrayUser::ACTIVE_BUT_DISABLED :
-                  ash::internal::TrayUser::ACTIVE,
+    EXPECT_EQ(j == max_users ? ash::TrayUser::ACTIVE_BUT_DISABLED
+                             : ash::TrayUser::ACTIVE,
               tray_user(0)->GetStateForTest());
 
     // Click the button again to see that the menu goes away.
     ClickUserItem(&generator, 0);
-    EXPECT_EQ(ash::internal::TrayUser::HOVERED,
-              tray_user(0)->GetStateForTest());
+    EXPECT_EQ(ash::TrayUser::HOVERED, tray_user(0)->GetStateForTest());
 
     // Close and check that everything is deleted.
     tray()->CloseSystemBubble();
     EXPECT_FALSE(tray()->IsAnyBubbleVisible());
     for (int i = 0; i < delegate()->GetMaximumNumberOfLoggedInUsers(); i++)
-      EXPECT_EQ(ash::internal::TrayUser::HIDDEN,
-                tray_user(i)->GetStateForTest());
+      EXPECT_EQ(ash::TrayUser::HIDDEN, tray_user(i)->GetStateForTest());
   }
 }
 
@@ -258,5 +247,4 @@ TEST_F(TrayUserTest, MutiUserModeButtonClicks) {
 
 #endif
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/web_notification/web_notification_tray.cc b/ash/system/web_notification/web_notification_tray.cc
index e143143..40c2539 100644
--- a/ash/system/web_notification/web_notification_tray.cc
+++ b/ash/system/web_notification/web_notification_tray.cc
@@ -63,7 +63,6 @@ const int kEnableQuietModeDay = 2;
 
 }
 
-namespace internal {
 namespace {
 
 const SkColor kWebNotificationColorNoUnread = SkColorSetA(SK_ColorWHITE, 128);
@@ -233,7 +232,7 @@ class WebNotificationBubbleWrapper {
 
  private:
   scoped_ptr<message_center::MessageBubbleBase> bubble_;
-  scoped_ptr<internal::TrayBubbleWrapper> bubble_wrapper_;
+  scoped_ptr<TrayBubbleWrapper> bubble_wrapper_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationBubbleWrapper);
 };
@@ -297,16 +296,13 @@ class WebNotificationButton : public views::CustomButton {
   DISALLOW_COPY_AND_ASSIGN(WebNotificationButton);
 };
 
-}  // namespace internal
-
-WebNotificationTray::WebNotificationTray(
-    internal::StatusAreaWidget* status_area_widget)
+WebNotificationTray::WebNotificationTray(StatusAreaWidget* status_area_widget)
     : TrayBackgroundView(status_area_widget),
       button_(NULL),
       show_message_center_on_unlock_(false),
       should_update_tray_content_(false),
       should_block_shelf_auto_hide_(false) {
-  button_ = new internal::WebNotificationButton(this);
+  button_ = new WebNotificationButton(this);
   button_->set_triggerable_event_flags(
       ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON);
   tray_container()->AddChildView(button_);
@@ -319,11 +315,11 @@ WebNotificationTray::WebNotificationTray(
   popup_collection_.reset(new message_center::MessagePopupCollection(
       ash::Shell::GetContainer(
           status_area_widget->GetNativeView()->GetRootWindow(),
-          internal::kShellWindowId_StatusContainer),
+          kShellWindowId_StatusContainer),
       message_center(),
       message_center_tray_.get(),
       ash::switches::UseAlternateShelfLayout()));
-  work_area_observer_.reset(new internal::WorkAreaObserver());
+  work_area_observer_.reset(new WorkAreaObserver());
   work_area_observer_->StartObserving(
       popup_collection_.get(),
       status_area_widget->GetNativeView()->GetRootWindow());
@@ -380,7 +376,7 @@ bool WebNotificationTray::ShowMessageCenterInternal(bool show_settings) {
   if (show_settings)
     message_center_bubble->SetSettingsVisible();
   message_center_bubble_.reset(
-      new internal::WebNotificationBubbleWrapper(this, message_center_bubble));
+      new WebNotificationBubbleWrapper(this, message_center_bubble));
 
   status_area_widget()->SetHideSystemNotifications(true);
   GetShelfLayoutManager()->UpdateAutoHideState();
@@ -456,7 +452,7 @@ void WebNotificationTray::UpdateAfterLoginStatusChange(
 void WebNotificationTray::SetShelfAlignment(ShelfAlignment alignment) {
   if (alignment == shelf_alignment())
     return;
-  internal::TrayBackgroundView::SetShelfAlignment(alignment);
+  TrayBackgroundView::SetShelfAlignment(alignment);
   tray_container()->SetBorder(views::Border::NullBorder());
   // Destroy any existing bubble so that it will be rebuilt correctly.
   message_center_tray_->HideMessageCenterBubble();
diff --git a/ash/system/web_notification/web_notification_tray.h b/ash/system/web_notification/web_notification_tray.h
index fdaf4d0..88be4b2 100644
--- a/ash/system/web_notification/web_notification_tray.h
+++ b/ash/system/web_notification/web_notification_tray.h
@@ -38,23 +38,20 @@ class MessagePopupCollection;
 }
 
 namespace ash {
-namespace internal {
 class StatusAreaWidget;
 class WebNotificationBubbleWrapper;
 class WebNotificationButton;
 class WorkAreaObserver;
-}
 
 class ASH_EXPORT WebNotificationTray
-    : public internal::TrayBackgroundView,
+    : public TrayBackgroundView,
       public views::TrayBubbleView::Delegate,
       public message_center::MessageCenterTrayDelegate,
       public views::ButtonListener,
       public base::SupportsWeakPtr<WebNotificationTray>,
       public ui::SimpleMenuModel::Delegate {
  public:
-  explicit WebNotificationTray(
-      internal::StatusAreaWidget* status_area_widget);
+  explicit WebNotificationTray(StatusAreaWidget* status_area_widget);
   virtual ~WebNotificationTray();
 
   // Sets the height of the system tray from the edge of the work area so that
@@ -85,7 +82,7 @@ class ASH_EXPORT WebNotificationTray
       const views::TrayBubbleView* bubble_view) OVERRIDE;
   virtual bool ClickedOutsideBubble() OVERRIDE;
 
-  // Overridden from internal::ActionableView.
+  // Overridden from ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 
   // Overridden from views::TrayBubbleView::Delegate.
@@ -154,7 +151,7 @@ class ASH_EXPORT WebNotificationTray
   // Creates the menu model for quiet mode and returns it.
   ui::MenuModel* CreateQuietModeMenu();
 
-  internal::WebNotificationBubbleWrapper* message_center_bubble() const {
+  WebNotificationBubbleWrapper* message_center_bubble() const {
     return message_center_bubble_.get();
   }
 
@@ -163,9 +160,9 @@ class ASH_EXPORT WebNotificationTray
   message_center::MessageCenterBubble* GetMessageCenterBubbleForTest();
 
   scoped_ptr<message_center::MessageCenterTray> message_center_tray_;
-  scoped_ptr<internal::WebNotificationBubbleWrapper> message_center_bubble_;
+  scoped_ptr<WebNotificationBubbleWrapper> message_center_bubble_;
   scoped_ptr<message_center::MessagePopupCollection> popup_collection_;
-  internal::WebNotificationButton* button_;
+  WebNotificationButton* button_;
 
   bool show_message_center_on_unlock_;
 
@@ -178,7 +175,7 @@ class ASH_EXPORT WebNotificationTray
   bool should_block_shelf_auto_hide_;
 
   // Observes the work area for |popup_collection_| and notifies to it.
-  scoped_ptr<internal::WorkAreaObserver> work_area_observer_;
+  scoped_ptr<WorkAreaObserver> work_area_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
 };
diff --git a/ash/system/web_notification/web_notification_tray_unittest.cc b/ash/system/web_notification/web_notification_tray_unittest.cc
index 34fe4a5..5a87d14 100644
--- a/ash/system/web_notification/web_notification_tray_unittest.cc
+++ b/ash/system/web_notification/web_notification_tray_unittest.cc
@@ -46,7 +46,7 @@ WebNotificationTray* GetTray() {
 }
 
 WebNotificationTray* GetSecondaryTray() {
-  internal::RootWindowController* primary_controller =
+  RootWindowController* primary_controller =
       Shell::GetPrimaryRootWindowController();
   Shell::RootWindowControllerList controllers =
       Shell::GetAllRootWindowControllers();
@@ -293,15 +293,14 @@ TEST_F(WebNotificationTrayTest, MAYBE_PopupShownOnBothDisplays) {
   // root window controller and shelf with having notifications. This code
   // verifies it doesn't cause crash and popups are still visible. See
   // http://crbug.com/263664
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
-  display_manager->SetSecondDisplayMode(internal::DisplayManager::MIRRORING);
+  display_manager->SetSecondDisplayMode(DisplayManager::MIRRORING);
   UpdateDisplay("400x400,200x200");
   EXPECT_TRUE(GetTray()->IsPopupVisible());
   EXPECT_FALSE(GetSecondaryTray());
 
-  display_manager->SetSecondDisplayMode(internal::DisplayManager::EXTENDED);
+  display_manager->SetSecondDisplayMode(DisplayManager::EXTENDED);
   UpdateDisplay("400x400,200x200");
   EXPECT_TRUE(GetTray()->IsPopupVisible());
   secondary_tray = GetSecondaryTray();
@@ -370,7 +369,7 @@ TEST_F(WebNotificationTrayTest, MAYBE_PopupAndAutoHideShelf) {
   // Shelf's auto-hide state won't be HIDDEN unless window exists.
   scoped_ptr<aura::Window> window(
       CreateTestWindowInShellWithBounds(gfx::Rect(1, 2, 3, 4)));
-  internal::ShelfLayoutManager* shelf =
+  ShelfLayoutManager* shelf =
       Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
   shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
 
@@ -432,7 +431,7 @@ TEST_F(WebNotificationTrayTest, MAYBE_PopupAndFullscreen) {
   // Checks the work area for normal auto-hidden state.
   scoped_ptr<aura::Window> window(
       CreateTestWindowInShellWithBounds(gfx::Rect(1, 2, 3, 4)));
-  internal::ShelfLayoutManager* shelf =
+  ShelfLayoutManager* shelf =
       Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
   shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
   EXPECT_EQ(SHELF_AUTO_HIDE_HIDDEN, shelf->auto_hide_state());
diff --git a/ash/system/win/audio/tray_audio_win.cc b/ash/system/win/audio/tray_audio_win.cc
index 0d2226c..c320541 100644
--- a/ash/system/win/audio/tray_audio_win.cc
+++ b/ash/system/win/audio/tray_audio_win.cc
@@ -11,8 +11,6 @@ namespace ash {
 using system::TrayAudioDelegate;
 using system::TrayAudioDelegateWin;
 
-namespace internal {
-
 TrayAudioWin::TrayAudioWin(SystemTray* system_tray)
     : TrayAudio(system_tray,
                 scoped_ptr<TrayAudioDelegate>(new TrayAudioDelegateWin())) {
@@ -21,5 +19,4 @@ TrayAudioWin::TrayAudioWin(SystemTray* system_tray)
 TrayAudioWin::~TrayAudioWin() {
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/system/win/audio/tray_audio_win.h b/ash/system/win/audio/tray_audio_win.h
index 33ca7cb..5df2269 100644
--- a/ash/system/win/audio/tray_audio_win.h
+++ b/ash/system/win/audio/tray_audio_win.h
@@ -11,8 +11,6 @@
 
 namespace ash {
 
-namespace internal {
-
 class TrayAudioWin : public TrayAudio {
  public:
   explicit TrayAudioWin(SystemTray* system_tray);
@@ -22,7 +20,6 @@ class TrayAudioWin : public TrayAudio {
   DISALLOW_COPY_AND_ASSIGN(TrayAudioWin);
 };
 
-}  // namespace internal
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_WIN_AUDIO_TRAY_AUDIO_WIN_H_
\ No newline at end of file
+#endif  // ASH_SYSTEM_WIN_AUDIO_TRAY_AUDIO_WIN_H_
diff --git a/ash/test/app_list_controller_test_api.h b/ash/test/app_list_controller_test_api.h
index 4064a77..733264b 100644
--- a/ash/test/app_list_controller_test_api.h
+++ b/ash/test/app_list_controller_test_api.h
@@ -13,10 +13,8 @@ class AppsGridView;
 }
 
 namespace ash {
-class Shell;
-namespace internal {
 class AppListController;
-}
+class Shell;
 
 namespace test {
 
@@ -31,7 +29,7 @@ class AppListControllerTestApi {
   app_list::AppListView* view();
 
  private:
-  internal::AppListController* app_list_controller_;  // Not owned.
+  AppListController* app_list_controller_;  // Not owned.
 
   DISALLOW_COPY_AND_ASSIGN(AppListControllerTestApi);
 };
diff --git a/ash/test/ash_test_base.h b/ash/test/ash_test_base.h
index c7bdbbb..193e71a 100644
--- a/ash/test/ash_test_base.h
+++ b/ash/test/ash_test_base.h
@@ -31,9 +31,7 @@ class EventGenerator;
 }  // namespace aura
 
 namespace ash {
-namespace internal {
 class DisplayManager;
-}  // namespace internal
 
 namespace test {
 
diff --git a/ash/test/display_manager_test_api.cc b/ash/test/display_manager_test_api.cc
index 794916b..b7c6f40 100644
--- a/ash/test/display_manager_test_api.cc
+++ b/ash/test/display_manager_test_api.cc
@@ -16,14 +16,14 @@
 namespace ash {
 namespace test {
 typedef std::vector<gfx::Display> DisplayList;
-typedef internal::DisplayInfo DisplayInfo;
+typedef DisplayInfo DisplayInfo;
 typedef std::vector<DisplayInfo> DisplayInfoList;
 
 namespace {
 
 std::vector<DisplayInfo> CreateDisplayInfoListFromString(
     const std::string specs,
-    internal::DisplayManager* display_manager) {
+    DisplayManager* display_manager) {
   std::vector<DisplayInfo> display_info_list;
   std::vector<std::string> parts;
   base::SplitString(specs, ',', &parts);
@@ -41,10 +41,8 @@ std::vector<DisplayInfo> CreateDisplayInfoListFromString(
 
 }  // namespace
 
-DisplayManagerTestApi::DisplayManagerTestApi(
-    internal::DisplayManager* display_manager)
-        : display_manager_(display_manager) {
-}
+DisplayManagerTestApi::DisplayManagerTestApi(DisplayManager* display_manager)
+    : display_manager_(display_manager) {}
 
 DisplayManagerTestApi::~DisplayManagerTestApi() {}
 
diff --git a/ash/test/display_manager_test_api.h b/ash/test/display_manager_test_api.h
index db47ab3..6c5d565 100644
--- a/ash/test/display_manager_test_api.h
+++ b/ash/test/display_manager_test_api.h
@@ -12,15 +12,13 @@
 #include "ui/display/display_constants.h"
 
 namespace ash {
-namespace internal {
 class DisplayManager;
-}  // internal
 
 namespace test {
 
 class DisplayManagerTestApi {
  public:
-  explicit DisplayManagerTestApi(internal::DisplayManager* display_manager);
+  explicit DisplayManagerTestApi(DisplayManager* display_manager);
   virtual ~DisplayManagerTestApi();
 
   // Update the display configuration as given in |display_specs|. The format of
@@ -42,7 +40,7 @@ class DisplayManagerTestApi {
       const std::vector<ui::ColorCalibrationProfile>& profiles);
 
  private:
-  internal::DisplayManager* display_manager_;  // not owned
+  DisplayManager* display_manager_;  // not owned
 
   DISALLOW_COPY_AND_ASSIGN(DisplayManagerTestApi);
 };
diff --git a/ash/test/overflow_bubble_view_test_api.cc b/ash/test/overflow_bubble_view_test_api.cc
index cfbfc73..59a1096 100644
--- a/ash/test/overflow_bubble_view_test_api.cc
+++ b/ash/test/overflow_bubble_view_test_api.cc
@@ -10,9 +10,8 @@ namespace ash {
 namespace test {
 
 OverflowBubbleViewTestAPI::OverflowBubbleViewTestAPI(
-    internal::OverflowBubbleView* bubble_view)
-    : bubble_view_(bubble_view) {
-}
+    OverflowBubbleView* bubble_view)
+    : bubble_view_(bubble_view) {}
 
 OverflowBubbleViewTestAPI::~OverflowBubbleViewTestAPI() {
 }
diff --git a/ash/test/overflow_bubble_view_test_api.h b/ash/test/overflow_bubble_view_test_api.h
index b789b73..2bd5f27 100644
--- a/ash/test/overflow_bubble_view_test_api.h
+++ b/ash/test/overflow_bubble_view_test_api.h
@@ -12,16 +12,13 @@ class Size;
 }
 
 namespace ash {
-
-namespace internal {
 class OverflowBubbleView;
-}
 
 namespace test {
 
 class OverflowBubbleViewTestAPI {
  public:
-  explicit OverflowBubbleViewTestAPI(internal::OverflowBubbleView* bubble_view);
+  explicit OverflowBubbleViewTestAPI(OverflowBubbleView* bubble_view);
   ~OverflowBubbleViewTestAPI();
 
   // Returns the total width of items included in ShelfView.
@@ -32,7 +29,7 @@ class OverflowBubbleViewTestAPI {
   void ScrollByXOffset(int x_offset);
 
  private:
-  internal::OverflowBubbleView* bubble_view_;
+  OverflowBubbleView* bubble_view_;
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubbleViewTestAPI);
 };
diff --git a/ash/test/shelf_test_api.cc b/ash/test/shelf_test_api.cc
index 0ce27f7..d050f73 100644
--- a/ash/test/shelf_test_api.cc
+++ b/ash/test/shelf_test_api.cc
@@ -16,9 +16,7 @@ ShelfTestAPI::ShelfTestAPI(Shelf* shelf)
 ShelfTestAPI::~ShelfTestAPI() {
 }
 
-internal::ShelfView* ShelfTestAPI::shelf_view() {
-  return shelf_->shelf_view_;
-}
+ShelfView* ShelfTestAPI::shelf_view() { return shelf_->shelf_view_; }
 
 void ShelfTestAPI::SetShelfDelegate(ShelfDelegate* delegate) {
   shelf_->delegate_ = delegate;
diff --git a/ash/test/shelf_test_api.h b/ash/test/shelf_test_api.h
index 48aafda..7c353ab 100644
--- a/ash/test/shelf_test_api.h
+++ b/ash/test/shelf_test_api.h
@@ -11,10 +11,7 @@ namespace ash {
 
 class Shelf;
 class ShelfDelegate;
-
-namespace internal {
 class ShelfView;
-}
 
 namespace test {
 
@@ -26,7 +23,7 @@ class ShelfTestAPI {
   ~ShelfTestAPI();
 
   // An accessor for |shelf_view|.
-  internal::ShelfView* shelf_view();
+  ShelfView* shelf_view();
 
   // Set ShelfDelegate.
   void SetShelfDelegate(ShelfDelegate* delegate);
diff --git a/ash/test/shelf_view_test_api.cc b/ash/test/shelf_view_test_api.cc
index 2147ada..d3d545c 100644
--- a/ash/test/shelf_view_test_api.cc
+++ b/ash/test/shelf_view_test_api.cc
@@ -36,9 +36,8 @@ class TestAPIAnimationObserver : public views::BoundsAnimatorObserver {
 namespace ash {
 namespace test {
 
-ShelfViewTestAPI::ShelfViewTestAPI(internal::ShelfView* shelf_view)
-    : shelf_view_(shelf_view) {
-}
+ShelfViewTestAPI::ShelfViewTestAPI(ShelfView* shelf_view)
+    : shelf_view_(shelf_view) {}
 
 ShelfViewTestAPI::~ShelfViewTestAPI() {
 }
@@ -47,13 +46,12 @@ int ShelfViewTestAPI::GetButtonCount() {
   return shelf_view_->view_model_->view_size();
 }
 
-internal::ShelfButton* ShelfViewTestAPI::GetButton(int index) {
+ShelfButton* ShelfViewTestAPI::GetButton(int index) {
   // App list button is not a ShelfButton.
   if (shelf_view_->model_->items()[index].type == ash::TYPE_APP_LIST)
     return NULL;
 
-  return static_cast<internal::ShelfButton*>(
-      shelf_view_->view_model_->view_at(index));
+  return static_cast<ShelfButton*>(shelf_view_->view_model_->view_at(index));
 }
 
 int ShelfViewTestAPI::GetFirstVisibleIndex() {
@@ -99,7 +97,7 @@ void ShelfViewTestAPI::RunMessageLoopUntilAnimationsDone() {
   shelf_view_->bounds_animator_->RemoveObserver(observer.get());
 }
 
-internal::OverflowBubble* ShelfViewTestAPI::overflow_bubble() {
+OverflowBubble* ShelfViewTestAPI::overflow_bubble() {
   return shelf_view_->overflow_bubble_.get();
 }
 
diff --git a/ash/test/shelf_view_test_api.h b/ash/test/shelf_view_test_api.h
index cff21f4..71853fd 100644
--- a/ash/test/shelf_view_test_api.h
+++ b/ash/test/shelf_view_test_api.h
@@ -14,28 +14,24 @@ class Size;
 }
 
 namespace ash {
-
-class ShelfDelegate;
-
-namespace internal {
 class OverflowBubble;
 class ShelfButton;
+class ShelfDelegate;
 class ShelfView;
-}
 
 namespace test {
 
 // Use the api in this class to test ShelfView.
 class ShelfViewTestAPI {
  public:
-  explicit ShelfViewTestAPI(internal::ShelfView* shelf_view);
+  explicit ShelfViewTestAPI(ShelfView* shelf_view);
   ~ShelfViewTestAPI();
 
   // Number of icons displayed.
   int GetButtonCount();
 
   // Retrieve the button at |index|.
-  internal::ShelfButton* GetButton(int index);
+  ShelfButton* GetButton(int index);
 
   // First visible button index.
   int GetFirstVisibleIndex();
@@ -60,10 +56,10 @@ class ShelfViewTestAPI {
   void RunMessageLoopUntilAnimationsDone();
 
   // An accessor for |shelf_view|.
-  internal::ShelfView* shelf_view() { return shelf_view_; }
+  ShelfView* shelf_view() { return shelf_view_; }
 
   // An accessor for overflow bubble.
-  internal::OverflowBubble* overflow_bubble();
+  OverflowBubble* overflow_bubble();
 
   // Returns the preferred size of |shelf_view_|.
   gfx::Size GetPreferredSize();
@@ -90,7 +86,7 @@ class ShelfViewTestAPI {
   bool DraggedItemFromOverflowToShelf();
 
  private:
-  internal::ShelfView* shelf_view_;
+  ShelfView* shelf_view_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfViewTestAPI);
 };
diff --git a/ash/test/shell_test_api.cc b/ash/test/shell_test_api.cc
index b343f60..b8c3e2d 100644
--- a/ash/test/shell_test_api.cc
+++ b/ash/test/shell_test_api.cc
@@ -18,7 +18,7 @@ namespace test {
 
 ShellTestApi::ShellTestApi(Shell* shell) : shell_(shell) {}
 
-internal::RootWindowLayoutManager* ShellTestApi::root_window_layout() {
+RootWindowLayoutManager* ShellTestApi::root_window_layout() {
   return shell_->GetPrimaryRootWindowController()->root_window_layout();
 }
 
@@ -27,17 +27,15 @@ ShellTestApi::input_method_event_filter() {
   return shell_->input_method_filter_.get();
 }
 
-internal::SystemGestureEventFilter*
-ShellTestApi::system_gesture_event_filter() {
+SystemGestureEventFilter* ShellTestApi::system_gesture_event_filter() {
   return shell_->system_gesture_filter_.get();
 }
 
-internal::WorkspaceController* ShellTestApi::workspace_controller() {
+WorkspaceController* ShellTestApi::workspace_controller() {
   return shell_->GetPrimaryRootWindowController()->workspace_controller();
 }
 
-internal::ScreenPositionController*
-ShellTestApi::screen_position_controller() {
+ScreenPositionController* ShellTestApi::screen_position_controller() {
   return shell_->screen_position_controller_.get();
 }
 
@@ -49,16 +47,15 @@ ShelfModel* ShellTestApi::shelf_model() {
   return shell_->shelf_model_.get();
 }
 
-internal::DragDropController* ShellTestApi::drag_drop_controller() {
+DragDropController* ShellTestApi::drag_drop_controller() {
   return shell_->drag_drop_controller_.get();
 }
 
-internal::AppListController* ShellTestApi::app_list_controller() {
+AppListController* ShellTestApi::app_list_controller() {
   return shell_->app_list_controller_.get();
 }
 
-internal::MaximizeModeWindowManager*
-ShellTestApi::maximize_mode_window_manager() {
+MaximizeModeWindowManager* ShellTestApi::maximize_mode_window_manager() {
   return shell_->maximize_mode_window_manager_.get();
 }
 
diff --git a/ash/test/shell_test_api.h b/ash/test/shell_test_api.h
index 12e40b7..68c3749 100644
--- a/ash/test/shell_test_api.h
+++ b/ash/test/shell_test_api.h
@@ -12,20 +12,17 @@ class InputMethodEventFilter;
 }  // namespace wm
 
 namespace ash {
-class AshNativeCursorManager;
-class ShelfDelegate;
-class ShelfModel;
-class Shell;
-
-namespace internal {
 class AppListController;
+class AshNativeCursorManager;
 class DragDropController;
 class MaximizeModeWindowManager;
 class RootWindowLayoutManager;
 class ScreenPositionController;
+class ShelfDelegate;
+class ShelfModel;
+class Shell;
 class SystemGestureEventFilter;
 class WorkspaceController;
-}  // namespace internal
 
 namespace test {
 
@@ -34,16 +31,16 @@ class ShellTestApi {
 public:
   explicit ShellTestApi(Shell* shell);
 
-  internal::RootWindowLayoutManager* root_window_layout();
+  RootWindowLayoutManager* root_window_layout();
   ::wm::InputMethodEventFilter* input_method_event_filter();
-  internal::SystemGestureEventFilter* system_gesture_event_filter();
-  internal::WorkspaceController* workspace_controller();
-  internal::ScreenPositionController* screen_position_controller();
+  SystemGestureEventFilter* system_gesture_event_filter();
+  WorkspaceController* workspace_controller();
+  ScreenPositionController* screen_position_controller();
   AshNativeCursorManager* ash_native_cursor_manager();
   ShelfModel* shelf_model();
-  internal::DragDropController* drag_drop_controller();
-  internal::AppListController* app_list_controller();
-  internal::MaximizeModeWindowManager* maximize_mode_window_manager();
+  DragDropController* drag_drop_controller();
+  AppListController* app_list_controller();
+  MaximizeModeWindowManager* maximize_mode_window_manager();
   void DisableOutputConfiguratorAnimation();
 
   // Set ShelfDelegate.
diff --git a/ash/test/test_shell_delegate.cc b/ash/test/test_shell_delegate.cc
index fe981d7..65545e7 100644
--- a/ash/test/test_shell_delegate.cc
+++ b/ash/test/test_shell_delegate.cc
@@ -120,7 +120,7 @@ SessionStateDelegate* TestShellDelegate::CreateSessionStateDelegate() {
 }
 
 AccessibilityDelegate* TestShellDelegate::CreateAccessibilityDelegate() {
-  return new internal::DefaultAccessibilityDelegate();
+  return new DefaultAccessibilityDelegate();
 }
 
 NewWindowDelegate* TestShellDelegate::CreateNewWindowDelegate() {
diff --git a/ash/touch/touch_hud_debug.cc b/ash/touch/touch_hud_debug.cc
index d2bee6d..983d86b 100644
--- a/ash/touch/touch_hud_debug.cc
+++ b/ash/touch/touch_hud_debug.cc
@@ -31,7 +31,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 
 const int kPointRadius = 20;
 const SkColor kColors[] = {
@@ -374,8 +373,8 @@ scoped_ptr<base::DictionaryValue> TouchHudDebug::GetAllAsDictionary() {
   aura::Window::Windows roots = Shell::GetInstance()->GetAllRootWindows();
   for (aura::Window::Windows::iterator iter = roots.begin();
       iter != roots.end(); ++iter) {
-    internal::RootWindowController* controller = GetRootWindowController(*iter);
-    internal::TouchHudDebug* hud = controller->touch_hud_debug();
+    RootWindowController* controller = GetRootWindowController(*iter);
+    TouchHudDebug* hud = controller->touch_hud_debug();
     if (hud) {
       scoped_ptr<base::ListValue> list = hud->GetLogAsList();
       if (!list->empty())
@@ -486,5 +485,4 @@ void TouchHudDebug::UnsetHudForRootWindowController(
   controller->set_touch_hud_debug(NULL);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/touch/touch_hud_debug.h b/ash/touch/touch_hud_debug.h
index 8449c20..2cac294 100644
--- a/ash/touch/touch_hud_debug.h
+++ b/ash/touch/touch_hud_debug.h
@@ -18,8 +18,6 @@ class View;
 }
 
 namespace ash {
-namespace internal {
-
 class TouchHudCanvas;
 class TouchLog;
 
@@ -81,7 +79,6 @@ class ASH_EXPORT TouchHudDebug : public TouchObserverHUD {
   DISALLOW_COPY_AND_ASSIGN(TouchHudDebug);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_HUD_DEBUG_H_
diff --git a/ash/touch/touch_hud_projection.cc b/ash/touch/touch_hud_projection.cc
index 615a372..3178559 100644
--- a/ash/touch/touch_hud_projection.cc
+++ b/ash/touch/touch_hud_projection.cc
@@ -15,7 +15,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 const int kPointRadius = 20;
 const SkColor kProjectionFillColor = SkColorSetRGB(0xF5, 0xF5, 0xDC);
@@ -185,5 +184,4 @@ void TouchHudProjection::UnsetHudForRootWindowController(
   controller->set_touch_hud_projection(NULL);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/touch/touch_hud_projection.h b/ash/touch/touch_hud_projection.h
index 59e86c8..8e30749 100644
--- a/ash/touch/touch_hud_projection.h
+++ b/ash/touch/touch_hud_projection.h
@@ -10,8 +10,6 @@
 #include "ash/touch/touch_observer_hud.h"
 
 namespace ash {
-namespace internal {
-
 class TouchPointView;
 
 // A heads-up display to show active touch points on the screen. As a derivative
@@ -40,7 +38,6 @@ class TouchHudProjection : public TouchObserverHUD {
   DISALLOW_COPY_AND_ASSIGN(TouchHudProjection);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_HUD_PROJECTION_H_
diff --git a/ash/touch/touch_observer_hud.cc b/ash/touch/touch_observer_hud.cc
index 923c34c..81908ab 100644
--- a/ash/touch/touch_observer_hud.cc
+++ b/ash/touch/touch_observer_hud.cc
@@ -16,7 +16,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 TouchObserverHUD::TouchObserverHUD(aura::Window* initial_root)
     : display_id_(GetRootWindowSettings(initial_root)->display_id),
@@ -37,9 +36,8 @@ TouchObserverHUD::TouchObserverHUD(aura::Window* initial_root)
   params.can_activate = false;
   params.accept_events = false;
   params.bounds = display.bounds();
-  params.parent = Shell::GetContainer(
-      root_window_,
-      internal::kShellWindowId_OverlayContainer);
+  params.parent =
+      Shell::GetContainer(root_window_, kShellWindowId_OverlayContainer);
   widget_->Init(params);
   widget_->SetContentsView(content);
   widget_->StackAtTop();
@@ -127,7 +125,7 @@ void TouchObserverHUD::OnDisplayConfigurationChanging() {
   views::Widget::ReparentNativeView(
       widget_->GetNativeView(),
       Shell::GetContainer(root_window_,
-                          internal::kShellWindowId_UnparentedControlContainer));
+                          kShellWindowId_UnparentedControlContainer));
 
   root_window_ = NULL;
 }
@@ -141,8 +139,7 @@ void TouchObserverHUD::OnDisplayConfigurationChanged() {
 
   views::Widget::ReparentNativeView(
       widget_->GetNativeView(),
-      Shell::GetContainer(root_window_,
-                          internal::kShellWindowId_OverlayContainer));
+      Shell::GetContainer(root_window_, kShellWindowId_OverlayContainer));
 
   RootWindowController* controller = GetRootWindowController(root_window_);
   SetHudForRootWindowController(controller);
@@ -150,5 +147,4 @@ void TouchObserverHUD::OnDisplayConfigurationChanged() {
   root_window_->AddPreTargetHandler(this);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/touch/touch_observer_hud.h b/ash/touch/touch_observer_hud.h
index 4e77390..b3a237b 100644
--- a/ash/touch/touch_observer_hud.h
+++ b/ash/touch/touch_observer_hud.h
@@ -20,7 +20,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // An event filter which handles system level gesture events. Objects of this
 // class manage their own lifetime.
@@ -86,7 +85,6 @@ class ASH_EXPORT TouchObserverHUD : public ui::EventHandler,
   DISALLOW_COPY_AND_ASSIGN(TouchObserverHUD);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_OBSERVER_HUD_H_
diff --git a/ash/touch/touch_observer_hud_unittest.cc b/ash/touch/touch_observer_hud_unittest.cc
index 98fb385..e0e133f 100644
--- a/ash/touch/touch_observer_hud_unittest.cc
+++ b/ash/touch/touch_observer_hud_unittest.cc
@@ -19,7 +19,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 class TouchHudTestBase : public test::AshTestBase {
  public:
@@ -163,22 +162,22 @@ class TouchHudTestBase : public test::AshTestBase {
     return GetDisplayController()->GetRootWindowForDisplayId(display.id());
   }
 
-  internal::RootWindowController* GetInternalRootController() {
+  RootWindowController* GetInternalRootController() {
     aura::Window* root = GetInternalRootWindow();
     return GetRootWindowController(root);
   }
 
-  internal::RootWindowController* GetExternalRootController() {
+  RootWindowController* GetExternalRootController() {
     aura::Window* root = GetExternalRootWindow();
     return GetRootWindowController(root);
   }
 
-  internal::RootWindowController* GetPrimaryRootController() {
+  RootWindowController* GetPrimaryRootController() {
     aura::Window* root = GetPrimaryRootWindow();
     return GetRootWindowController(root);
   }
 
-  internal::RootWindowController* GetSecondaryRootController() {
+  RootWindowController* GetSecondaryRootController() {
     aura::Window* root = GetSecondaryRootWindow();
     return GetRootWindowController(root);
   }
@@ -189,11 +188,11 @@ class TouchHudTestBase : public test::AshTestBase {
     return info;
   }
 
-  aura::Window* GetRootWindowForTouchHud(internal::TouchObserverHUD* hud) {
+  aura::Window* GetRootWindowForTouchHud(TouchObserverHUD* hud) {
     return hud->root_window_;
   }
 
-  views::Widget* GetWidgetForTouchHud(internal::TouchObserverHUD* hud) {
+  views::Widget* GetWidgetForTouchHud(TouchObserverHUD* hud) {
     return hud->widget_;
   }
 
@@ -224,8 +223,7 @@ class TouchHudDebugTest : public TouchHudTestBase {
   }
 
   void CheckInternalDisplay() {
-    EXPECT_NE(static_cast<internal::TouchObserverHUD*>(NULL),
-              GetInternalTouchHudDebug());
+    EXPECT_NE(static_cast<TouchObserverHUD*>(NULL), GetInternalTouchHudDebug());
     EXPECT_EQ(internal_display_id(), GetInternalTouchHudDebug()->display_id());
     EXPECT_EQ(GetInternalRootWindow(),
               GetRootWindowForTouchHud(GetInternalTouchHudDebug()));
@@ -238,8 +236,7 @@ class TouchHudDebugTest : public TouchHudTestBase {
   }
 
   void CheckExternalDisplay() {
-    EXPECT_NE(static_cast<internal::TouchHudDebug*>(NULL),
-              GetExternalTouchHudDebug());
+    EXPECT_NE(static_cast<TouchHudDebug*>(NULL), GetExternalTouchHudDebug());
     EXPECT_EQ(external_display_id(), GetExternalTouchHudDebug()->display_id());
     EXPECT_EQ(GetExternalRootWindow(),
               GetRootWindowForTouchHud(GetExternalTouchHudDebug()));
@@ -252,19 +249,19 @@ class TouchHudDebugTest : public TouchHudTestBase {
   }
 
  private:
-  internal::TouchHudDebug* GetInternalTouchHudDebug() {
+  TouchHudDebug* GetInternalTouchHudDebug() {
     return GetInternalRootController()->touch_hud_debug();
   }
 
-  internal::TouchHudDebug* GetExternalTouchHudDebug() {
+  TouchHudDebug* GetExternalTouchHudDebug() {
     return GetExternalRootController()->touch_hud_debug();
   }
 
-  internal::TouchHudDebug* GetPrimaryTouchHudDebug() {
+  TouchHudDebug* GetPrimaryTouchHudDebug() {
     return GetPrimaryRootController()->touch_hud_debug();
   }
 
-  internal::TouchHudDebug* GetSecondaryTouchHudDebug() {
+  TouchHudDebug* GetSecondaryTouchHudDebug() {
     return GetSecondaryRootController()->touch_hud_debug();
   }
 
@@ -284,7 +281,7 @@ class TouchHudProjectionTest : public TouchHudTestBase {
     Shell::GetInstance()->SetTouchHudProjectionEnabled(false);
   }
 
-  internal::TouchHudProjection* GetInternalTouchHudProjection() {
+  TouchHudProjection* GetInternalTouchHudProjection() {
     return GetInternalRootController()->touch_hud_projection();
   }
 
@@ -498,7 +495,7 @@ TEST_F(TouchHudProjectionTest, TouchMoveRelease) {
   EXPECT_EQ(NULL, GetInternalTouchHudProjection());
 
   EnableTouchHudProjection();
-  EXPECT_NE(static_cast<internal::TouchHudProjection*>(NULL),
+  EXPECT_NE(static_cast<TouchHudProjection*>(NULL),
             GetInternalTouchHudProjection());
   EXPECT_EQ(0, GetInternalTouchPointsCount());
 
@@ -523,7 +520,7 @@ TEST_F(TouchHudProjectionTest, TouchMoveCancel) {
   EXPECT_EQ(NULL, GetInternalTouchHudProjection());
 
   EnableTouchHudProjection();
-  EXPECT_NE(static_cast<internal::TouchHudProjection*>(NULL),
+  EXPECT_NE(static_cast<TouchHudProjection*>(NULL),
             GetInternalTouchHudProjection());
   EXPECT_EQ(0, GetInternalTouchPointsCount());
 
@@ -547,7 +544,7 @@ TEST_F(TouchHudProjectionTest, DoubleTouch) {
   EXPECT_EQ(NULL, GetInternalTouchHudProjection());
 
   EnableTouchHudProjection();
-  EXPECT_NE(static_cast<internal::TouchHudProjection*>(NULL),
+  EXPECT_NE(static_cast<TouchHudProjection*>(NULL),
             GetInternalTouchHudProjection());
   EXPECT_EQ(0, GetInternalTouchPointsCount());
 
@@ -581,7 +578,7 @@ TEST_F(TouchHudProjectionTest, DisableWhileTouching) {
   EXPECT_EQ(NULL, GetInternalTouchHudProjection());
 
   EnableTouchHudProjection();
-  EXPECT_NE(static_cast<internal::TouchHudProjection*>(NULL),
+  EXPECT_NE(static_cast<TouchHudProjection*>(NULL),
             GetInternalTouchHudProjection());
   EXPECT_EQ(0, GetInternalTouchPointsCount());
 
@@ -593,5 +590,4 @@ TEST_F(TouchHudProjectionTest, DisableWhileTouching) {
   EXPECT_EQ(NULL, GetInternalTouchHudProjection());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/always_on_top_controller.cc b/ash/wm/always_on_top_controller.cc
index c0f7356..ab397c9 100644
--- a/ash/wm/always_on_top_controller.cc
+++ b/ash/wm/always_on_top_controller.cc
@@ -10,7 +10,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 AlwaysOnTopController::AlwaysOnTopController()
     : always_on_top_container_(NULL) {
@@ -68,5 +67,4 @@ void AlwaysOnTopController::OnWindowDestroyed(aura::Window* window) {
     always_on_top_container_ = NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/always_on_top_controller.h b/ash/wm/always_on_top_controller.h
index 57fbf99..fda496a 100644
--- a/ash/wm/always_on_top_controller.h
+++ b/ash/wm/always_on_top_controller.h
@@ -14,7 +14,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
 
 // AlwaysOnTopController puts window into proper containers based on its
 // 'AlwaysOnTop' property. That is, putting a window into the worskpace
@@ -45,7 +44,6 @@ class AlwaysOnTopController : public aura::WindowObserver {
   DISALLOW_COPY_AND_ASSIGN(AlwaysOnTopController);
 };
 
-}  // namepsace internal
 }  // namepsace ash
 
 #endif  // ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_
diff --git a/ash/wm/app_list_controller.cc b/ash/wm/app_list_controller.cc
index b00319c..cf5e04d 100644
--- a/ash/wm/app_list_controller.cc
+++ b/ash/wm/app_list_controller.cc
@@ -27,8 +27,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Duration for show/hide animation in milliseconds.
@@ -295,12 +293,12 @@ void AppListController::ProcessLocatedEvent(ui::LocatedEvent* event) {
     RootWindowController* root_controller =
         GetRootWindowController(target->GetRootWindow());
     if (root_controller) {
-      aura::Window* menu_container = root_controller->GetContainer(
-          internal::kShellWindowId_MenuContainer);
+      aura::Window* menu_container =
+          root_controller->GetContainer(kShellWindowId_MenuContainer);
       if (menu_container->Contains(target))
         return;
       aura::Window* keyboard_container = root_controller->GetContainer(
-          internal::kShellWindowId_VirtualKeyboardContainer);
+          kShellWindowId_VirtualKeyboardContainer);
       if (keyboard_container->Contains(target))
         return;
     }
@@ -437,5 +435,4 @@ void AppListController::TransitionChanged() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/app_list_controller.h b/ash/wm/app_list_controller.h
index 2e41758..c2eb0ad 100644
--- a/ash/wm/app_list_controller.h
+++ b/ash/wm/app_list_controller.h
@@ -33,8 +33,6 @@ namespace test {
 class AppListControllerTestApi;
 }
 
-namespace internal {
-
 // AppListController is a controller that manages app list UI for shell.
 // It creates AppListView and schedules showing/hiding animation.
 // While the UI is visible, it monitors things such as app list widget's
@@ -139,7 +137,6 @@ class AppListController : public ui::EventHandler,
   DISALLOW_COPY_AND_ASSIGN(AppListController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_APP_LIST_CONTROLLER_H_
diff --git a/ash/wm/app_list_controller_unittest.cc b/ash/wm/app_list_controller_unittest.cc
index 7295c67..9808d8b 100644
--- a/ash/wm/app_list_controller_unittest.cc
+++ b/ash/wm/app_list_controller_unittest.cc
@@ -34,8 +34,7 @@ TEST_F(AppListControllerTest, RemainVisibleWhenFocusingToApplistContainer) {
   EXPECT_TRUE(Shell::GetInstance()->GetAppListTargetVisibility());
 
   aura::Window* applist_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_AppListContainer);
+      Shell::GetPrimaryRootWindow(), kShellWindowId_AppListContainer);
   scoped_ptr<aura::Window> window(
       aura::test::CreateTestWindowWithId(0, applist_container));
   wm::ActivateWindow(window.get());
diff --git a/ash/wm/ash_focus_rules.cc b/ash/wm/ash_focus_rules.cc
index efeaaca..c38c7d3 100644
--- a/ash/wm/ash_focus_rules.cc
+++ b/ash/wm/ash_focus_rules.cc
@@ -16,23 +16,22 @@ namespace {
 // These are the list of container ids of containers which may contain windows
 // that need to be activated in the order that they should be activated.
 const int kWindowContainerIds[] = {
-    internal::kShellWindowId_OverlayContainer,
-    internal::kShellWindowId_LockSystemModalContainer,
-    internal::kShellWindowId_SettingBubbleContainer,
-    internal::kShellWindowId_LockScreenContainer,
-    internal::kShellWindowId_SystemModalContainer,
-    internal::kShellWindowId_AlwaysOnTopContainer,
-    internal::kShellWindowId_AppListContainer,
-    internal::kShellWindowId_DefaultContainer,
+    kShellWindowId_OverlayContainer,
+    kShellWindowId_LockSystemModalContainer,
+    kShellWindowId_SettingBubbleContainer,
+    kShellWindowId_LockScreenContainer,
+    kShellWindowId_SystemModalContainer,
+    kShellWindowId_AlwaysOnTopContainer,
+    kShellWindowId_AppListContainer,
+    kShellWindowId_DefaultContainer,
 
     // Docked, panel, launcher and status are intentionally checked after other
     // containers even though these layers are higher. The user expects their
     // windows to be focused before these elements.
-    internal::kShellWindowId_DockedContainer,
-    internal::kShellWindowId_PanelContainer,
-    internal::kShellWindowId_ShelfContainer,
-    internal::kShellWindowId_StatusContainer,
-};
+    kShellWindowId_DockedContainer,
+    kShellWindowId_PanelContainer,
+    kShellWindowId_ShelfContainer,
+    kShellWindowId_StatusContainer, };
 
 bool BelongsToContainerWithEqualOrGreaterId(const aura::Window* window,
                                             int container_id) {
@@ -58,7 +57,7 @@ AshFocusRules::~AshFocusRules() {
 // AshFocusRules, ::wm::FocusRules:
 
 bool AshFocusRules::SupportsChildActivation(aura::Window* window) const {
-  if (window->id() == internal::kShellWindowId_DefaultContainer)
+  if (window->id() == kShellWindowId_DefaultContainer)
     return true;
 
   for (size_t i = 0; i < arraysize(kWindowContainerIds); i++) {
@@ -78,9 +77,9 @@ bool AshFocusRules::IsWindowConsideredVisibleForActivation(
   if (wm::GetWindowState(window)->IsMinimized())
     return true;
 
-  return window->TargetVisibility() && (window->parent()->id() ==
-      internal::kShellWindowId_DefaultContainer || window->parent()->id() ==
-      internal::kShellWindowId_LockScreenContainer);
+  return window->TargetVisibility() &&
+         (window->parent()->id() == kShellWindowId_DefaultContainer ||
+          window->parent()->id() == kShellWindowId_LockScreenContainer);
 }
 
 bool AshFocusRules::CanActivateWindow(aura::Window* window) const {
@@ -93,7 +92,7 @@ bool AshFocusRules::CanActivateWindow(aura::Window* window) const {
 
   if (Shell::GetInstance()->IsSystemModalWindowOpen()) {
     return BelongsToContainerWithEqualOrGreaterId(
-          window, internal::kShellWindowId_SystemModalContainer);
+        window, kShellWindowId_SystemModalContainer);
   }
 
   return true;
diff --git a/ash/wm/ash_native_cursor_manager_interactive_uitest.cc b/ash/wm/ash_native_cursor_manager_interactive_uitest.cc
index 771b725..48d2af5 100644
--- a/ash/wm/ash_native_cursor_manager_interactive_uitest.cc
+++ b/ash/wm/ash_native_cursor_manager_interactive_uitest.cc
@@ -50,10 +50,10 @@ class AshNativeCursorManagerTest : public test::AshTestBase {
 
 namespace {
 
-internal::DisplayInfo CreateDisplayInfo(int64 id,
-                                        const gfx::Rect& bounds,
-                                        float device_scale_factor) {
-  internal::DisplayInfo info(id, "", false);
+DisplayInfo CreateDisplayInfo(int64 id,
+                              const gfx::Rect& bounds,
+                              float device_scale_factor) {
+  DisplayInfo info(id, "", false);
   info.SetBounds(bounds);
   info.set_device_scale_factor(device_scale_factor);
   return info;
@@ -93,13 +93,12 @@ TEST_F(AshNativeCursorManagerTest, MAYBE_CursorChangeOnEnterNotify) {
   CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
   test::CursorManagerTestApi test_api(cursor_manager);
 
-  internal::DisplayManager* display_manager =
-      Shell::GetInstance()->display_manager();
-  internal::DisplayInfo display_info1 =
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+  DisplayInfo display_info1 =
       CreateDisplayInfo(10, gfx::Rect(0, 0, 500, 300), 1.0f);
-  internal::DisplayInfo display_info2 =
+  DisplayInfo display_info2 =
       CreateDisplayInfo(20, gfx::Rect(500, 0, 500, 300), 2.0f);
-  std::vector<internal::DisplayInfo> display_info_list;
+  std::vector<DisplayInfo> display_info_list;
   display_info_list.push_back(display_info1);
   display_info_list.push_back(display_info2);
   display_manager->OnNativeDisplaysChanged(display_info_list);
diff --git a/ash/wm/boot_splash_screen_chromeos.cc b/ash/wm/boot_splash_screen_chromeos.cc
index df57654..c9516d7 100644
--- a/ash/wm/boot_splash_screen_chromeos.cc
+++ b/ash/wm/boot_splash_screen_chromeos.cc
@@ -14,7 +14,6 @@
 #include "ui/gfx/canvas.h"
 
 namespace ash {
-namespace internal {
 
 // ui::LayerDelegate that copies the aura host window's content to a ui::Layer.
 class BootSplashScreen::CopyHostContentLayerDelegate
@@ -72,5 +71,4 @@ void BootSplashScreen::StartHideAnimation(base::TimeDelta duration) {
   layer_->SetOpacity(0.0f);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/boot_splash_screen_chromeos.h b/ash/wm/boot_splash_screen_chromeos.h
index 7ba2809..a127a51 100644
--- a/ash/wm/boot_splash_screen_chromeos.h
+++ b/ash/wm/boot_splash_screen_chromeos.h
@@ -21,7 +21,6 @@ class LayerDelegate;
 }
 
 namespace ash {
-namespace internal {
 
 // BootSplashScreen manages a ui::Layer, stacked at the top of the root layer's
 // children, that displays a copy of the initial contents of the host window.
@@ -47,7 +46,6 @@ class BootSplashScreen {
   DISALLOW_COPY_AND_ASSIGN(BootSplashScreen);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_
diff --git a/ash/wm/default_state.cc b/ash/wm/default_state.cc
index 354e99e..b5aec38 100644
--- a/ash/wm/default_state.cc
+++ b/ash/wm/default_state.cc
@@ -31,7 +31,7 @@ const float kMinimumPercentOnScreenArea = 0.3f;
 
 bool IsPanel(aura::Window* window) {
   return window->parent() &&
-      window->parent()->id() == internal::kShellWindowId_PanelContainer;
+         window->parent()->id() == kShellWindowId_PanelContainer;
 }
 
 void MoveToDisplayForRestore(WindowState* window_state) {
diff --git a/ash/wm/dock/dock_types.h b/ash/wm/dock/dock_types.h
index e2ebaab..c203a67 100644
--- a/ash/wm/dock/dock_types.h
+++ b/ash/wm/dock/dock_types.h
@@ -7,8 +7,6 @@
 
 namespace ash {
 
-namespace internal {
-
 // Possible values of which side of the screen the windows are docked at.
 // This is used by DockedwindowLayoutManager and DockedWindowResizer to
 // implement docking behavior including magnetism while dragging windows into
@@ -49,7 +47,6 @@ enum DockedActionSource {
   DOCKED_ACTION_SOURCE_COUNT,
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_DOCK_DOCK_TYPES_H_
diff --git a/ash/wm/dock/docked_window_layout_manager.cc b/ash/wm/dock/docked_window_layout_manager.cc
index 04273e1b..add93f4 100644
--- a/ash/wm/dock/docked_window_layout_manager.cc
+++ b/ash/wm/dock/docked_window_layout_manager.cc
@@ -41,7 +41,6 @@
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
-namespace internal {
 
 // Minimum, maximum width of the dock area and a width of the gap
 // static
@@ -58,7 +57,7 @@ const int kFadeDurationMs = 60;
 const int kMinimizeDurationMs = 720;
 
 class DockedBackgroundWidget : public views::Widget,
-                               public internal::BackgroundAnimatorDelegate {
+                               public BackgroundAnimatorDelegate {
  public:
   explicit DockedBackgroundWidget(aura::Window* container)
       : alignment_(DOCKED_ALIGNMENT_NONE),
@@ -147,7 +146,7 @@ class DockedBackgroundWidget : public views::Widget,
     set_focus_on_creation(false);
     Init(params);
     SetVisibilityChangedAnimationsEnabled(false);
-    GetNativeWindow()->SetProperty(internal::kStayInSameRootWindowKey, true);
+    GetNativeWindow()->SetProperty(kStayInSameRootWindowKey, true);
     opaque_background_.SetColor(SK_ColorBLACK);
     opaque_background_.SetBounds(gfx::Rect(GetWindowBoundsInScreen().size()));
     opaque_background_.SetOpacity(0.0f);
@@ -194,7 +193,7 @@ class DockedBackgroundWidget : public views::Widget,
   DockedAlignment alignment_;
 
   // The animator for the background transitions.
-  internal::BackgroundAnimator background_animator_;
+  BackgroundAnimator background_animator_;
 
   // The alpha to use for drawing image assets covering the docked background.
   int alpha_;
@@ -712,8 +711,8 @@ void DockedWindowLayoutManager::SetChildBounds(
   SetChildBoundsDirect(child, requested_bounds);
   if (IsPopupOrTransient(child))
     return;
-  ShelfLayoutManager* shelf_layout = internal::ShelfLayoutManager::ForShelf(
-      dock_container_);
+  ShelfLayoutManager* shelf_layout =
+      ShelfLayoutManager::ForShelf(dock_container_);
   if (shelf_layout)
     shelf_layout->UpdateVisibilityState();
 }
@@ -1316,5 +1315,4 @@ void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/dock/docked_window_layout_manager.h b/ash/wm/dock/docked_window_layout_manager.h
index 18569d8..030d888 100644
--- a/ash/wm/dock/docked_window_layout_manager.h
+++ b/ash/wm/dock/docked_window_layout_manager.h
@@ -38,12 +38,10 @@ class Widget;
 }
 
 namespace ash {
-class Shelf;
-
-namespace internal {
 class DockedBackgroundWidget;
 class DockedWindowLayoutManagerObserver;
 class DockedWindowResizerTest;
+class Shelf;
 class ShelfLayoutManager;
 class WorkspaceController;
 
@@ -310,7 +308,6 @@ class ASH_EXPORT DockedWindowLayoutManager
   DISALLOW_COPY_AND_ASSIGN(DockedWindowLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_
diff --git a/ash/wm/dock/docked_window_layout_manager_observer.h b/ash/wm/dock/docked_window_layout_manager_observer.h
index f529753..69839d1 100644
--- a/ash/wm/dock/docked_window_layout_manager_observer.h
+++ b/ash/wm/dock/docked_window_layout_manager_observer.h
@@ -12,7 +12,6 @@ class Rect;
 }
 
 namespace ash {
-namespace internal {
 
 // Observers to the DockedWindowLayoutManager are notified of significant
 // events that occur with the docked windows, such as the bounds change.
@@ -35,7 +34,6 @@ class ASH_EXPORT DockedWindowLayoutManagerObserver {
   virtual ~DockedWindowLayoutManagerObserver() {}
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // UI_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_OBSERVER_H_
diff --git a/ash/wm/dock/docked_window_layout_manager_unittest.cc b/ash/wm/dock/docked_window_layout_manager_unittest.cc
index 0d74301..48db154 100644
--- a/ash/wm/dock/docked_window_layout_manager_unittest.cc
+++ b/ash/wm/dock/docked_window_layout_manager_unittest.cc
@@ -35,7 +35,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 class DockedWindowLayoutManagerTest
     : public test::AshTestBase,
@@ -101,7 +100,7 @@ class DockedWindowLayoutManagerTest
 
   aura::Window* GetPanelContainer(aura::Window* panel) {
     return Shell::GetContainer(panel->GetRootWindow(),
-                               internal::kShellWindowId_PanelContainer);
+                               kShellWindowId_PanelContainer);
   }
 
   static WindowResizer* CreateSomeWindowResizer(
@@ -149,8 +148,8 @@ class DockedWindowLayoutManagerTest
   // parent.
   int CorrectContainerIdDuringDrag() {
     if (window_type_ == ui::wm::WINDOW_TYPE_PANEL)
-      return internal::kShellWindowId_PanelContainer;
-    return internal::kShellWindowId_DockedContainer;
+      return kShellWindowId_PanelContainer;
+    return kShellWindowId_DockedContainer;
   }
 
   // Test dragging the window vertically (to detach if it is a panel) and then
@@ -202,7 +201,7 @@ class DockedWindowLayoutManagerTest
 
     // x-coordinate can get adjusted by snapping or sticking.
     // y-coordinate could be changed by possible automatic layout if docked.
-    if (window->parent()->id() != internal::kShellWindowId_DockedContainer &&
+    if (window->parent()->id() != kShellWindowId_DockedContainer &&
         !wm::GetWindowState(window)->HasRestoreBounds()) {
       EXPECT_EQ(initial_bounds.y() + dy, window->GetBoundsInScreen().y());
     }
@@ -234,7 +233,7 @@ TEST_P(DockedWindowLayoutManagerTest, AddOneWindow) {
   EXPECT_EQ(window->GetRootWindow()->bounds().right(),
             window->GetBoundsInScreen().right());
   EXPECT_EQ(ideal_width(), window->bounds().width());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Tests that with a window docked on the left the auto-placing logic in
@@ -250,7 +249,7 @@ TEST_P(DockedWindowLayoutManagerTest, AutoPlacingLeft) {
   // The window should be attached and snapped to the right side of the screen.
   EXPECT_EQ(window->GetRootWindow()->bounds().x(),
             window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   DockedWindowLayoutManager* manager = static_cast<DockedWindowLayoutManager*>(
       window->parent()->layout_manager());
@@ -300,7 +299,7 @@ TEST_P(DockedWindowLayoutManagerTest, AutoPlacingRight) {
   // The window should be attached and snapped to the right side of the screen.
   EXPECT_EQ(window->GetRootWindow()->bounds().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   DockedWindowLayoutManager* manager = static_cast<DockedWindowLayoutManager*>(
       window->parent()->layout_manager());
@@ -354,7 +353,7 @@ TEST_P(DockedWindowLayoutManagerTest, AutoPlacingRightSecondScreen) {
   // The window should be attached and snapped to the right side of the screen.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   DockedWindowLayoutManager* manager = static_cast<DockedWindowLayoutManager*>(
       window->parent()->layout_manager());
@@ -405,10 +404,10 @@ TEST_P(DockedWindowLayoutManagerTest, AddTwoWindows) {
   // The windows should be attached and snapped to the right side of the screen.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // Test that the gaps differ at most by a single pixel.
   gfx::Rect work_area =
@@ -434,10 +433,10 @@ TEST_P(DockedWindowLayoutManagerTest, TwoWindowsDragging) {
   // The windows should be attached and snapped to the right side of the screen.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // Drag w2 above w1.
   ASSERT_NO_FATAL_FAILURE(DragStartAtOffsetFromwindowOrigin(w2.get(), 0, 20));
@@ -471,13 +470,13 @@ TEST_P(DockedWindowLayoutManagerTest, ThreeWindowsDragging) {
   // All windows should be attached and snapped to the right side of the screen.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(w3->GetRootWindow()->bounds().right(),
             w3->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w3->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w3->parent()->id());
 
   // Test that the top and bottom windows are clamped in work area and
   // that the gaps between the windows differ at most by a pixel.
@@ -540,13 +539,13 @@ TEST_P(DockedWindowLayoutManagerTest, ThreeWindowsDraggingSecondScreen) {
   // All windows should be attached and snapped to the right side of the screen.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(w3->GetRootWindow()->bounds().right(),
             w3->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w3->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w3->parent()->id());
 
   gfx::Rect work_area =
       Shell::GetScreen()->GetDisplayNearestWindow(w1.get()).work_area();
@@ -685,7 +684,7 @@ TEST_P(DockedWindowLayoutManagerTest, WidthMoreThanMax) {
   // The window should not get docked even though it is dragged past the edge.
   EXPECT_NE(window->GetRootWindow()->bounds().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_NE(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_NE(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Docks three windows and tests that the very first window gets minimized.
@@ -703,16 +702,16 @@ TEST_P(DockedWindowLayoutManagerTest, ThreeWindowsMinimize) {
   // The last two windows should be attached and snapped to the right edge.
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(w3->GetRootWindow()->bounds().right(),
             w3->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w3->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w3->parent()->id());
 
   // The first window should get minimized but parented by the dock container.
   EXPECT_TRUE(wm::GetWindowState(w1.get())->IsMinimized());
   EXPECT_TRUE(wm::GetWindowState(w2.get())->IsNormalStateType());
   EXPECT_TRUE(wm::GetWindowState(w3.get())->IsNormalStateType());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 }
 
 // Docks up to three windows and tests that they split vertical space.
@@ -729,10 +728,10 @@ TEST_P(DockedWindowLayoutManagerTest, ThreeWindowsSplitHeightEvenly) {
   // The two windows should be attached and snapped to the right edge.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // The two windows should be same size vertically and almost 1/2 of work area.
   gfx::Rect work_area =
@@ -748,9 +747,9 @@ TEST_P(DockedWindowLayoutManagerTest, ThreeWindowsSplitHeightEvenly) {
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w3.get(), 300);
 
   // All three windows should be docked and snapped to the right edge.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w3->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w3->parent()->id());
 
   // All windows should be near same size vertically and about 1/3 of work area.
   EXPECT_NEAR(w1->GetBoundsInScreen().height(),
@@ -786,10 +785,10 @@ TEST_P(DockedWindowLayoutManagerTest, TwoWindowsHeightRestrictions) {
   // The two windows should be attached and snapped to the right edge.
   EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(w2->GetRootWindow()->bounds().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // The two windows should have their heights restricted.
   EXPECT_EQ(300, w1->GetBoundsInScreen().height());
@@ -824,7 +823,7 @@ TEST_P(DockedWindowLayoutManagerTest, DisplayDisconnectionMovesDocked) {
   // Its height should grow to match the new work area.
   EXPECT_EQ(window->GetRootWindow()->bounds().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
   EXPECT_EQ(ideal_width(), window->bounds().width());
   gfx::Rect work_area =
       Shell::GetScreen()->GetDisplayNearestWindow(window.get()).work_area();
@@ -836,5 +835,5 @@ INSTANTIATE_TEST_CASE_P(NormalOrPanel,
                         DockedWindowLayoutManagerTest,
                         testing::Values(ui::wm::WINDOW_TYPE_NORMAL,
                                         ui::wm::WINDOW_TYPE_PANEL));
-}  // namespace internal
+
 }  // namespace ash
diff --git a/ash/wm/dock/docked_window_resizer.cc b/ash/wm/dock/docked_window_resizer.cc
index 9f3efae..d6f04d0 100644
--- a/ash/wm/dock/docked_window_resizer.cc
+++ b/ash/wm/dock/docked_window_resizer.cc
@@ -32,8 +32,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 DockedWindowLayoutManager* GetDockedLayoutManagerAtPoint(
@@ -320,5 +318,4 @@ DockedAction DockedWindowResizer::MaybeReparentWindowOnDragCompletion(
   return action;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/dock/docked_window_resizer.h b/ash/wm/dock/docked_window_resizer.h
index 7797424..da62e2a 100644
--- a/ash/wm/dock/docked_window_resizer.h
+++ b/ash/wm/dock/docked_window_resizer.h
@@ -21,8 +21,6 @@ class RootWindow;
 }
 
 namespace ash {
-namespace internal {
-
 class DockedWindowLayoutManager;
 
 // DockWindowResizer is used by ToplevelWindowEventFilter to handle dragging,
@@ -77,8 +75,8 @@ class ASH_EXPORT DockedWindowResizer : public WindowResizer {
   scoped_ptr<WindowResizer> next_window_resizer_;
 
   // Dock container window.
-  internal::DockedWindowLayoutManager* dock_layout_;
-  internal::DockedWindowLayoutManager* initial_dock_layout_;
+  DockedWindowLayoutManager* dock_layout_;
+  DockedWindowLayoutManager* initial_dock_layout_;
 
   // Set to true once Drag() is invoked and the bounds of the window change.
   bool did_move_or_resize_;
@@ -98,7 +96,6 @@ class ASH_EXPORT DockedWindowResizer : public WindowResizer {
   DISALLOW_COPY_AND_ASSIGN(DockedWindowResizer);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_DOCK_DOCK_WINDOW_RESIZER_H_
diff --git a/ash/wm/dock/docked_window_resizer_unittest.cc b/ash/wm/dock/docked_window_resizer_unittest.cc
index 65f7658..82489dc 100644
--- a/ash/wm/dock/docked_window_resizer_unittest.cc
+++ b/ash/wm/dock/docked_window_resizer_unittest.cc
@@ -37,7 +37,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
 
 class DockedWindowResizerTest
     : public test::AshTestBase,
@@ -83,11 +82,9 @@ class DockedWindowResizerTest
       test::TestShelfDelegate* shelf_delegate =
           test::TestShelfDelegate::instance();
       shelf_delegate->AddShelfItem(window);
-      PanelLayoutManager* manager =
-          static_cast<PanelLayoutManager*>(
-              Shell::GetContainer(window->GetRootWindow(),
-                                  internal::kShellWindowId_PanelContainer)->
-                  layout_manager());
+      PanelLayoutManager* manager = static_cast<PanelLayoutManager*>(
+          Shell::GetContainer(window->GetRootWindow(),
+                              kShellWindowId_PanelContainer)->layout_manager());
       manager->Relayout();
     }
     return window;
@@ -170,8 +167,8 @@ class DockedWindowResizerTest
   // during drags.
   int CorrectContainerIdDuringDrag() {
     if (window_type_ == ui::wm::WINDOW_TYPE_PANEL)
-      return internal::kShellWindowId_PanelContainer;
-    return internal::kShellWindowId_DockedContainer;
+      return kShellWindowId_PanelContainer;
+    return kShellWindowId_DockedContainer;
   }
 
   // Test dragging the window vertically (to detach if it is a panel) and then
@@ -232,7 +229,7 @@ class DockedWindowResizerTest
 
     // x-coordinate can get adjusted by snapping or sticking.
     // y-coordinate could be changed by possible automatic layout if docked.
-    if (window->parent()->id() != internal::kShellWindowId_DockedContainer &&
+    if (window->parent()->id() != kShellWindowId_DockedContainer &&
         !wm::GetWindowState(window)->HasRestoreBounds()) {
       EXPECT_EQ(initial_bounds.y() + dy, window->GetBoundsInScreen().y());
     }
@@ -271,7 +268,7 @@ TEST_P(DockedWindowResizerTest, AttachRightPrecise) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Verifies a window can be dragged and attached to the dock
@@ -286,7 +283,7 @@ TEST_P(DockedWindowResizerTest, AttachRightOvershoot) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Verifies a window can be dragged and then if a pointer is not quite reaching
@@ -312,8 +309,7 @@ TEST_P(DockedWindowResizerTest, AttachRightUndershoot) {
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right() +
             window->bounds().width() - kGrabOffsetX - kUndershootBy - 1,
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Verifies a window can be dragged and attached to the dock.
@@ -327,7 +323,7 @@ TEST_P(DockedWindowResizerTest, AttachLeftPrecise) {
   // The window should be docked at the left edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().x(),
             window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Verifies a window can be dragged and attached to the dock
@@ -342,7 +338,7 @@ TEST_P(DockedWindowResizerTest, AttachLeftOvershoot) {
   // The window should be docked at the left edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().x(),
             window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Verifies a window can be dragged and then if a pointer is not quite reaching
@@ -358,8 +354,7 @@ TEST_P(DockedWindowResizerTest, AttachLeftUndershoot) {
   // The window should be crossing the screen edge but not docked.
   int expected_x = initial_bounds.x() - initial_location_in_parent().x() + 1;
   EXPECT_EQ(expected_x, window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Dock on the right side, change shelf alignment, check that windows move to
@@ -374,7 +369,7 @@ TEST_P(DockedWindowResizerTest, AttachRightChangeShelf) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // set launcher shelf to be aligned on the right
   ash::Shell* shell = ash::Shell::GetInstance();
@@ -383,7 +378,7 @@ TEST_P(DockedWindowResizerTest, AttachRightChangeShelf) {
   // The window should have moved and get attached to the left dock.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().x(),
             window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // set launcher shelf to be aligned on the left
   shell->SetShelfAlignment(SHELF_ALIGNMENT_LEFT,
@@ -391,7 +386,7 @@ TEST_P(DockedWindowResizerTest, AttachRightChangeShelf) {
   // The window should have moved and get attached to the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // set launcher shelf to be aligned at the bottom
   shell->SetShelfAlignment(SHELF_ALIGNMENT_BOTTOM,
@@ -399,7 +394,7 @@ TEST_P(DockedWindowResizerTest, AttachRightChangeShelf) {
   // The window should stay in the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 }
 
 // Dock on the right side, try to undock, then drag more to really undock
@@ -416,7 +411,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetach) {
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
   EXPECT_EQ(ideal_width(), window->GetBoundsInScreen().width());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Try to detach by dragging left less than kSnapToDockDistance.
   // The window should stay docked.
@@ -429,7 +424,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetach) {
   // The window should be still attached to the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Try to detach by dragging left by kSnapToDockDistance or more.
   // The window should get undocked.
@@ -442,8 +437,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetach) {
 
   // The window should be floating on the desktop again and moved to the left.
   EXPECT_EQ(left_edge - 32, window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Dock on the right side, and undock by dragging the right edge of the window
@@ -463,7 +457,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetachDragRightEdgeOfHeader) {
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
   EXPECT_EQ(ideal_width(), window->GetBoundsInScreen().width());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Try to detach by dragging left less than kSnapToDockDistance.
   // The window should stay docked.
@@ -476,7 +470,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetachDragRightEdgeOfHeader) {
   // The window should be still attached to the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Try to detach by dragging left by kSnapToDockDistance or more.
   // The window should get undocked.
@@ -489,8 +483,7 @@ TEST_P(DockedWindowResizerTest, AttachTryDetachDragRightEdgeOfHeader) {
 
   // The window should be floating on the desktop again and moved to the left.
   EXPECT_EQ(left_edge - 32, window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Minimize a docked window, then restore it and check that it is still docked.
@@ -504,7 +497,7 @@ TEST_P(DockedWindowResizerTest, AttachMinimizeRestore) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   wm::WindowState* window_state = wm::GetWindowState(window.get());
   // Minimize the window, it should be hidden.
@@ -530,7 +523,7 @@ TEST_P(DockedWindowResizerTest, AttachMaximize) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   wm::WindowState* window_state = wm::GetWindowState(window.get());
   // Maximize the window, it should get undocked and maximized in a desktop.
@@ -538,7 +531,7 @@ TEST_P(DockedWindowResizerTest, AttachMaximize) {
   RunAllPendingInMessageLoop();
   EXPECT_TRUE(window->IsVisible());
   EXPECT_TRUE(window_state->IsMaximized());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Dock two windows, undock one, check that the other one is still docked.
@@ -559,11 +552,11 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindows) {
   // Both windows should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // Detach by dragging left (should get undocked).
   const int left_edge = w2->bounds().x();
@@ -577,12 +570,11 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindows) {
   EXPECT_FALSE(window_state1->IsMinimized());
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   // The window should be floating on the desktop again and moved to the left.
   EXPECT_EQ(left_edge - 32, w2->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
 }
 
 // Create two windows, dock one and change shelf to auto-hide.
@@ -596,12 +588,12 @@ TEST_P(DockedWindowResizerTest, AttachOneAutoHideShelf) {
   // w1 should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   scoped_ptr<aura::Window> w2(CreateTestWindowInShellWithDelegateAndType(
       NULL, ui::wm::WINDOW_TYPE_NORMAL, 0, gfx::Rect(20, 20, 150, 20)));
   wm::GetWindowState(w2.get())->Maximize();
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   EXPECT_TRUE(wm::GetWindowState(w2.get())->IsMaximized());
 
   gfx::Rect work_area =
@@ -641,14 +633,14 @@ TEST_P(DockedWindowResizerTest, AttachOnTwoSides) {
   // The first window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   // The second window should be near the left edge but not snapped.
   // Normal window will get side-maximized while panels will not.
   int expected_x = test_panels() ?
       (initial_bounds.x() - initial_location_in_parent().x()) : 0;
   EXPECT_EQ(expected_x, w2->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
 }
 
 // Tests that reverting a drag restores docked state if a window was docked.
@@ -662,20 +654,19 @@ TEST_P(DockedWindowResizerTest, RevertDragRestoresAttachment) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Drag the window out but revert the drag
   ASSERT_NO_FATAL_FAILURE(DragStart(window.get()));
   DragMove(-50, 0);
   DragRevert();
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Detach window.
   ASSERT_NO_FATAL_FAILURE(DragStart(window.get()));
   DragMove(-50, 0);
   DragEnd();
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 // Tests that reverting drag restores undocked state if a window was not docked.
@@ -739,7 +730,7 @@ TEST_P(DockedWindowResizerTest, DragAcrossDisplays) {
   // The window should be docked at the right edge.
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
 
   // Try dragging to the right - enough to get it peeking at the other screen
   // but not enough to land in the other screen.
@@ -750,8 +741,7 @@ TEST_P(DockedWindowResizerTest, DragAcrossDisplays) {
   DragEnd();
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
   EXPECT_EQ(root_windows[0], window->GetRootWindow());
 
   // Undock and move to the right - enough to get the mouse pointer past the
@@ -766,8 +756,7 @@ TEST_P(DockedWindowResizerTest, DragAcrossDisplays) {
   DragEnd();
   EXPECT_NE(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
 
   // Keep dragging it to the right until its left edge touches the screen edge.
@@ -783,7 +772,7 @@ TEST_P(DockedWindowResizerTest, DragAcrossDisplays) {
   DragEnd();
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().x(),
             window->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
 }
 
@@ -804,7 +793,7 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindowsDetachOne) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -814,7 +803,7 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindowsDetachOne) {
   // Both windows should now be docked at the right edge.
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // Dock width should be set to a wider window.
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(std::max(w1->bounds().width(), w2->bounds().width()),
@@ -833,12 +822,12 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindowsDetachOne) {
   // The first window should be still docked.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   // The second window should be still docked.
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
 
   // Detach by dragging left more (should get undocked).
   const int left_edge = w2->bounds().x();
@@ -854,9 +843,9 @@ TEST_P(DockedWindowResizerTest, AttachTwoWindowsDetachOne) {
 
   // The second window should be floating on the desktop again.
   EXPECT_EQ(left_edge + drag_x, w2->bounds().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   // Dock width should be set to remaining single docked window.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
 }
@@ -876,7 +865,7 @@ TEST_P(DockedWindowResizerTest, AttachWindowMaximizeOther) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -892,15 +881,15 @@ TEST_P(DockedWindowResizerTest, AttachWindowMaximizeOther) {
   // The first window should be still docked.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
 
   // The second window should be floating on the desktop.
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().right() -
             (w2->bounds().width()/2 + 20),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   // Dock width should be set to remaining single docked window.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
   // Desktop work area should now shrink.
@@ -926,8 +915,8 @@ TEST_P(DockedWindowResizerTest, AttachWindowMaximizeOther) {
   DragEnd();
   EXPECT_EQ(DOCKED_ALIGNMENT_NONE, docked_alignment(manager));
   // Dock should get shrunk and desktop should get expanded.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_NONE, docked_alignment(manager));
   EXPECT_EQ(0, docked_width(manager));
   // The second window should now get resized and take up the whole screen.
@@ -944,11 +933,11 @@ TEST_P(DockedWindowResizerTest, AttachWindowMaximizeOther) {
   // Release the mouse and the window should be now attached to the edge.
   DragEnd();
   // Dock should get expanded and desktop should get shrunk.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
   // Second window should still be in the desktop.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   // Maximized window should be shrunk.
   EXPECT_EQ(ScreenUtil::GetDisplayBoundsInParent(w2.get()).width() -
             docked_width(manager) - min_dock_gap(),
@@ -975,14 +964,14 @@ TEST_P(DockedWindowResizerTest, AttachOneTestSticky) {
   // A window should be docked at the left edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().x(),
             w1->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   // The first window should be docked.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().x(),
             w1->GetBoundsInScreen().x());
   // Dock width should be set to that of a single docked window.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
 
@@ -996,9 +985,9 @@ TEST_P(DockedWindowResizerTest, AttachOneTestSticky) {
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().x() +
                 (w1->bounds().right() + 20),
             w2->GetBoundsInScreen().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   // Dock width should be set to that of a single docked window.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
 
@@ -1013,8 +1002,8 @@ TEST_P(DockedWindowResizerTest, AttachOneTestSticky) {
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
   // The second window should still be in the desktop.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
 
   // Drag w2 by a bit more - it should resist the drag (stuck edges)
   int start_x = w2->bounds().x();
@@ -1032,8 +1021,8 @@ TEST_P(DockedWindowResizerTest, AttachOneTestSticky) {
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
   // The second window should still be in the desktop
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
 
   // Drag w2 by more than the stuck threshold and drop it into the dock.
   ASSERT_NO_FATAL_FAILURE(DragStart(w2.get()));
@@ -1045,8 +1034,8 @@ TEST_P(DockedWindowResizerTest, AttachOneTestSticky) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // Both windows are docked now.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // Dock should get expanded and desktop should get shrunk.
   EXPECT_EQ(DOCKED_ALIGNMENT_LEFT, docked_alignment(manager));
   EXPECT_EQ(std::max(w1->bounds().width(), w2->bounds().width()),
@@ -1075,7 +1064,7 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -1085,7 +1074,7 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   // Both windows should now be docked at the right edge.
   EXPECT_EQ(w2->GetRootWindow()->GetBoundsInScreen().right(),
             w2->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // Dock width should be set to a wider window.
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(std::max(w1->bounds().width(), w2->bounds().width()),
@@ -1103,8 +1092,8 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // Dock should still have both windows in it.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // w1 is now wider than before. The dock should expand and be as wide as w1.
   EXPECT_EQ(previous_width + kResizeSpan1, w1->bounds().width());
@@ -1129,8 +1118,8 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // Dock should still have both windows in it.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // w1 is now as wide as the maximum dock width and the dock should get
   // resized to the maximum width.
@@ -1155,8 +1144,8 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   // Release the mouse and the window should be docked.
   DragEnd();
   // Dock should still have both windows in it.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // w1 should be narrower than before by the length of the drag.
   EXPECT_EQ(previous_width - kResizeSpan3, w1->bounds().width());
@@ -1177,7 +1166,7 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   DragMove(-kResizeSpan3, 0);
   DragEnd();
   EXPECT_EQ(previous_width + kResizeSpan3, w1->bounds().width());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   // Docked area should be as wide as possible (maximum) and same as w1.
   EXPECT_EQ(max_width(), docked_width(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
@@ -1190,13 +1179,13 @@ TEST_P(DockedWindowResizerTest, ResizeOneOfTwoWindows) {
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // Release the mouse and the window should be no longer attached to the edge.
   DragEnd();
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w1->parent()->id());
   // Dock should be as wide as w2 (and same as ideal width).
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(ideal_width(), docked_width(manager));
   EXPECT_EQ(w2->bounds().width(), docked_width(manager));
   // The second window should be still docked.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // Desktop work area should be inset.
   EXPECT_EQ(ScreenUtil::GetDisplayBoundsInParent(w1.get()).width() -
             docked_width(manager) - min_dock_gap(),
@@ -1216,7 +1205,7 @@ TEST_P(DockedWindowResizerTest, ResizingKeepsWidth) {
   // Window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -1235,7 +1224,7 @@ TEST_P(DockedWindowResizerTest, ResizingKeepsWidth) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // The window should get docked.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // w1 is now wider and the dock should expand to be as wide as w1.
   EXPECT_EQ(previous_width + kResizeSpan1, w1->bounds().width());
@@ -1274,7 +1263,7 @@ TEST_P(DockedWindowResizerTest, ResizingKeepsDockedState) {
   // Window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -1293,7 +1282,7 @@ TEST_P(DockedWindowResizerTest, ResizingKeepsDockedState) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // The window should stay docked.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // w1 is now wider and the dock should expand to be as wide as w1.
   EXPECT_EQ(previous_width + kResizeSpan1, w1->bounds().width());
@@ -1312,7 +1301,7 @@ TEST_P(DockedWindowResizerTest, ResizingKeepsDockedState) {
   // Release the mouse and the window should be attached to the edge.
   DragEnd();
   // The window should stay docked.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   // The dock should stay as wide as w1 is now (a bit less than before).
   EXPECT_EQ(previous_width - kResizeSpan2, w1->bounds().width());
@@ -1332,8 +1321,8 @@ TEST_P(DockedWindowResizerTest, ResizeTwoWindows) {
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w1.get(), 20);
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w2.get(), 100);
   // Both windows should now be docked at the right edge.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // Dock width should be set to ideal width.
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
@@ -1369,9 +1358,9 @@ TEST_P(DockedWindowResizerTest, ResizeTwoWindows) {
 
   // Undock w2 and then dock it back.
   DragToVerticalPositionRelativeToEdge(DOCKED_EDGE_RIGHT, w2.get(), -400, 100);
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w2->parent()->id());
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w2.get(), 100);
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w2->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w2->parent()->id());
   // w2 should become same width as w1.
   EXPECT_EQ(w1->bounds().width(), w2->bounds().width());
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
@@ -1403,7 +1392,7 @@ TEST_P(DockedWindowResizerTest, DragToShelf) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -1453,8 +1442,8 @@ TEST_P(DockedWindowResizerTest, DragWindowWithTransientChild) {
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, window.get(), 20);
 
   // A window should be docked at the right edge.
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, child->parent()->id());
 
   // Drag the child - it should move freely and stay where it is dragged.
   ASSERT_NO_FATAL_FAILURE(DragStart(child.get()));
@@ -1469,8 +1458,8 @@ TEST_P(DockedWindowResizerTest, DragWindowWithTransientChild) {
   DragEnd();
 
   // The window should be undocked and the transient child should be reparented.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, child->parent()->id());
   // The child should not have moved.
   EXPECT_EQ(gfx::Point(20 + 500, 20 + 20).ToString(),
             child->GetBoundsInScreen().origin().ToString());
@@ -1497,8 +1486,7 @@ TEST_P(DockedWindowResizerTest, DragWindowWithModalTransientChild) {
   scoped_ptr<aura::Window> child(CreateModalWindow(gfx::Rect(20, 20, 150, 20)));
   ::wm::AddTransientChild(window.get(), child.get());
   EXPECT_EQ(window.get(), ::wm::GetTransientParent(child.get()));
-  EXPECT_EQ(internal::kShellWindowId_SystemModalContainer,
-            child->parent()->id());
+  EXPECT_EQ(kShellWindowId_SystemModalContainer, child->parent()->id());
 
   // End the drag, the |window| should have moved (if it is a panel it will
   // no longer be attached to the shelf since we dragged it above).
@@ -1508,10 +1496,9 @@ TEST_P(DockedWindowResizerTest, DragWindowWithModalTransientChild) {
 
   // The original |window| should be in the default container (not docked or
   // attached).
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
   // The transient |child| should still be in system modal container.
-  EXPECT_EQ(internal::kShellWindowId_SystemModalContainer,
-            child->parent()->id());
+  EXPECT_EQ(kShellWindowId_SystemModalContainer, child->parent()->id());
   // The |child| should not have moved.
   EXPECT_EQ(gfx::Point(20, 20).ToString(),
             child->GetBoundsInScreen().origin().ToString());
@@ -1530,7 +1517,7 @@ TEST_P(DockedWindowResizerTest, SideSnapDocked) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
@@ -1546,7 +1533,7 @@ TEST_P(DockedWindowResizerTest, SideSnapDocked) {
   EXPECT_EQ(0, docked_width(manager));
   EXPECT_EQ(work_area.height(), w1->bounds().height());
   EXPECT_EQ(work_area.right(), w1->bounds().right());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w1->parent()->id());
   EXPECT_FALSE(window_state->IsDocked());
   EXPECT_TRUE(window_state->IsSnapped());
 
@@ -1555,7 +1542,7 @@ TEST_P(DockedWindowResizerTest, SideSnapDocked) {
   // A window should be docked at the right edge.
   EXPECT_EQ(w1->GetRootWindow()->GetBoundsInScreen().right(),
             w1->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, w1->parent()->id());
   EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
   EXPECT_EQ(w1->bounds().width(), docked_width(manager));
   EXPECT_TRUE(window_state->IsDocked());
@@ -1570,7 +1557,7 @@ TEST_P(DockedWindowResizerTest, SideSnapDocked) {
   EXPECT_EQ(0, docked_width(manager));
   EXPECT_EQ(work_area.height(), w1->bounds().height());
   EXPECT_EQ(work_area.x(), w1->bounds().x());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, w1->parent()->id());
   EXPECT_FALSE(window_state->IsDocked());
   EXPECT_TRUE(window_state->IsSnapped());
 }
@@ -1589,7 +1576,7 @@ TEST_P(DockedWindowResizerTest, MaximizedDuringDrag) {
   DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, window.get(), 20);
   EXPECT_EQ(window->GetRootWindow()->GetBoundsInScreen().right(),
             window->GetBoundsInScreen().right());
-  EXPECT_EQ(internal::kShellWindowId_DockedContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DockedContainer, window->parent()->id());
   DockedWindowLayoutManager* manager =
       static_cast<DockedWindowLayoutManager*>(
           window->parent()->layout_manager());
@@ -1609,7 +1596,7 @@ TEST_P(DockedWindowResizerTest, MaximizedDuringDrag) {
   generator.ReleaseLeftButton();
 
   // |window| should get undocked.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
   EXPECT_EQ(0, docked_width(manager));
   EXPECT_EQ(
       ScreenUtil::GetMaximizedWindowBoundsInParent(window.get()).ToString(),
@@ -1622,5 +1609,5 @@ INSTANTIATE_TEST_CASE_P(NormalOrPanel,
                         DockedWindowResizerTest,
                         testing::Values(ui::wm::WINDOW_TYPE_NORMAL,
                                         ui::wm::WINDOW_TYPE_PANEL));
-}  // namespace internal
+
 }  // namespace ash
diff --git a/ash/wm/drag_window_controller.cc b/ash/wm/drag_window_controller.cc
index 516d59f..eee66e4 100644
--- a/ash/wm/drag_window_controller.cc
+++ b/ash/wm/drag_window_controller.cc
@@ -18,7 +18,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
 
 DragWindowController::DragWindowController(aura::Window* window)
     : window_(window),
@@ -119,5 +118,4 @@ void DragWindowController::RecreateWindowLayers() {
   layer_owner_->root()->parent()->Remove(layer_owner_->root());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/drag_window_controller.h b/ash/wm/drag_window_controller.h
index 50020a1d..c5d8b4b 100644
--- a/ash/wm/drag_window_controller.h
+++ b/ash/wm/drag_window_controller.h
@@ -26,7 +26,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // DragWindowController is responsible for showing a semi-transparent window
 // while dragging a window across displays.
@@ -91,7 +90,6 @@ class ASH_EXPORT DragWindowController {
   DISALLOW_COPY_AND_ASSIGN(DragWindowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_DRAG_WINDOW_CONTROLLER_H_
diff --git a/ash/wm/drag_window_resizer.cc b/ash/wm/drag_window_resizer.cc
index 2b91f85..15b0584 100644
--- a/ash/wm/drag_window_resizer.cc
+++ b/ash/wm/drag_window_resizer.cc
@@ -23,8 +23,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // The maximum opacity of the drag phantom window.
@@ -211,5 +209,4 @@ bool DragWindowResizer::ShouldAllowMouseWarp() {
        GetTarget()->type() == ui::wm::WINDOW_TYPE_PANEL);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/drag_window_resizer.h b/ash/wm/drag_window_resizer.h
index 67f4702..a837b81 100644
--- a/ash/wm/drag_window_resizer.h
+++ b/ash/wm/drag_window_resizer.h
@@ -12,7 +12,6 @@
 #include "ui/gfx/point.h"
 
 namespace ash {
-namespace internal {
 
 class DragWindowController;
 
@@ -64,7 +63,6 @@ class ASH_EXPORT DragWindowResizer : public WindowResizer {
   DISALLOW_COPY_AND_ASSIGN(DragWindowResizer);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_DRAG_WINDOW_RESIZER_H_
diff --git a/ash/wm/drag_window_resizer_unittest.cc b/ash/wm/drag_window_resizer_unittest.cc
index 3ea9c3c..dbb4da0 100644
--- a/ash/wm/drag_window_resizer_unittest.cc
+++ b/ash/wm/drag_window_resizer_unittest.cc
@@ -27,7 +27,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kRootHeight = 600;
@@ -107,7 +106,7 @@ class DragWindowResizerTest : public test::AshTestBase {
     return location;
   }
 
-  internal::ShelfLayoutManager* shelf_layout_manager() {
+  ShelfLayoutManager* shelf_layout_manager() {
     return Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
   }
 
@@ -356,7 +355,7 @@ TEST_F(DragWindowResizerTest, DragWindowController) {
     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
         window_.get(), gfx::Point(), HTCAPTION));
     ASSERT_TRUE(resizer.get());
-    internal::DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
+    DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
     ASSERT_TRUE(drag_resizer);
     EXPECT_FALSE(drag_resizer->drag_window_controller_.get());
 
@@ -408,7 +407,7 @@ TEST_F(DragWindowResizerTest, DragWindowController) {
     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
         window_.get(), gfx::Point(), HTCAPTION));
     ASSERT_TRUE(resizer.get());
-    internal::DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
+    DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
     ASSERT_TRUE(drag_resizer);
     EXPECT_FALSE(drag_resizer->drag_window_controller_.get());
 
@@ -509,8 +508,8 @@ TEST_F(DragWindowResizerTest, CursorDeviceScaleFactor) {
   {
     // Make sure the window is on the default container first.
     aura::Window* default_container =
-        GetRootWindowController(root_windows[1])->GetContainer(
-            internal::kShellWindowId_DefaultContainer);
+        GetRootWindowController(root_windows[1])
+            ->GetContainer(kShellWindowId_DefaultContainer);
     default_container->AddChild(window_.get());
     window_->SetBoundsInScreen(
         gfx::Rect(600, 0, 50, 60),
@@ -633,5 +632,4 @@ TEST_F(DragWindowResizerTest, MoveWindowAcrossDisplays) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/event_client_impl.cc b/ash/wm/event_client_impl.cc
index fbf5f86..b54e622 100644
--- a/ash/wm/event_client_impl.cc
+++ b/ash/wm/event_client_impl.cc
@@ -11,7 +11,6 @@
 #include "ui/keyboard/keyboard_util.h"
 
 namespace ash {
-namespace internal {
 
 EventClientImpl::EventClientImpl() {
 }
@@ -56,5 +55,4 @@ ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
   return Shell::GetInstance();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/event_client_impl.h b/ash/wm/event_client_impl.h
index b38228b..da243f9 100644
--- a/ash/wm/event_client_impl.h
+++ b/ash/wm/event_client_impl.h
@@ -11,7 +11,6 @@
 #include "ui/aura/client/event_client.h"
 
 namespace ash {
-namespace internal {
 
 class EventClientImpl : public aura::client::EventClient {
  public:
@@ -27,7 +26,6 @@ class EventClientImpl : public aura::client::EventClient {
   DISALLOW_COPY_AND_ASSIGN(EventClientImpl);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_EVENT_CLIENT_IMPL_H_
diff --git a/ash/wm/gestures/long_press_affordance_handler.cc b/ash/wm/gestures/long_press_affordance_handler.cc
index 54e819777..961b864 100644
--- a/ash/wm/gestures/long_press_affordance_handler.cc
+++ b/ash/wm/gestures/long_press_affordance_handler.cc
@@ -25,7 +25,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kAffordanceOuterRadius = 60;
@@ -365,5 +364,4 @@ void LongPressAffordanceHandler::OnWindowDestroying(aura::Window* window) {
   StopAffordance();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/gestures/long_press_affordance_handler.h b/ash/wm/gestures/long_press_affordance_handler.h
index fa0337a..3826588 100644
--- a/ash/wm/gestures/long_press_affordance_handler.h
+++ b/ash/wm/gestures/long_press_affordance_handler.h
@@ -20,8 +20,6 @@ namespace test {
 class SystemGestureEventFilterTest;
 }
 
-namespace internal {
-
 // LongPressAffordanceHandler displays an animated affordance that is shown
 // on a TAP_DOWN gesture. The animation sequence consists of two parts:
 // The first part is a grow animation that starts at semi-long-press and
@@ -69,7 +67,6 @@ class LongPressAffordanceHandler : public gfx::LinearAnimation,
   DISALLOW_COPY_AND_ASSIGN(LongPressAffordanceHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_
diff --git a/ash/wm/gestures/overview_gesture_handler.cc b/ash/wm/gestures/overview_gesture_handler.cc
index ebff8e6..381941d 100644
--- a/ash/wm/gestures/overview_gesture_handler.cc
+++ b/ash/wm/gestures/overview_gesture_handler.cc
@@ -15,8 +15,6 @@
 #include "ui/gfx/screen.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // The number of pixels from the top of the screen (a virtual bezel) to allow
@@ -106,5 +104,4 @@ bool OverviewGestureHandler::ProcessGestureEvent(
   return true;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/gestures/overview_gesture_handler.h b/ash/wm/gestures/overview_gesture_handler.h
index 8b9fde5..76f5fb8 100644
--- a/ash/wm/gestures/overview_gesture_handler.h
+++ b/ash/wm/gestures/overview_gesture_handler.h
@@ -17,7 +17,6 @@ class ScrollEvent;
 }
 
 namespace ash {
-namespace internal {
 
 // This handles a 3-finger swipe down gesture from the top of the screen to
 // enter overview mode.
@@ -45,7 +44,6 @@ class OverviewGestureHandler {
   DISALLOW_COPY_AND_ASSIGN(OverviewGestureHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_OVERVIEW_GESTURE_HANDLER_H_
diff --git a/ash/wm/gestures/overview_gesture_handler_unittest.cc b/ash/wm/gestures/overview_gesture_handler_unittest.cc
index 8406586..01eb012 100644
--- a/ash/wm/gestures/overview_gesture_handler_unittest.cc
+++ b/ash/wm/gestures/overview_gesture_handler_unittest.cc
@@ -13,7 +13,6 @@
 #include "ui/aura/window_event_dispatcher.h"
 
 namespace ash {
-namespace internal {
 
 class OverviewGestureHandlerTest : public test::AshTestBase {
  public:
@@ -170,5 +169,4 @@ TEST_F(OverviewGestureHandlerTest, GestureSwipeTopOfWindow) {
   EXPECT_FALSE(IsSelecting());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/gestures/shelf_gesture_handler.cc b/ash/wm/gestures/shelf_gesture_handler.cc
index 5e89737..42b12c5 100644
--- a/ash/wm/gestures/shelf_gesture_handler.cc
+++ b/ash/wm/gestures/shelf_gesture_handler.cc
@@ -21,7 +21,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 ShelfGestureHandler::ShelfGestureHandler()
     : drag_in_progress_(false) {
@@ -93,5 +92,4 @@ bool ShelfGestureHandler::ProcessGestureEvent(const ui::GestureEvent& event) {
   return false;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/gestures/shelf_gesture_handler.h b/ash/wm/gestures/shelf_gesture_handler.h
index 90dfd7c..974bf2b 100644
--- a/ash/wm/gestures/shelf_gesture_handler.h
+++ b/ash/wm/gestures/shelf_gesture_handler.h
@@ -13,8 +13,6 @@ class GestureEvent;
 }
 
 namespace ash {
-namespace internal {
-
 class TrayGestureHandler;
 
 // This manages gestures on the shelf (e.g. launcher, status tray) that affects
@@ -37,7 +35,6 @@ class ShelfGestureHandler {
   DISALLOW_COPY_AND_ASSIGN(ShelfGestureHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_SHELF_GESTURE_HANDLER_H_
diff --git a/ash/wm/gestures/tray_gesture_handler.cc b/ash/wm/gestures/tray_gesture_handler.cc
index 0d2e8cf..ac72929 100644
--- a/ash/wm/gestures/tray_gesture_handler.cc
+++ b/ash/wm/gestures/tray_gesture_handler.cc
@@ -16,7 +16,6 @@
 const int kMinBubbleHeight = 13;
 
 namespace ash {
-namespace internal {
 
 TrayGestureHandler::TrayGestureHandler()
     : widget_(NULL),
@@ -105,5 +104,4 @@ void TrayGestureHandler::OnWidgetDestroying(views::Widget* widget) {
   widget_ = NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/gestures/tray_gesture_handler.h b/ash/wm/gestures/tray_gesture_handler.h
index 34f033b..424fc57 100644
--- a/ash/wm/gestures/tray_gesture_handler.h
+++ b/ash/wm/gestures/tray_gesture_handler.h
@@ -14,7 +14,6 @@ class GestureEvent;
 }
 
 namespace ash {
-namespace internal {
 
 // Handles gesture events on the shelf to show the system tray bubble.
 class TrayGestureHandler : public views::WidgetObserver {
@@ -42,7 +41,6 @@ class TrayGestureHandler : public views::WidgetObserver {
   DISALLOW_COPY_AND_ASSIGN(TrayGestureHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_TRAY_GESTURE_HANDLER_H_
diff --git a/ash/wm/immersive_fullscreen_controller_unittest.cc b/ash/wm/immersive_fullscreen_controller_unittest.cc
index 4693ef5..214ee92 100644
--- a/ash/wm/immersive_fullscreen_controller_unittest.cc
+++ b/ash/wm/immersive_fullscreen_controller_unittest.cc
@@ -1018,7 +1018,7 @@ TEST_F(ImmersiveFullscreenControllerTest, Bubbles) {
 // immersive fullscreen and that the shelf's state before entering immersive
 // fullscreen is restored upon exiting immersive fullscreen.
 TEST_F(ImmersiveFullscreenControllerTest, Shelf) {
-  ash::internal::ShelfLayoutManager* shelf =
+  ash::ShelfLayoutManager* shelf =
       ash::Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
 
   // Shelf is visible by default.
diff --git a/ash/wm/lock_state_controller.cc b/ash/wm/lock_state_controller.cc
index 31031c1..09a46af 100644
--- a/ash/wm/lock_state_controller.cc
+++ b/ash/wm/lock_state_controller.cc
@@ -43,7 +43,7 @@ const int kMaxShutdownSoundDurationMs = 1500;
 aura::Window* GetBackground() {
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
   return Shell::GetContainer(root_window,
-      internal::kShellWindowId_DesktopBackgroundContainer);
+                             kShellWindowId_DesktopBackgroundContainer);
 }
 
 bool IsBackgroundHidden() {
@@ -163,7 +163,7 @@ LockStateController::TestApi::~TestApi() {
 }
 
 LockStateController::LockStateController()
-    : animator_(new internal::SessionStateAnimator()),
+    : animator_(new SessionStateAnimator()),
       login_status_(user::LOGGED_IN_NONE),
       system_is_locked_(false),
       shutting_down_(false),
@@ -253,8 +253,8 @@ void LockStateController::CancelShutdownAnimation() {
   }
 
   animator_->StartGlobalAnimation(
-      internal::SessionStateAnimator::ANIMATION_UNDO_GRAYSCALE_BRIGHTNESS,
-      internal::SessionStateAnimator::ANIMATION_SPEED_REVERT_SHUTDOWN);
+      SessionStateAnimator::ANIMATION_UNDO_GRAYSCALE_BRIGHTNESS,
+      SessionStateAnimator::ANIMATION_SPEED_REVERT_SHUTDOWN);
   pre_shutdown_timer_.Stop();
 }
 
@@ -277,8 +277,8 @@ void LockStateController::RequestShutdown() {
   shell->cursor_manager()->LockCursor();
 
   animator_->StartGlobalAnimation(
-      internal::SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
-      internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
+      SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
+      SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
   StartRealShutdownTimer(true);
 }
 
@@ -313,10 +313,9 @@ void LockStateController::OnAppTerminating() {
     Shell* shell = ash::Shell::GetInstance();
     shell->cursor_manager()->HideCursor();
     shell->cursor_manager()->LockCursor();
-    animator_->StartAnimation(
-        internal::SessionStateAnimator::kAllContainersMask,
-        internal::SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
-        internal::SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
+    animator_->StartAnimation(SessionStateAnimator::kAllContainersMask,
+                              SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
+                              SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
   }
 }
 
@@ -359,8 +358,7 @@ void LockStateController::StartPreShutdownAnimationTimer() {
   pre_shutdown_timer_.Stop();
   pre_shutdown_timer_.Start(
       FROM_HERE,
-      animator_->
-          GetDuration(internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN),
+      animator_->GetDuration(SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN),
       this,
       &LockStateController::OnPreShutdownAnimationTimeout);
 }
@@ -379,8 +377,8 @@ void LockStateController::StartRealShutdownTimer(bool with_animation_time) {
   base::TimeDelta duration =
       base::TimeDelta::FromMilliseconds(kShutdownRequestDelayMs);
   if (with_animation_time) {
-    duration += animator_->GetDuration(
-        internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
+    duration +=
+        animator_->GetDuration(SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
   }
 
 #if defined(OS_CHROMEOS)
@@ -420,8 +418,8 @@ void LockStateController::StartCancellableShutdownAnimation() {
   shell->cursor_manager()->HideCursor();
 
   animator_->StartGlobalAnimation(
-      internal::SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
-      internal::SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
+      SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
+      SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
   StartPreShutdownAnimationTimer();
 }
 
@@ -441,23 +439,21 @@ void LockStateController::StartImmediatePreLockAnimation(
   observer->Pause();
 
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_LIFT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_LIFT,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       observer);
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::LAUNCHER,
-      internal::SessionStateAnimator::ANIMATION_FADE_OUT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::LAUNCHER,
+      SessionStateAnimator::ANIMATION_FADE_OUT,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       observer);
   // Hide the screen locker containers so we can raise them later.
-  animator_->StartAnimation(
-      internal::SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
-      internal::SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
+  animator_->StartAnimation(SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
+                            SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
+                            SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
   AnimateBackgroundAppearanceIfNecessary(
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
-      observer);
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS, observer);
 
   observer->Unpause();
 
@@ -480,23 +476,21 @@ void LockStateController::StartCancellablePreLockAnimation() {
   observer->Pause();
 
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_LIFT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDOABLE,
+      SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_LIFT,
+      SessionStateAnimator::ANIMATION_SPEED_UNDOABLE,
       observer);
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::LAUNCHER,
-      internal::SessionStateAnimator::ANIMATION_FADE_OUT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDOABLE,
+      SessionStateAnimator::LAUNCHER,
+      SessionStateAnimator::ANIMATION_FADE_OUT,
+      SessionStateAnimator::ANIMATION_SPEED_UNDOABLE,
       observer);
   // Hide the screen locker containers so we can raise them later.
-  animator_->StartAnimation(
-      internal::SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
-      internal::SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
+  animator_->StartAnimation(SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
+                            SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
+                            SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
   AnimateBackgroundAppearanceIfNecessary(
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDOABLE,
-      observer);
+      SessionStateAnimator::ANIMATION_SPEED_UNDOABLE, observer);
 
   DispatchCancelMode();
   FOR_EACH_OBSERVER(LockStateObserver, observers_,
@@ -515,18 +509,17 @@ void LockStateController::CancelPreLockAnimation() {
   observer->Pause();
 
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_UNDO_LIFT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS,
+      SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_UNDO_LIFT,
+      SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS,
       observer);
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::LAUNCHER,
-      internal::SessionStateAnimator::ANIMATION_FADE_IN,
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS,
+      SessionStateAnimator::LAUNCHER,
+      SessionStateAnimator::ANIMATION_FADE_IN,
+      SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS,
       observer);
   AnimateBackgroundHidingIfNecessary(
-      internal::SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS,
-      observer);
+      SessionStateAnimator::ANIMATION_SPEED_UNDO_MOVE_WINDOWS, observer);
 
   observer->Unpause();
 }
@@ -542,9 +535,9 @@ void LockStateController::StartPostLockAnimation() {
 
   observer->Pause();
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_RAISE_TO_SCREEN,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_RAISE_TO_SCREEN,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       observer);
   observer->Unpause();
 }
@@ -553,9 +546,9 @@ void LockStateController::StartUnlockAnimationBeforeUIDestroyed(
     base::Closure& callback) {
   VLOG(1) << "StartUnlockAnimationBeforeUIDestroyed";
   animator_->StartAnimationWithCallback(
-      internal::SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_LIFT,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_LIFT,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       callback);
 }
 
@@ -571,18 +564,17 @@ void LockStateController::StartUnlockAnimationAfterUIDestroyed() {
   observer->Pause();
 
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
-      internal::SessionStateAnimator::ANIMATION_DROP,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS,
+      SessionStateAnimator::ANIMATION_DROP,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       observer);
   animator_->StartAnimationWithObserver(
-      internal::SessionStateAnimator::LAUNCHER,
-      internal::SessionStateAnimator::ANIMATION_FADE_IN,
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
+      SessionStateAnimator::LAUNCHER,
+      SessionStateAnimator::ANIMATION_FADE_IN,
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
       observer);
   AnimateBackgroundHidingIfNecessary(
-      internal::SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS,
-      observer);
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS, observer);
   observer->Unpause();
 }
 
@@ -649,10 +641,9 @@ void LockStateController::StoreUnlockedProperties() {
   }
   if (unlocked_properties_->background_is_hidden) {
     // Hide background so that it can be animated later.
-    animator_->StartAnimation(
-        internal::SessionStateAnimator::DESKTOP_BACKGROUND,
-        internal::SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
-        internal::SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
+    animator_->StartAnimation(SessionStateAnimator::DESKTOP_BACKGROUND,
+                              SessionStateAnimator::ANIMATION_HIDE_IMMEDIATELY,
+                              SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
     ShowBackground();
   }
 }
@@ -663,35 +654,34 @@ void LockStateController::RestoreUnlockedProperties() {
   if (unlocked_properties_->background_is_hidden) {
     HideBackground();
     // Restore background visibility.
-    animator_->StartAnimation(
-        internal::SessionStateAnimator::DESKTOP_BACKGROUND,
-        internal::SessionStateAnimator::ANIMATION_FADE_IN,
-        internal::SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
+    animator_->StartAnimation(SessionStateAnimator::DESKTOP_BACKGROUND,
+                              SessionStateAnimator::ANIMATION_FADE_IN,
+                              SessionStateAnimator::ANIMATION_SPEED_IMMEDIATE);
   }
   unlocked_properties_.reset();
 }
 
 void LockStateController::AnimateBackgroundAppearanceIfNecessary(
-    internal::SessionStateAnimator::AnimationSpeed speed,
+    SessionStateAnimator::AnimationSpeed speed,
     ui::LayerAnimationObserver* observer) {
   if (unlocked_properties_.get() &&
       unlocked_properties_->background_is_hidden) {
     animator_->StartAnimationWithObserver(
-        internal::SessionStateAnimator::DESKTOP_BACKGROUND,
-        internal::SessionStateAnimator::ANIMATION_FADE_IN,
+        SessionStateAnimator::DESKTOP_BACKGROUND,
+        SessionStateAnimator::ANIMATION_FADE_IN,
         speed,
         observer);
   }
 }
 
 void LockStateController::AnimateBackgroundHidingIfNecessary(
-    internal::SessionStateAnimator::AnimationSpeed speed,
+    SessionStateAnimator::AnimationSpeed speed,
     ui::LayerAnimationObserver* observer) {
   if (unlocked_properties_.get() &&
       unlocked_properties_->background_is_hidden) {
     animator_->StartAnimationWithObserver(
-        internal::SessionStateAnimator::DESKTOP_BACKGROUND,
-        internal::SessionStateAnimator::ANIMATION_FADE_OUT,
+        SessionStateAnimator::DESKTOP_BACKGROUND,
+        SessionStateAnimator::ANIMATION_FADE_OUT,
         speed,
         observer);
   }
diff --git a/ash/wm/lock_state_controller.h b/ash/wm/lock_state_controller.h
index 7109e73..b6d134f 100644
--- a/ash/wm/lock_state_controller.h
+++ b/ash/wm/lock_state_controller.h
@@ -265,15 +265,15 @@ class ASH_EXPORT LockStateController : public aura::WindowTreeHostObserver,
 
   // Fades in background layer with |speed| if it was hidden in unlocked state.
   void AnimateBackgroundAppearanceIfNecessary(
-      ash::internal::SessionStateAnimator::AnimationSpeed speed,
+      ash::SessionStateAnimator::AnimationSpeed speed,
       ui::LayerAnimationObserver* observer);
 
   // Fades out background layer with |speed| if it was hidden in unlocked state.
   void AnimateBackgroundHidingIfNecessary(
-      ash::internal::SessionStateAnimator::AnimationSpeed speed,
+      ash::SessionStateAnimator::AnimationSpeed speed,
       ui::LayerAnimationObserver* observer);
 
-  scoped_ptr<internal::SessionStateAnimator> animator_;
+  scoped_ptr<SessionStateAnimator> animator_;
 
   scoped_ptr<LockStateControllerDelegate> delegate_;
 
diff --git a/ash/wm/lock_state_controller_unittest.cc b/ash/wm/lock_state_controller_unittest.cc
index b950fe1..8b683b3 100644
--- a/ash/wm/lock_state_controller_unittest.cc
+++ b/ash/wm/lock_state_controller_unittest.cc
@@ -36,11 +36,7 @@
 #endif
 
 namespace ash {
-
-using internal::SessionStateAnimator;
-
 namespace test {
-
 namespace {
 
 bool cursor_visible() {
@@ -58,16 +54,16 @@ aura::Window* GetContainer(int container ) {
 }
 
 bool IsBackgroundHidden() {
-  return !GetContainer(internal::kShellWindowId_DesktopBackgroundContainer)->
-              IsVisible();
+  return !GetContainer(kShellWindowId_DesktopBackgroundContainer)->IsVisible();
 }
 
 void HideBackground() {
   ui::ScopedLayerAnimationSettings settings(
-      GetContainer(internal::kShellWindowId_DesktopBackgroundContainer)->
-          layer()->GetAnimator());
+      GetContainer(kShellWindowId_DesktopBackgroundContainer)
+          ->layer()
+          ->GetAnimator());
   settings.SetTransitionDuration(base::TimeDelta());
-  GetContainer(internal::kShellWindowId_DesktopBackgroundContainer)->Hide();
+  GetContainer(kShellWindowId_DesktopBackgroundContainer)->Hide();
 }
 
 } // namespace
@@ -396,8 +392,8 @@ class LockStateControllerTest : public AshTestBase {
     window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
     window_->Init(aura::WINDOW_LAYER_TEXTURED);
     window_->SetName("WINDOW");
-    aura::Window* container = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
-        internal::kShellWindowId_LockScreenContainer);
+    aura::Window* container = Shell::GetContainer(
+        Shell::GetPrimaryRootWindow(), kShellWindowId_LockScreenContainer);
     ASSERT_TRUE(container);
     container->AddChild(window_.get());
     window_->Show();
@@ -617,8 +613,7 @@ TEST_F(LockStateControllerTest, DISABLED_LockAndCancel) {
   AdvancePartially(SessionStateAnimator::ANIMATION_SPEED_UNDOABLE, 0.5f);
 
   gfx::Transform transform_before_button_released =
-      GetContainer(internal::kShellWindowId_DefaultContainer)->
-          layer()->transform();
+      GetContainer(kShellWindowId_DefaultContainer)->layer()->transform();
 
   // Release the button before the lock timer fires.
   ReleasePowerButton();
@@ -626,8 +621,7 @@ TEST_F(LockStateControllerTest, DISABLED_LockAndCancel) {
   ExpectPreLockAnimationCancel();
 
   gfx::Transform transform_after_button_released =
-      GetContainer(internal::kShellWindowId_DefaultContainer)->
-          layer()->transform();
+      GetContainer(kShellWindowId_DefaultContainer)->layer()->transform();
   // Expect no flickering, animation should proceed from mid-state.
   EXPECT_EQ(transform_before_button_released, transform_after_button_released);
 
diff --git a/ash/wm/maximize_mode/maximize_mode_window_manager.cc b/ash/wm/maximize_mode/maximize_mode_window_manager.cc
index a97030e..eb133f7 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_manager.cc
+++ b/ash/wm/maximize_mode/maximize_mode_window_manager.cc
@@ -16,7 +16,6 @@
 #include "ui/gfx/screen.h"
 
 namespace ash {
-namespace internal {
 
 MaximizeModeWindowManager::~MaximizeModeWindowManager() {
   Shell::GetInstance()->RemoveShellObserver(this);
@@ -170,8 +169,8 @@ void MaximizeModeWindowManager::AddWindowCreationObservers() {
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   for (aura::Window::Windows::const_iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
-    aura::Window* container = Shell::GetContainer(*iter,
-        internal::kShellWindowId_DefaultContainer);
+    aura::Window* container =
+        Shell::GetContainer(*iter, kShellWindowId_DefaultContainer);
     DCHECK(observed_container_windows_.find(container) ==
               observed_container_windows_.end());
     container->AddObserver(this);
@@ -212,13 +211,11 @@ void MaximizeModeWindowManager::EnableBackdropBehindTopWindowOnEachDisplay(
        iter != controllers.end(); ++iter) {
     RootWindowController* controller = *iter;
     aura::Window* container = Shell::GetContainer(
-        controller->root_window(),
-        internal::kShellWindowId_DefaultContainer);
+        controller->root_window(), kShellWindowId_DefaultContainer);
     controller->workspace_controller()->SetMaximizeBackdropDelegate(
         scoped_ptr<WorkspaceLayoutManagerDelegate>(
             enable ? new WorkspaceBackdropDelegate(container) : NULL));
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/maximize_mode/maximize_mode_window_manager.h b/ash/wm/maximize_mode/maximize_mode_window_manager.h
index 0c51cb3..fb1e693 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_manager.h
+++ b/ash/wm/maximize_mode/maximize_mode_window_manager.h
@@ -17,10 +17,8 @@
 #include "ui/gfx/display_observer.h"
 
 namespace ash {
-class Shell;
-
-namespace internal{
 class MaximizeModeWindowState;
+class Shell;
 
 // A window manager which - when created - will force all windows into maximized
 // mode. Exception are panels and windows which cannot be maximized.
@@ -114,7 +112,6 @@ class ASH_EXPORT MaximizeModeWindowManager : public aura::WindowObserver,
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_MANAGER_H_
diff --git a/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc b/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
index 82b07d7..8e93bb1 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
+++ b/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
@@ -45,7 +45,7 @@ class MaximizeModeWindowManagerTest : public test::AshTestBase {
   }
 
   // Create the Maximized mode window manager.
-  ash::internal::MaximizeModeWindowManager* CreateMaximizeModeWindowManager() {
+  ash::MaximizeModeWindowManager* CreateMaximizeModeWindowManager() {
     EXPECT_FALSE(maximize_mode_window_manager());
     Shell::GetInstance()->EnableMaximizeModeWindowManager(true);
     return maximize_mode_window_manager();
@@ -58,7 +58,7 @@ class MaximizeModeWindowManagerTest : public test::AshTestBase {
   }
 
   // Get the maximze window manager.
-  ash::internal::MaximizeModeWindowManager* maximize_mode_window_manager() {
+  ash::MaximizeModeWindowManager* maximize_mode_window_manager() {
     test::ShellTestApi test_api(Shell::GetInstance());
     return test_api.maximize_mode_window_manager();
   }
@@ -98,8 +98,7 @@ class MaximizeModeWindowManagerTest : public test::AshTestBase {
 // Test that creating the object and destroying it without any windows should
 // not cause any problems.
 TEST_F(MaximizeModeWindowManagerTest, SimpleStart) {
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(0, manager->GetNumberOfManagedWindows());
   DestroyMaximizeModeWindowManager();
@@ -132,8 +131,7 @@ TEST_F(MaximizeModeWindowManagerTest, PreCreateWindows) {
 
   // Create the manager and make sure that all qualifying windows were detected
   // and changed.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(3, manager->GetNumberOfManagedWindows());
   EXPECT_TRUE(wm::GetWindowState(w1.get())->IsMaximized());
@@ -172,8 +170,7 @@ TEST_F(MaximizeModeWindowManagerTest, PreCreateWindows) {
 
 // Test that creating windows while a maximizer exists picks them properly up.
 TEST_F(MaximizeModeWindowManagerTest, CreateWindows) {
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(0, manager->GetNumberOfManagedWindows());
 
@@ -230,7 +227,7 @@ TEST_F(MaximizeModeWindowManagerTest, CreateWindows) {
 // Test that windows which got created before the maximizer was created can be
 // destroyed while the maximizer is still running.
 TEST_F(MaximizeModeWindowManagerTest, PreCreateWindowsDeleteWhileActive) {
-  ash::internal::MaximizeModeWindowManager* manager = NULL;
+  ash::MaximizeModeWindowManager* manager = NULL;
   {
     // Bounds for windows we know can be controlled.
     gfx::Rect rect1(10, 10, 200, 50);
@@ -258,8 +255,7 @@ TEST_F(MaximizeModeWindowManagerTest, PreCreateWindowsDeleteWhileActive) {
 // Test that windows which got created while the maximizer was running can get
 // destroyed before the maximizer gets destroyed.
 TEST_F(MaximizeModeWindowManagerTest, CreateWindowsAndDeleteWhileActive) {
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(0, manager->GetNumberOfManagedWindows());
   {
@@ -293,8 +289,7 @@ TEST_F(MaximizeModeWindowManagerTest, MaximizedShouldRemainMaximized) {
   wm::GetWindowState(window.get())->Maximize();
 
   // Create the manager and make sure that the window gets detected.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(1, manager->GetNumberOfManagedWindows());
   EXPECT_TRUE(wm::GetWindowState(window.get())->IsMaximized());
@@ -322,8 +317,7 @@ TEST_F(MaximizeModeWindowManagerTest, MinimizedWindowBehavior) {
   wm::GetWindowState(initially_maximized_window.get())->Maximize();
 
   // Create the manager and make sure that the window gets detected.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(3, manager->GetNumberOfManagedWindows());
   EXPECT_TRUE(wm::GetWindowState(
@@ -368,8 +362,7 @@ TEST_F(MaximizeModeWindowManagerTest, DesktopSizeChangeMovesUnmaximizable) {
       CreateNonMaximizableWindow(ui::wm::WINDOW_TYPE_NORMAL, rect2));
 
   // Turning on the manager will reposition (but not resize) the window.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(2, manager->GetNumberOfManagedWindows());
   gfx::Rect moved_bounds(window1->bounds());
@@ -398,8 +391,7 @@ TEST_F(MaximizeModeWindowManagerTest, SizeChangeReturnWindowToOriginalPos) {
       CreateNonMaximizableWindow(ui::wm::WINDOW_TYPE_NORMAL, rect));
 
   // Turning on the manager will reposition (but not resize) the window.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(1, manager->GetNumberOfManagedWindows());
   gfx::Rect moved_bounds(window->bounds());
@@ -444,8 +436,7 @@ TEST_F(MaximizeModeWindowManagerTest, ModeChangeKeepsMRUOrder) {
   }
 
   // Activating the window manager should keep the order.
-  ash::internal::MaximizeModeWindowManager* manager =
-      CreateMaximizeModeWindowManager();
+  ash::MaximizeModeWindowManager* manager = CreateMaximizeModeWindowManager();
   ASSERT_TRUE(manager);
   EXPECT_EQ(5, manager->GetNumberOfManagedWindows());
   {
diff --git a/ash/wm/maximize_mode/maximize_mode_window_state.cc b/ash/wm/maximize_mode/maximize_mode_window_state.cc
index 9f7c3d0..bfb1322 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_state.cc
+++ b/ash/wm/maximize_mode/maximize_mode_window_state.cc
@@ -23,7 +23,6 @@
 #include "ui/gfx/rect.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 // Returns the biggest possible size for a window which is about to be
@@ -223,5 +222,4 @@ void MaximizeModeWindowState::MaximizeOrCenterWindow(
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/maximize_mode/maximize_mode_window_state.h b/ash/wm/maximize_mode/maximize_mode_window_state.h
index 0129960..5868ea3 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_state.h
+++ b/ash/wm/maximize_mode/maximize_mode_window_state.h
@@ -8,7 +8,6 @@
 #include "ash/wm/window_state.h"
 
 namespace ash {
-namespace internal {
 class MaximizeModeWindowManager;
 
 // The MaximizeModeWindowState implementation which reduces all possible window
@@ -62,7 +61,6 @@ class MaximizeModeWindowState : public wm::WindowState::State {
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowState);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
diff --git a/ash/wm/maximize_mode/workspace_backdrop_delegate.cc b/ash/wm/maximize_mode/workspace_backdrop_delegate.cc
index 455f362..0b7fc01 100644
--- a/ash/wm/maximize_mode/workspace_backdrop_delegate.cc
+++ b/ash/wm/maximize_mode/workspace_backdrop_delegate.cc
@@ -16,9 +16,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-
-namespace internal {
-
 namespace {
 
 // The opacity of the backdrop.
@@ -149,5 +146,4 @@ void WorkspaceBackdropDelegate::Show() {
   background_->GetNativeView()->layer()->SetOpacity(kBackdropOpacity);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/maximize_mode/workspace_backdrop_delegate.h b/ash/wm/maximize_mode/workspace_backdrop_delegate.h
index 02ba3a3..27768ac 100644
--- a/ash/wm/maximize_mode/workspace_backdrop_delegate.h
+++ b/ash/wm/maximize_mode/workspace_backdrop_delegate.h
@@ -22,8 +22,6 @@ class Widget;
 
 namespace ash {
 
-namespace internal {
-
 // A background which gets created for a container |window| and which gets
 // stacked behind the topmost window (within that container) covering the
 // entire container.
@@ -73,8 +71,6 @@ class WorkspaceBackdropDelegate : public aura::WindowObserver,
   DISALLOW_COPY_AND_ASSIGN(WorkspaceBackdropDelegate);
 };
 
-}  // namespace internal
-
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_WORKSPACE_BACKDROP_DELEGATE_H_
diff --git a/ash/wm/mru_window_tracker.cc b/ash/wm/mru_window_tracker.cc
index 419fed5..83a805a 100644
--- a/ash/wm/mru_window_tracker.cc
+++ b/ash/wm/mru_window_tracker.cc
@@ -35,8 +35,8 @@ void AddTrackedWindows(aura::Window* root,
 // Adds windows being dragged in the docked container to |windows| list.
 void AddDraggedWindows(aura::Window* root,
                        MruWindowTracker::WindowList* windows) {
-  aura::Window* container = Shell::GetContainer(
-      root, internal::kShellWindowId_DockedContainer);
+  aura::Window* container =
+      Shell::GetContainer(root, kShellWindowId_DockedContainer);
   const MruWindowTracker::WindowList& children = container->children();
   for (MruWindowTracker::WindowList::const_iterator iter = children.begin();
        iter != children.end(); ++iter) {
diff --git a/ash/wm/mru_window_tracker_unittest.cc b/ash/wm/mru_window_tracker_unittest.cc
index 924060d..8c507e1 100644
--- a/ash/wm/mru_window_tracker_unittest.cc
+++ b/ash/wm/mru_window_tracker_unittest.cc
@@ -13,7 +13,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 class MruWindowTrackerTest : public test::AshTestBase {
  public:
@@ -80,5 +79,4 @@ TEST_F(MruWindowTrackerTest, MinimizedWindowsAreLru) {
   EXPECT_EQ(w5.get(), window_list[5]);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/overlay_event_filter.cc b/ash/wm/overlay_event_filter.cc
index ed4f316..6221e5e 100644
--- a/ash/wm/overlay_event_filter.cc
+++ b/ash/wm/overlay_event_filter.cc
@@ -11,7 +11,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 OverlayEventFilter::OverlayEventFilter()
     : delegate_(NULL) {
@@ -70,5 +69,5 @@ void OverlayEventFilter::Cancel() {
   if (delegate_)
     delegate_->Cancel();
 }
-}  // namespace internal
+
 }  // namespace ash
diff --git a/ash/wm/overlay_event_filter.h b/ash/wm/overlay_event_filter.h
index 252097c..7787c45 100644
--- a/ash/wm/overlay_event_filter.h
+++ b/ash/wm/overlay_event_filter.h
@@ -12,7 +12,6 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
-namespace internal {
 
 // EventFilter for the "overlay window", which intercepts events before they are
 // processed by the usual path (e.g. the partial screenshot UI, the keyboard
@@ -66,7 +65,6 @@ class ASH_EXPORT OverlayEventFilter : public ui::EventHandler,
   DISALLOW_COPY_AND_ASSIGN(OverlayEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_OVERLAY_EVENT_FILTER_H_
diff --git a/ash/wm/overview/window_overview.cc b/ash/wm/overview/window_overview.cc
index 34d4dc4..8c7af63 100644
--- a/ash/wm/overview/window_overview.cc
+++ b/ash/wm/overview/window_overview.cc
@@ -389,10 +389,10 @@ void WindowOverview::PositionWindowsOnRoot(
     return;
 
   gfx::Size window_size;
-  gfx::Rect total_bounds = ScreenUtil::ConvertRectToScreen(root_window,
+  gfx::Rect total_bounds = ScreenUtil::ConvertRectToScreen(
+      root_window,
       ScreenUtil::GetDisplayWorkAreaBoundsInParent(
-      Shell::GetContainer(root_window,
-                          internal::kShellWindowId_DefaultContainer)));
+          Shell::GetContainer(root_window, kShellWindowId_DefaultContainer)));
 
   // Find the minimum number of windows per row that will fit all of the
   // windows on screen.
@@ -433,10 +433,10 @@ void WindowOverview::InitializeSelectionWidget() {
   params.keep_on_top = false;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
-  params.parent = Shell::GetContainer(
-      single_root_window_ ? single_root_window_ :
-                            windows_->front()->GetRootWindow(),
-      internal::kShellWindowId_DefaultContainer);
+  params.parent = Shell::GetContainer(single_root_window_
+                                          ? single_root_window_
+                                          : windows_->front()->GetRootWindow(),
+                                      kShellWindowId_DefaultContainer);
   params.accept_events = false;
   selection_widget_->set_focus_on_creation(false);
   selection_widget_->Init(params);
diff --git a/ash/wm/overview/window_selector.h b/ash/wm/overview/window_selector.h
index d34c901..2139a17 100644
--- a/ash/wm/overview/window_selector.h
+++ b/ash/wm/overview/window_selector.h
@@ -25,15 +25,11 @@ class EventHandler;
 }
 
 namespace ash {
-
-namespace internal {
-class WindowSelectorTest;
-}
-
 class ScopedShowWindow;
 class WindowOverview;
 class WindowSelectorDelegate;
 class WindowSelectorItem;
+class WindowSelectorTest;
 
 // The WindowSelector allows selecting a window by alt-tabbing (CYCLE mode) or
 // by clicking or tapping on it (OVERVIEW mode). A WindowOverview will be shown
@@ -87,7 +83,7 @@ class ASH_EXPORT WindowSelector
       aura::Window* actual_active) OVERRIDE;
 
  private:
-  friend class internal::WindowSelectorTest;
+  friend class WindowSelectorTest;
 
   // Begins positioning windows such that all windows are visible on the screen.
   void StartOverview();
diff --git a/ash/wm/overview/window_selector_controller.h b/ash/wm/overview/window_selector_controller.h
index 2bd9697..18104f8 100644
--- a/ash/wm/overview/window_selector_controller.h
+++ b/ash/wm/overview/window_selector_controller.h
@@ -21,12 +21,8 @@ class Window;
 }
 
 namespace ash {
-
-namespace internal {
-class WindowSelectorTest;
-}
-
 class WindowSelector;
+class WindowSelectorTest;
 
 // Manages a window selector which displays an overview of all windows and
 // allows selecting a window to activate it.
@@ -58,7 +54,7 @@ class ASH_EXPORT WindowSelectorController
   virtual void OnSelectionCanceled() OVERRIDE;
 
  private:
-  friend class internal::WindowSelectorTest;
+  friend class WindowSelectorTest;
 
   // Dispatched when window selection begins.
   void OnSelectionStarted();
diff --git a/ash/wm/overview/window_selector_panels.cc b/ash/wm/overview/window_selector_panels.cc
index 37d6687..bd165b2 100644
--- a/ash/wm/overview/window_selector_panels.cc
+++ b/ash/wm/overview/window_selector_panels.cc
@@ -62,10 +62,9 @@ void ScopedTransformPanelWindow::PrepareForOverview() {
 }
 
 views::Widget* ScopedTransformPanelWindow::GetCalloutWidget() {
-  DCHECK(window()->parent()->id() == internal::kShellWindowId_PanelContainer);
-  internal::PanelLayoutManager* panel_layout_manager =
-      static_cast<internal::PanelLayoutManager*>(
-          window()->parent()->layout_manager());
+  DCHECK(window()->parent()->id() == kShellWindowId_PanelContainer);
+  PanelLayoutManager* panel_layout_manager =
+      static_cast<PanelLayoutManager*>(window()->parent()->layout_manager());
   return panel_layout_manager->GetCalloutWidgetForPanel(window());
 }
 
diff --git a/ash/wm/overview/window_selector_unittest.cc b/ash/wm/overview/window_selector_unittest.cc
index f78bcbf..20184aa 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -39,8 +39,6 @@
 #include "ui/wm/public/activation_delegate.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 class NonActivatableActivationDelegate
@@ -1038,7 +1036,7 @@ TEST_F(WindowSelectorTest, DISABLED_DragDropInProgress) {
   gfx::Rect bounds(0, 0, 400, 400);
   scoped_ptr<aura::Window> window(CreateWindow(bounds));
   test::ShellTestApi shell_test_api(Shell::GetInstance());
-  ash::internal::DragDropController* drag_drop_controller =
+  ash::DragDropController* drag_drop_controller =
       shell_test_api.drag_drop_controller();
   ui::OSExchangeData data;
   base::MessageLoopForUI::current()->PostTask(FROM_HERE,
@@ -1089,5 +1087,4 @@ TEST_F(WindowSelectorTest, HitTestingInOverview) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/overview/window_selector_window.cc b/ash/wm/overview/window_selector_window.cc
index 40b53d4..942edf4 100644
--- a/ash/wm/overview/window_selector_window.cc
+++ b/ash/wm/overview/window_selector_window.cc
@@ -28,8 +28,8 @@ views::Widget* CreateCloseWindowButton(aura::Window* root_window,
   params.can_activate = false;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params.parent = Shell::GetContainer(root_window,
-      ash::internal::kShellWindowId_OverlayContainer);
+  params.parent =
+      Shell::GetContainer(root_window, ash::kShellWindowId_OverlayContainer);
   widget->set_focus_on_creation(false);
   widget->Init(params);
   views::ImageButton* button = new views::ImageButton(listener);
diff --git a/ash/wm/panels/panel_layout_manager.cc b/ash/wm/panels/panel_layout_manager.cc
index 95db257..9266f94 100644
--- a/ash/wm/panels/panel_layout_manager.cc
+++ b/ash/wm/panels/panel_layout_manager.cc
@@ -37,9 +37,8 @@
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
+
 const int kPanelIdealSpacing = 4;
 
 const float kMaxHeightFactor = .80f;
@@ -310,7 +309,7 @@ void PanelLayoutManager::SetShelf(Shelf* shelf) {
   shelf_ = shelf;
   shelf_->AddIconObserver(this);
   if (shelf_->shelf_widget()) {
-    shelf_layout_manager_ = ash::internal::ShelfLayoutManager::ForShelf(
+    shelf_layout_manager_ = ash::ShelfLayoutManager::ForShelf(
         shelf_->shelf_widget()->GetNativeWindow());
     WillChangeVisibilityState(shelf_layout_manager_->visibility_state());
     shelf_layout_manager_->AddObserver(this);
@@ -885,5 +884,4 @@ void PanelLayoutManager::OnKeyboardBoundsChanging(
   OnWindowResized();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/panels/panel_layout_manager.h b/ash/wm/panels/panel_layout_manager.h
index 2d17b2d..f0c093d 100644
--- a/ash/wm/panels/panel_layout_manager.h
+++ b/ash/wm/panels/panel_layout_manager.h
@@ -36,10 +36,8 @@ class Widget;
 }
 
 namespace ash {
-class Shelf;
-
-namespace internal {
 class PanelCalloutWidget;
+class Shelf;
 class ShelfLayoutManager;
 
 // PanelLayoutManager is responsible for organizing panels within the
@@ -186,7 +184,6 @@ class ASH_EXPORT PanelLayoutManager
   DISALLOW_COPY_AND_ASSIGN(PanelLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_PANELS_PANEL_LAYOUT_MANAGER_H_
diff --git a/ash/wm/panels/panel_layout_manager_unittest.cc b/ash/wm/panels/panel_layout_manager_unittest.cc
index faba4f7..853f648 100644
--- a/ash/wm/panels/panel_layout_manager_unittest.cc
+++ b/ash/wm/panels/panel_layout_manager_unittest.cc
@@ -38,7 +38,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 using aura::test::WindowIsAbove;
 
@@ -75,7 +74,7 @@ class PanelLayoutManagerTest : public test::AshTestBase {
 
   aura::Window* GetPanelContainer(aura::Window* panel) {
     return Shell::GetContainer(panel->GetRootWindow(),
-                               internal::kShellWindowId_PanelContainer);
+                               kShellWindowId_PanelContainer);
   }
 
   views::Widget* GetCalloutWidgetForPanel(aura::Window* panel) {
@@ -238,9 +237,9 @@ class PanelLayoutManagerTest : public test::AshTestBase {
 
   void SetShelfAutoHideBehavior(aura::Window* window,
                                 ShelfAutoHideBehavior behavior) {
-    internal::ShelfLayoutManager* shelf =
-        RootWindowController::ForWindow(window)->shelf()->
-        shelf_layout_manager();
+    ShelfLayoutManager* shelf = RootWindowController::ForWindow(window)
+                                    ->shelf()
+                                    ->shelf_layout_manager();
     shelf->SetAutoHideBehavior(behavior);
     ShelfView* shelf_view = GetShelfView(Shelf::ForWindow(window));
     test::ShelfViewTestAPI test_api(shelf_view);
@@ -249,13 +248,13 @@ class PanelLayoutManagerTest : public test::AshTestBase {
 
   void SetShelfVisibilityState(aura::Window* window,
                                ShelfVisibilityState visibility_state) {
-    internal::ShelfLayoutManager* shelf =
-        RootWindowController::ForWindow(window)->shelf()->
-        shelf_layout_manager();
+    ShelfLayoutManager* shelf = RootWindowController::ForWindow(window)
+                                    ->shelf()
+                                    ->shelf_layout_manager();
     shelf->SetState(visibility_state);
   }
 
-  internal::ShelfView* GetShelfView(Shelf* shelf) {
+  ShelfView* GetShelfView(Shelf* shelf) {
     return test::ShelfTestAPI(shelf).shelf_view();
   }
 
@@ -609,10 +608,10 @@ TEST_F(PanelLayoutManagerTest, PanelMoveBetweenMultipleDisplays) {
   EXPECT_EQ(root_windows[1], p1_d2->GetRootWindow());
   EXPECT_EQ(root_windows[1], p2_d2->GetRootWindow());
 
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, p1_d1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, p2_d1->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, p1_d2->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, p2_d2->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, p1_d1->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, p2_d1->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, p1_d2->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, p2_d2->parent()->id());
 
   // Test a panel on 1st display.
   // Clicking on the same display has no effect.
@@ -788,5 +787,4 @@ TEST_F(PanelLayoutManagerTest, PanelsHideAndRestoreWithShelf) {
 INSTANTIATE_TEST_CASE_P(LtrRtl, PanelLayoutManagerTextDirectionTest,
                         testing::Bool());
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/panels/panel_window_event_handler.cc b/ash/wm/panels/panel_window_event_handler.cc
index a3d5d8b..006c5d8 100644
--- a/ash/wm/panels/panel_window_event_handler.cc
+++ b/ash/wm/panels/panel_window_event_handler.cc
@@ -13,7 +13,6 @@
 #include "ui/events/event.h"
 
 namespace ash {
-namespace internal {
 
 PanelWindowEventHandler::PanelWindowEventHandler() {
 }
@@ -52,5 +51,4 @@ void PanelWindowEventHandler::OnGestureEvent(ui::GestureEvent* event) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/panels/panel_window_event_handler.h b/ash/wm/panels/panel_window_event_handler.h
index c972ed1..35e63aa 100644
--- a/ash/wm/panels/panel_window_event_handler.h
+++ b/ash/wm/panels/panel_window_event_handler.h
@@ -8,7 +8,6 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
-namespace internal {
 
 // PanelWindowEventHandler minimizes panels when the user double clicks or
 // double taps on the panel header.
@@ -25,7 +24,6 @@ class PanelWindowEventHandler : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(PanelWindowEventHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_PANELS_PANEL_WINDOW_EVENT_HANDLER_H_
diff --git a/ash/wm/panels/panel_window_resizer.cc b/ash/wm/panels/panel_window_resizer.cc
index 29803e8..14632b6 100644
--- a/ash/wm/panels/panel_window_resizer.cc
+++ b/ash/wm/panels/panel_window_resizer.cc
@@ -32,11 +32,9 @@ namespace ash {
 namespace {
 const int kPanelSnapToLauncherDistance = 30;
 
-internal::PanelLayoutManager* GetPanelLayoutManager(
-    aura::Window* panel_container) {
-  DCHECK(panel_container->id() == internal::kShellWindowId_PanelContainer);
-  return static_cast<internal::PanelLayoutManager*>(
-      panel_container->layout_manager());
+PanelLayoutManager* GetPanelLayoutManager(aura::Window* panel_container) {
+  DCHECK(panel_container->id() == kShellWindowId_PanelContainer);
+  return static_cast<PanelLayoutManager*>(panel_container->layout_manager());
 }
 
 }  // namespace
@@ -74,8 +72,8 @@ void PanelWindowResizer::Drag(const gfx::Point& location, int event_flags) {
       GetPanelLayoutManager(panel_container_)->FinishDragging();
     aura::Window* dst_root = Shell::GetInstance()->display_controller()->
         GetRootWindowForDisplayId(dst_display.id());
-    panel_container_ = Shell::GetContainer(
-        dst_root, internal::kShellWindowId_PanelContainer);
+    panel_container_ =
+        Shell::GetContainer(dst_root, kShellWindowId_PanelContainer);
 
     // The panel's parent already knows that the drag is in progress for this
     // panel.
@@ -124,9 +122,8 @@ PanelWindowResizer::PanelWindowResizer(WindowResizer* next_window_resizer,
       was_attached_(window_state->panel_attached()),
       weak_ptr_factory_(this) {
   DCHECK(details().is_resizable);
-  panel_container_ = Shell::GetContainer(
-      GetTarget()->GetRootWindow(),
-      internal::kShellWindowId_PanelContainer);
+  panel_container_ = Shell::GetContainer(GetTarget()->GetRootWindow(),
+                                         kShellWindowId_PanelContainer);
   initial_panel_container_ = panel_container_;
 }
 
@@ -134,7 +131,7 @@ bool PanelWindowResizer::AttachToLauncher(const gfx::Rect& bounds,
                                           gfx::Point* offset) {
   bool should_attach = false;
   if (panel_container_) {
-    internal::PanelLayoutManager* panel_layout_manager =
+    PanelLayoutManager* panel_layout_manager =
         GetPanelLayoutManager(panel_container_);
     gfx::Rect launcher_bounds = ScreenUtil::ConvertRectFromScreen(
         GetTarget()->parent(),
diff --git a/ash/wm/panels/panel_window_resizer_unittest.cc b/ash/wm/panels/panel_window_resizer_unittest.cc
index 4debaed..07bb7a5 100644
--- a/ash/wm/panels/panel_window_resizer_unittest.cc
+++ b/ash/wm/panels/panel_window_resizer_unittest.cc
@@ -31,7 +31,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
 
 class PanelWindowResizerTest : public test::AshTestBase {
  public:
@@ -65,11 +64,9 @@ class PanelWindowResizerTest : public test::AshTestBase {
     aura::Window* window = CreateTestWindowInShellWithDelegateAndType(
         NULL, ui::wm::WINDOW_TYPE_PANEL, 0, bounds);
     shelf_delegate_->AddShelfItem(window);
-    PanelLayoutManager* manager =
-        static_cast<PanelLayoutManager*>(
-            Shell::GetContainer(window->GetRootWindow(),
-                                internal::kShellWindowId_PanelContainer)->
-                layout_manager());
+    PanelLayoutManager* manager = static_cast<PanelLayoutManager*>(
+        Shell::GetContainer(window->GetRootWindow(),
+                            kShellWindowId_PanelContainer)->layout_manager());
     manager->Relayout();
     return window;
   }
@@ -103,7 +100,7 @@ class PanelWindowResizerTest : public test::AshTestBase {
     wm::WindowState* window_state = wm::GetWindowState(window);
     EXPECT_TRUE(window_state->panel_attached());
     aura::Window* root_window = window->GetRootWindow();
-    EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+    EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
     DragStart(window);
     gfx::Rect initial_bounds = window->GetBoundsInScreen();
 
@@ -122,8 +119,7 @@ class PanelWindowResizerTest : public test::AshTestBase {
     DragEnd();
 
     EXPECT_FALSE(window_state->panel_attached());
-    EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-              window->parent()->id());
+    EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
     EXPECT_EQ(root_window, window->GetRootWindow());
 
     DragStart(window);
@@ -136,7 +132,7 @@ class PanelWindowResizerTest : public test::AshTestBase {
     EXPECT_TRUE(window_state->panel_attached());
     EXPECT_EQ(initial_bounds.x(), window->GetBoundsInScreen().x());
     EXPECT_EQ(initial_bounds.y(), window->GetBoundsInScreen().y());
-    EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+    EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
   }
 
   void TestWindowOrder(const std::vector<aura::Window*>& window_order) {
@@ -185,7 +181,7 @@ class PanelWindowResizerTest : public test::AshTestBase {
 
  private:
   scoped_ptr<WindowResizer> resizer_;
-  internal::PanelLayoutManager* panel_layout_manager_;
+  PanelLayoutManager* panel_layout_manager_;
   ShelfModel* model_;
   test::TestShelfDelegate* shelf_delegate_;
 
@@ -310,7 +306,7 @@ TEST_F(PanelWindowResizerTest, DetachThenDragAcrossDisplays) {
   EXPECT_EQ(initial_bounds.x(), window->GetBoundsInScreen().x());
   EXPECT_EQ(initial_bounds.y() - 100, window->GetBoundsInScreen().y());
   EXPECT_FALSE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 
   DragStart(window.get());
   DragMove(500, 0);
@@ -319,7 +315,7 @@ TEST_F(PanelWindowResizerTest, DetachThenDragAcrossDisplays) {
   EXPECT_EQ(initial_bounds.x() + 500, window->GetBoundsInScreen().x());
   EXPECT_EQ(initial_bounds.y() - 100, window->GetBoundsInScreen().y());
   EXPECT_FALSE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 TEST_F(PanelWindowResizerTest, DetachAcrossDisplays) {
@@ -339,7 +335,7 @@ TEST_F(PanelWindowResizerTest, DetachAcrossDisplays) {
   EXPECT_EQ(initial_bounds.x() + 500, window->GetBoundsInScreen().x());
   EXPECT_EQ(initial_bounds.y() - 100, window->GetBoundsInScreen().y());
   EXPECT_FALSE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 TEST_F(PanelWindowResizerTest, DetachThenAttachToSecondDisplay) {
@@ -372,7 +368,7 @@ TEST_F(PanelWindowResizerTest, DetachThenAttachToSecondDisplay) {
   // When dropped should move to second display's panel container.
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
   EXPECT_TRUE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
 }
 
 TEST_F(PanelWindowResizerTest, AttachToSecondDisplay) {
@@ -398,7 +394,7 @@ TEST_F(PanelWindowResizerTest, AttachToSecondDisplay) {
   // When dropped should move to second display's panel container.
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
   EXPECT_TRUE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
 }
 
 TEST_F(PanelWindowResizerTest, AttachToSecondFullscreenDisplay) {
@@ -431,7 +427,7 @@ TEST_F(PanelWindowResizerTest, AttachToSecondFullscreenDisplay) {
   // When dropped should move to second display's panel container.
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
   EXPECT_TRUE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
   EXPECT_TRUE(window->IsVisible());
   EXPECT_TRUE(wm::GetWindowState(window.get())->IsActive());
   EXPECT_EQ(initial_bounds.y() + 200, window->GetBoundsInScreen().y());
@@ -441,19 +437,19 @@ TEST_F(PanelWindowResizerTest, RevertDragRestoresAttachment) {
   scoped_ptr<aura::Window> window(
       CreatePanelWindow(gfx::Point(0, 0)));
   EXPECT_TRUE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
   DragStart(window.get());
   DragMove(0, -100);
   DragRevert();
   EXPECT_TRUE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
 
   // Detach panel.
   DragStart(window.get());
   DragMove(0, -100);
   DragEnd();
   EXPECT_FALSE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 
   // Drag back to launcher.
   DragStart(window.get());
@@ -462,7 +458,7 @@ TEST_F(PanelWindowResizerTest, RevertDragRestoresAttachment) {
   // When the drag is reverted it should remain detached.
   DragRevert();
   EXPECT_FALSE(wm::GetWindowState(window.get())->panel_attached());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 TEST_F(PanelWindowResizerTest, DragMovesToPanelLayer) {
@@ -470,17 +466,16 @@ TEST_F(PanelWindowResizerTest, DragMovesToPanelLayer) {
   DragStart(window.get());
   DragMove(0, -100);
   DragEnd();
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 
   // While moving the panel window should be moved to the panel container.
   DragStart(window.get());
   DragMove(20, 0);
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
   DragEnd();
 
   // When dropped it should return to the default container.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer,
-            window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
 }
 
 TEST_P(PanelWindowResizerTextDirectionTest, DragReordersPanelsHorizontal) {
@@ -520,7 +515,7 @@ TEST_P(PanelWindowResizerTransientTest, PanelWithTransientChild) {
   DragStart(child.get());
   DragMove(50, dy);
   // While moving the transient child window should be in the panel container.
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, child->parent()->id());
   DragEnd();
   // Child should move, |window| should not.
   EXPECT_EQ(gfx::Point(20 + 50, 20 + dy).ToString(),
@@ -532,7 +527,7 @@ TEST_P(PanelWindowResizerTransientTest, PanelWithTransientChild) {
   DragStart(child.get());
   DragMove(350, 0);
   // While moving the transient child window should be in the panel container.
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, child->parent()->id());
   DragEnd();
   // |child| should move, |window| should not.
   EXPECT_EQ(gfx::Point(20 + 50 + 350, 20 + dy).ToString(),
@@ -542,23 +537,23 @@ TEST_P(PanelWindowResizerTransientTest, PanelWithTransientChild) {
   DragStart(window.get());
   DragMove(0, -100);
   // While moving the windows should be in the panel container.
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, child->parent()->id());
   DragEnd();
   // When dropped they should return to the default container.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, child->parent()->id());
 
   // While moving the window and child should be moved to the panel container.
   DragStart(window.get());
   DragMove(20, 0);
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_PanelContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_PanelContainer, child->parent()->id());
   DragEnd();
 
   // When dropped they should return to the default container.
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, window->parent()->id());
-  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, child->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, window->parent()->id());
+  EXPECT_EQ(kShellWindowId_DefaultContainer, child->parent()->id());
 }
 
 INSTANTIATE_TEST_CASE_P(LtrRtl, PanelWindowResizerTextDirectionTest,
@@ -569,5 +564,4 @@ INSTANTIATE_TEST_CASE_P(NormalPanelPopup,
                                         ui::wm::WINDOW_TYPE_PANEL,
                                         ui::wm::WINDOW_TYPE_POPUP));
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/partial_screenshot_view.cc b/ash/wm/partial_screenshot_view.cc
index 30b12f1..cec063d 100644
--- a/ash/wm/partial_screenshot_view.cc
+++ b/ash/wm/partial_screenshot_view.cc
@@ -26,7 +26,7 @@ namespace ash {
 // A self-owned object to handle the cancel and the finish of current partial
 // screenshot session.
 class PartialScreenshotView::OverlayDelegate
-    : public internal::OverlayEventFilter::Delegate,
+    : public OverlayEventFilter::Delegate,
       public views::WidgetObserver {
  public:
   OverlayDelegate() {
@@ -42,10 +42,10 @@ class PartialScreenshotView::OverlayDelegate
   virtual void Cancel() OVERRIDE {
     // Make sure the mouse_warp_mode allows warping. It can be stopped by a
     // partial screenshot view.
-    internal::MouseCursorEventFilter* mouse_cursor_filter =
+    MouseCursorEventFilter* mouse_cursor_filter =
         Shell::GetInstance()->mouse_cursor_filter();
     mouse_cursor_filter->set_mouse_warp_mode(
-        internal::MouseCursorEventFilter::WARP_ALWAYS);
+        MouseCursorEventFilter::WARP_ALWAYS);
     for (size_t i = 0; i < widgets_.size(); ++i)
       widgets_[i]->Close();
   }
@@ -116,9 +116,8 @@ void PartialScreenshotView::Init(aura::Window* root_window) {
   params.delegate = this;
   // The partial screenshot rectangle has to be at the real top of
   // the screen.
-  params.parent = Shell::GetContainer(
-      root_window,
-      internal::kShellWindowId_OverlayContainer);
+  params.parent =
+      Shell::GetContainer(root_window, kShellWindowId_OverlayContainer);
 
   widget->Init(params);
   widget->SetContentsView(this);
@@ -194,10 +193,9 @@ bool PartialScreenshotView::OnMousePressed(const ui::MouseEvent& event) {
   // Prevent moving across displays during drag. Capturing a screenshot across
   // the displays is not supported yet.
   // TODO(mukai): remove this restriction.
-  internal::MouseCursorEventFilter* mouse_cursor_filter =
+  MouseCursorEventFilter* mouse_cursor_filter =
       Shell::GetInstance()->mouse_cursor_filter();
-  mouse_cursor_filter->set_mouse_warp_mode(
-      internal::MouseCursorEventFilter::WARP_NONE);
+  mouse_cursor_filter->set_mouse_warp_mode(MouseCursorEventFilter::WARP_NONE);
   OnSelectionStarted(event.location());
   return true;
 }
diff --git a/ash/wm/resize_shadow.cc b/ash/wm/resize_shadow.cc
index 65f6623..408db4b 100644
--- a/ash/wm/resize_shadow.cc
+++ b/ash/wm/resize_shadow.cc
@@ -40,7 +40,6 @@ void ShowLayer(ui::Layer* layer, bool visible) {
 }  // namespace
 
 namespace ash {
-namespace internal {
 
 ResizeShadow::ResizeShadow() : last_hit_test_(HTNOWHERE) {}
 
@@ -106,5 +105,4 @@ void ResizeShadow::Layout(const gfx::Rect& content_bounds) {
   image_grid_->SetContentBounds(local_bounds);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/resize_shadow.h b/ash/wm/resize_shadow.h
index 8b05d92..6add50f 100644
--- a/ash/wm/resize_shadow.h
+++ b/ash/wm/resize_shadow.h
@@ -22,7 +22,6 @@ class ImageGrid;
 }
 
 namespace ash {
-namespace internal {
 
 // A class to render the resize edge effect when the user moves their mouse
 // over a sizing edge.  This is just a visual effect; the actual resize is
@@ -60,7 +59,6 @@ class ResizeShadow {
   DISALLOW_COPY_AND_ASSIGN(ResizeShadow);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_RESIZE_SHADOW_H_
diff --git a/ash/wm/resize_shadow_and_cursor_unittest.cc b/ash/wm/resize_shadow_and_cursor_unittest.cc
index 6431409..0503a82 100644
--- a/ash/wm/resize_shadow_and_cursor_unittest.cc
+++ b/ash/wm/resize_shadow_and_cursor_unittest.cc
@@ -74,9 +74,9 @@ class ResizeShadowAndCursorTest : public AshTestBase {
   // Returns the hit test code if there is a resize shadow. Returns HTNOWHERE if
   // there is no resize shadow.
   int ResizeShadowHitTest() const {
-    ash::internal::ResizeShadow* resize_shadow =
-        ash::Shell::GetInstance()->resize_shadow_controller()->
-            GetShadowForWindowForTest(window_);
+    ash::ResizeShadow* resize_shadow = ash::Shell::GetInstance()
+                                           ->resize_shadow_controller()
+                                           ->GetShadowForWindowForTest(window_);
     return resize_shadow ? resize_shadow->GetLastHitTestForTest() : HTNOWHERE;
   }
 
diff --git a/ash/wm/resize_shadow_controller.cc b/ash/wm/resize_shadow_controller.cc
index 85778d3..e5ed6c3 100644
--- a/ash/wm/resize_shadow_controller.cc
+++ b/ash/wm/resize_shadow_controller.cc
@@ -10,7 +10,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 ResizeShadowController::ResizeShadowController() {
 }
@@ -70,5 +69,4 @@ ResizeShadow* ResizeShadowController::GetShadowForWindow(aura::Window* window) {
   return it != window_shadows_.end() ? it->second.get() : NULL;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/resize_shadow_controller.h b/ash/wm/resize_shadow_controller.h
index 1eccf4c..2bd3f12 100644
--- a/ash/wm/resize_shadow_controller.h
+++ b/ash/wm/resize_shadow_controller.h
@@ -18,8 +18,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
-
 class ResizeShadow;
 
 // ResizeShadowController observes changes to resizable windows and shows
@@ -59,7 +57,6 @@ class ASH_EXPORT ResizeShadowController : public aura::WindowObserver {
   DISALLOW_COPY_AND_ASSIGN(ResizeShadowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_RESIZE_SHADOW_CONTROLLER_H_
diff --git a/ash/wm/root_window_layout_manager.cc b/ash/wm/root_window_layout_manager.cc
index 2f7efda..282dbed 100644
--- a/ash/wm/root_window_layout_manager.cc
+++ b/ash/wm/root_window_layout_manager.cc
@@ -12,7 +12,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindowLayoutManager, public:
@@ -79,5 +78,4 @@ void RootWindowLayoutManager::SetChildBounds(
   SetChildBoundsDirect(child, requested_bounds);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/root_window_layout_manager.h b/ash/wm/root_window_layout_manager.h
index 708e306..d9fd297 100644
--- a/ash/wm/root_window_layout_manager.h
+++ b/ash/wm/root_window_layout_manager.h
@@ -25,7 +25,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // A layout manager for the root window.
 // Resizes all of its immediate children to fill the bounds of the root window.
@@ -50,7 +49,6 @@ class RootWindowLayoutManager : public aura::LayoutManager {
   DISALLOW_COPY_AND_ASSIGN(RootWindowLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
diff --git a/ash/wm/screen_dimmer.cc b/ash/wm/screen_dimmer.cc
index 4b4335e..b570c2d 100644
--- a/ash/wm/screen_dimmer.cc
+++ b/ash/wm/screen_dimmer.cc
@@ -13,8 +13,6 @@
 #include "ui/gfx/size.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Opacity for |dimming_layer_| when it's dimming the screen.
@@ -65,5 +63,4 @@ void ScreenDimmer::OnWindowBoundsChanged(aura::Window* root,
     dimming_layer_->SetBounds(gfx::Rect(root->bounds().size()));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/screen_dimmer.h b/ash/wm/screen_dimmer.h
index abbb0a5..1d6e205 100644
--- a/ash/wm/screen_dimmer.h
+++ b/ash/wm/screen_dimmer.h
@@ -16,7 +16,6 @@ class Layer;
 }
 
 namespace ash {
-namespace internal {
 
 // ScreenDimmer displays a partially-opaque layer above everything
 // else in the root window to darken the display.  It shouldn't be used
@@ -65,7 +64,6 @@ class ASH_EXPORT ScreenDimmer : public aura::WindowObserver {
   DISALLOW_COPY_AND_ASSIGN(ScreenDimmer);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SCREEN_DIMMER_H_
diff --git a/ash/wm/screen_dimmer_unittest.cc b/ash/wm/screen_dimmer_unittest.cc
index c339a9a..2ea4e96 100644
--- a/ash/wm/screen_dimmer_unittest.cc
+++ b/ash/wm/screen_dimmer_unittest.cc
@@ -23,13 +23,13 @@ class ScreenDimmerTest : public AshTestBase {
   virtual void SetUp() OVERRIDE {
     AshTestBase::SetUp();
     dimmer_ = Shell::GetPrimaryRootWindowController()->screen_dimmer();
-    test_api_.reset(new internal::ScreenDimmer::TestApi(dimmer_));
+    test_api_.reset(new ScreenDimmer::TestApi(dimmer_));
   }
 
  protected:
-  internal::ScreenDimmer* dimmer_;  // not owned
+  ScreenDimmer* dimmer_;  // not owned
 
-  scoped_ptr<internal::ScreenDimmer::TestApi> test_api_;
+  scoped_ptr<ScreenDimmer::TestApi> test_api_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScreenDimmerTest);
diff --git a/ash/wm/session_state_animator.cc b/ash/wm/session_state_animator.cc
index 586539c..9900275 100644
--- a/ash/wm/session_state_animator.cc
+++ b/ash/wm/session_state_animator.cc
@@ -15,8 +15,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Slightly-smaller size that we scale the screen down to for the pre-lock and
@@ -460,44 +458,38 @@ void SessionStateAnimator::GetContainers(int container_mask,
 
   if (container_mask & DESKTOP_BACKGROUND) {
     containers->push_back(Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_DesktopBackgroundContainer));
+        root_window, kShellWindowId_DesktopBackgroundContainer));
   }
   if (container_mask & LAUNCHER) {
-    containers->push_back(Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_ShelfContainer));
+    containers->push_back(
+        Shell::GetContainer(root_window, kShellWindowId_ShelfContainer));
   }
   if (container_mask & NON_LOCK_SCREEN_CONTAINERS) {
     // TODO(antrim): Figure out a way to eliminate a need to exclude launcher
     // in such way.
     aura::Window* non_lock_screen_containers = Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_NonLockScreenContainersContainer);
+        root_window, kShellWindowId_NonLockScreenContainersContainer);
     aura::Window::Windows children = non_lock_screen_containers->children();
 
     for (aura::Window::Windows::const_iterator it = children.begin();
          it != children.end(); ++it) {
       aura::Window* window = *it;
-      if (window->id() == internal::kShellWindowId_ShelfContainer)
+      if (window->id() == kShellWindowId_ShelfContainer)
         continue;
       containers->push_back(window);
     }
   }
   if (container_mask & LOCK_SCREEN_BACKGROUND) {
     containers->push_back(Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_LockScreenBackgroundContainer));
+        root_window, kShellWindowId_LockScreenBackgroundContainer));
   }
   if (container_mask & LOCK_SCREEN_CONTAINERS) {
     containers->push_back(Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_LockScreenContainersContainer));
+        root_window, kShellWindowId_LockScreenContainersContainer));
   }
   if (container_mask & LOCK_SCREEN_RELATED_CONTAINERS) {
     containers->push_back(Shell::GetContainer(
-        root_window,
-        internal::kShellWindowId_LockScreenRelatedContainersContainer));
+        root_window, kShellWindowId_LockScreenRelatedContainersContainer));
   }
 }
 
@@ -613,5 +605,4 @@ void SessionStateAnimator::RunAnimationForWindow(
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/session_state_animator.h b/ash/wm/session_state_animator.h
index 4cb183e..a9e43db4 100644
--- a/ash/wm/session_state_animator.h
+++ b/ash/wm/session_state_animator.h
@@ -22,7 +22,6 @@ class Layer;
 }
 
 namespace ash {
-namespace internal {
 
 // Displays onscreen animations for session state changes (lock/unlock, sign
 // out, shut down).
@@ -174,7 +173,6 @@ class ASH_EXPORT SessionStateAnimator {
   DISALLOW_COPY_AND_ASSIGN(SessionStateAnimator);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SESSION_STATE_ANIMATOR_H_
diff --git a/ash/wm/stacking_controller.cc b/ash/wm/stacking_controller.cc
index 62263d4..18eccce 100644
--- a/ash/wm/stacking_controller.cc
+++ b/ash/wm/stacking_controller.cc
@@ -44,10 +44,8 @@ bool HasTransientParentWindow(const aura::Window* window) {
       ui::wm::WINDOW_TYPE_UNKNOWN;
 }
 
-internal::AlwaysOnTopController*
-GetAlwaysOnTopController(aura::Window* root_window) {
-  return internal::GetRootWindowController(root_window)->
-      always_on_top_controller();
+AlwaysOnTopController* GetAlwaysOnTopController(aura::Window* root_window) {
+  return GetRootWindowController(root_window)->always_on_top_controller();
 }
 
 }  // namespace
@@ -82,24 +80,22 @@ aura::Window* StackingController::GetDefaultParent(aura::Window* context,
       if (IsSystemModal(window))
         return GetSystemModalContainer(target_root, window);
       else if (HasTransientParentWindow(window))
-        return internal::RootWindowController::GetContainerForWindow(
+        return RootWindowController::GetContainerForWindow(
             ::wm::GetTransientParent(window));
       return GetAlwaysOnTopController(target_root)->GetContainer(window);
     case ui::wm::WINDOW_TYPE_CONTROL:
-      return GetContainerById(
-          target_root, internal::kShellWindowId_UnparentedControlContainer);
+      return GetContainerById(target_root,
+                              kShellWindowId_UnparentedControlContainer);
     case ui::wm::WINDOW_TYPE_PANEL:
       if (wm::GetWindowState(window)->panel_attached())
-        return GetContainerById(target_root,
-                                internal::kShellWindowId_PanelContainer);
+        return GetContainerById(target_root, kShellWindowId_PanelContainer);
       else
         return GetAlwaysOnTopController(target_root)->GetContainer(window);
     case ui::wm::WINDOW_TYPE_MENU:
-      return GetContainerById(
-          target_root, internal::kShellWindowId_MenuContainer);
+      return GetContainerById(target_root, kShellWindowId_MenuContainer);
     case ui::wm::WINDOW_TYPE_TOOLTIP:
-      return GetContainerById(
-          target_root, internal::kShellWindowId_DragImageAndTooltipContainer);
+      return GetContainerById(target_root,
+                              kShellWindowId_DragImageAndTooltipContainer);
     default:
       NOTREACHED() << "Window " << window->id()
                    << " has unhandled type " << window->type();
@@ -124,8 +120,7 @@ aura::Window* StackingController::GetSystemModalContainer(
       Shell::GetInstance()->session_state_delegate();
   if (!session_state_delegate->IsUserSessionBlocked() ||
       !::wm::GetTransientParent(window)) {
-    return GetContainerById(root,
-                            internal::kShellWindowId_SystemModalContainer);
+    return GetContainerById(root, kShellWindowId_SystemModalContainer);
   }
 
   // Otherwise those that originate from LockScreen container and above are
@@ -133,12 +128,10 @@ aura::Window* StackingController::GetSystemModalContainer(
   int window_container_id =
       ::wm::GetTransientParent(window)->parent()->id();
   aura::Window* container = NULL;
-  if (window_container_id < internal::kShellWindowId_LockScreenContainer) {
-    container = GetContainerById(
-        root, internal::kShellWindowId_SystemModalContainer);
+  if (window_container_id < kShellWindowId_LockScreenContainer) {
+    container = GetContainerById(root, kShellWindowId_SystemModalContainer);
   } else {
-    container = GetContainerById(
-        root, internal::kShellWindowId_LockSystemModalContainer);
+    container = GetContainerById(root, kShellWindowId_LockSystemModalContainer);
   }
 
   return container;
diff --git a/ash/wm/stacking_controller.h b/ash/wm/stacking_controller.h
index bbe715e..8c76aeb 100644
--- a/ash/wm/stacking_controller.h
+++ b/ash/wm/stacking_controller.h
@@ -12,9 +12,7 @@
 #include "ui/aura/client/window_tree_client.h"
 
 namespace ash {
-namespace internal {
 class AlwaysOnTopController;
-}
 
 class ASH_EXPORT StackingController : public aura::client::WindowTreeClient {
  public:
diff --git a/ash/wm/stacking_controller_unittest.cc b/ash/wm/stacking_controller_unittest.cc
index c975169..c091e03 100644
--- a/ash/wm/stacking_controller_unittest.cc
+++ b/ash/wm/stacking_controller_unittest.cc
@@ -15,7 +15,6 @@
 using aura::Window;
 
 namespace ash {
-namespace internal {
 
 class StackingControllerTest : public test::AshTestBase {
  public:
@@ -60,5 +59,4 @@ TEST_F(StackingControllerTest, TransientParent) {
   EXPECT_EQ(launcher, w1->parent());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/status_area_layout_manager.cc b/ash/wm/status_area_layout_manager.cc
index d9e0424..a1bf98e 100644
--- a/ash/wm/status_area_layout_manager.cc
+++ b/ash/wm/status_area_layout_manager.cc
@@ -12,7 +12,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaLayoutManager, public:
@@ -77,5 +76,4 @@ void StatusAreaLayoutManager::LayoutStatusArea() {
   shelf_->shelf_layout_manager()->LayoutShelf();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/status_area_layout_manager.h b/ash/wm/status_area_layout_manager.h
index 8e6944d..9f255ce 100644
--- a/ash/wm/status_area_layout_manager.h
+++ b/ash/wm/status_area_layout_manager.h
@@ -11,7 +11,6 @@
 
 namespace ash {
 class ShelfWidget;
-namespace internal {
 
 // StatusAreaLayoutManager is a layout manager responsible for the status area.
 // In any case when status area needs relayout it redirects this call to
@@ -45,7 +44,6 @@ class StatusAreaLayoutManager : public aura::LayoutManager {
   DISALLOW_COPY_AND_ASSIGN(StatusAreaLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_STATUS_AREA_LAYOUT_MANAGER_H_
diff --git a/ash/wm/system_background_controller.cc b/ash/wm/system_background_controller.cc
index 7e4054e..86ec63d 100644
--- a/ash/wm/system_background_controller.cc
+++ b/ash/wm/system_background_controller.cc
@@ -9,7 +9,6 @@
 #include "ui/compositor/layer_type.h"
 
 namespace ash {
-namespace internal {
 
 SystemBackgroundController::SystemBackgroundController(
     aura::Window* root_window,
@@ -41,5 +40,4 @@ void SystemBackgroundController::OnWindowBoundsChanged(
   layer_->SetBounds(gfx::Rect(root_window_->layer()->bounds().size()));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/system_background_controller.h b/ash/wm/system_background_controller.h
index 8d74cdd..95c4d5c 100644
--- a/ash/wm/system_background_controller.h
+++ b/ash/wm/system_background_controller.h
@@ -18,7 +18,6 @@ class Layer;
 }
 
 namespace ash {
-namespace internal {
 
 // SystemBackgroundController manages a ui::Layer that's stacked at the bottom
 // of an aura::RootWindow's children.  It exists solely to obscure portions of
@@ -48,7 +47,6 @@ class SystemBackgroundController : public aura::WindowObserver {
   DISALLOW_COPY_AND_ASSIGN(SystemBackgroundController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SYSTEM_BACKGROUND_CONTROLLER_H_
diff --git a/ash/wm/system_gesture_event_filter.cc b/ash/wm/system_gesture_event_filter.cc
index 1c31832..e00a093 100644
--- a/ash/wm/system_gesture_event_filter.cc
+++ b/ash/wm/system_gesture_event_filter.cc
@@ -19,7 +19,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 
 SystemGestureEventFilter::SystemGestureEventFilter()
     : long_press_affordance_(new LongPressAffordanceHandler),
@@ -69,5 +68,4 @@ void SystemGestureEventFilter::OnGestureEvent(ui::GestureEvent* event) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/system_gesture_event_filter.h b/ash/wm/system_gesture_event_filter.h
index 8fe82db..43bf758 100644
--- a/ash/wm/system_gesture_event_filter.h
+++ b/ash/wm/system_gesture_event_filter.h
@@ -9,16 +9,14 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
+class LongPressAffordanceHandler;
+class OverviewGestureHandler;
+class ShelfGestureHandler;
 
 namespace test {
 class SystemGestureEventFilterTest;
 }
 
-namespace internal {
-class LongPressAffordanceHandler;
-class OverviewGestureHandler;
-class ShelfGestureHandler;
-
 // An event filter which handles system level gesture events.
 class SystemGestureEventFilter : public ui::EventHandler {
  public:
@@ -41,7 +39,6 @@ class SystemGestureEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(SystemGestureEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SYSTEM_GESTURE_EVENT_FILTER_H_
diff --git a/ash/wm/system_gesture_event_filter_unittest.cc b/ash/wm/system_gesture_event_filter_unittest.cc
index 39cdac8..47f46df 100644
--- a/ash/wm/system_gesture_event_filter_unittest.cc
+++ b/ash/wm/system_gesture_event_filter_unittest.cc
@@ -114,14 +114,14 @@ class SystemGestureEventFilterTest
   SystemGestureEventFilterTest() : AshTestBase(), docked_enabled_(GetParam()) {}
   virtual ~SystemGestureEventFilterTest() {}
 
-  internal::LongPressAffordanceHandler* GetLongPressAffordance() {
+  LongPressAffordanceHandler* GetLongPressAffordance() {
     ShellTestApi shell_test(Shell::GetInstance());
     return shell_test.system_gesture_event_filter()->
         long_press_affordance_.get();
   }
 
-  base::OneShotTimer<internal::LongPressAffordanceHandler>*
-      GetLongPressAffordanceTimer() {
+  base::OneShotTimer<LongPressAffordanceHandler>*
+  GetLongPressAffordanceTimer() {
     return &GetLongPressAffordance()->timer_;
   }
 
@@ -194,7 +194,7 @@ TEST_P(SystemGestureEventFilterTest, LongPressAffordanceStateOnCaptureLoss) {
   ASSERT_FALSE(details.dispatcher_destroyed);
   EXPECT_TRUE(window1->HasCapture());
 
-  base::OneShotTimer<internal::LongPressAffordanceHandler>* timer =
+  base::OneShotTimer<LongPressAffordanceHandler>* timer =
       GetLongPressAffordanceTimer();
   EXPECT_TRUE(timer->IsRunning());
   EXPECT_EQ(window1, GetLongPressAffordanceTarget());
diff --git a/ash/wm/system_modal_container_event_filter.cc b/ash/wm/system_modal_container_event_filter.cc
index 4412a9c..c8400cf 100644
--- a/ash/wm/system_modal_container_event_filter.cc
+++ b/ash/wm/system_modal_container_event_filter.cc
@@ -9,7 +9,6 @@
 #include "ui/events/event.h"
 
 namespace ash {
-namespace internal {
 
 SystemModalContainerEventFilter::SystemModalContainerEventFilter(
     SystemModalContainerEventFilterDelegate* delegate)
@@ -32,5 +31,4 @@ void SystemModalContainerEventFilter::OnMouseEvent(
     event->StopPropagation();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/system_modal_container_event_filter.h b/ash/wm/system_modal_container_event_filter.h
index e1f2e8e..7c00d6f 100644
--- a/ash/wm/system_modal_container_event_filter.h
+++ b/ash/wm/system_modal_container_event_filter.h
@@ -11,7 +11,6 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
-namespace internal {
 
 class SystemModalContainerEventFilterDelegate;
 
@@ -31,7 +30,6 @@ class ASH_EXPORT SystemModalContainerEventFilter : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(SystemModalContainerEventFilter);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SYSTEM_MODAL_CONTAINER_EVENT_FILTER_H_
diff --git a/ash/wm/system_modal_container_event_filter_delegate.h b/ash/wm/system_modal_container_event_filter_delegate.h
index 4e27d00..a5765f6 100644
--- a/ash/wm/system_modal_container_event_filter_delegate.h
+++ b/ash/wm/system_modal_container_event_filter_delegate.h
@@ -12,7 +12,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
 
 class ASH_EXPORT SystemModalContainerEventFilterDelegate {
  public:
@@ -20,7 +19,6 @@ class ASH_EXPORT SystemModalContainerEventFilterDelegate {
   virtual bool CanWindowReceiveEvents(aura::Window* window) = 0;
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_MODALITY_EVENT_FILTER_DELEGATE_H_
diff --git a/ash/wm/system_modal_container_layout_manager.cc b/ash/wm/system_modal_container_layout_manager.cc
index 6937501..89a7740 100644
--- a/ash/wm/system_modal_container_layout_manager.cc
+++ b/ash/wm/system_modal_container_layout_manager.cc
@@ -27,7 +27,6 @@
 #include "ui/wm/core/compound_event_filter.h"
 
 namespace ash {
-namespace internal {
 
 ////////////////////////////////////////////////////////////////////////////////
 // SystemModalContainerLayoutManager, public:
@@ -66,7 +65,7 @@ void SystemModalContainerLayoutManager::OnWindowAddedToLayout(
          child->type() == ui::wm::WINDOW_TYPE_NORMAL ||
          child->type() == ui::wm::WINDOW_TYPE_POPUP);
   DCHECK(
-      container_->id() != internal::kShellWindowId_LockSystemModalContainer ||
+      container_->id() != kShellWindowId_LockSystemModalContainer ||
       Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked());
 
   child->AddObserver(this);
@@ -133,7 +132,7 @@ bool SystemModalContainerLayoutManager::CanWindowReceiveEvents(
   // This container can not handle events if the screen is locked and it is not
   // above the lock screen layer (crbug.com/110920).
   if (Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked() &&
-      container_->id() < ash::internal::kShellWindowId_LockScreenContainer)
+      container_->id() < ash::kShellWindowId_LockScreenContainer)
     return true;
   return wm::GetActivatableWindow(window) == modal_window();
 }
@@ -188,8 +187,8 @@ void SystemModalContainerLayoutManager::DestroyModalBackground() {
 bool SystemModalContainerLayoutManager::IsModalBackground(
     aura::Window* window) {
   int id = window->parent()->id();
-  if (id != internal::kShellWindowId_SystemModalContainer &&
-      id != internal::kShellWindowId_LockSystemModalContainer)
+  if (id != kShellWindowId_SystemModalContainer &&
+      id != kShellWindowId_LockSystemModalContainer)
     return false;
   SystemModalContainerLayoutManager* layout_manager =
       static_cast<SystemModalContainerLayoutManager*>(
@@ -220,5 +219,4 @@ void SystemModalContainerLayoutManager::RemoveModalWindow(
     modal_windows_.erase(it);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/system_modal_container_layout_manager.h b/ash/wm/system_modal_container_layout_manager.h
index 76618ec..0833cc8 100644
--- a/ash/wm/system_modal_container_layout_manager.h
+++ b/ash/wm/system_modal_container_layout_manager.h
@@ -26,7 +26,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // LayoutManager for the modal window container.
 class ASH_EXPORT SystemModalContainerLayoutManager
@@ -92,7 +91,6 @@ class ASH_EXPORT SystemModalContainerLayoutManager
   DISALLOW_COPY_AND_ASSIGN(SystemModalContainerLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SYSTEM_MODAL_CONTAINER_LAYOUT_MANAGER_H_
diff --git a/ash/wm/system_modal_container_layout_manager_unittest.cc b/ash/wm/system_modal_container_layout_manager_unittest.cc
index af7c4f3..a150ef6 100644
--- a/ash/wm/system_modal_container_layout_manager_unittest.cc
+++ b/ash/wm/system_modal_container_layout_manager_unittest.cc
@@ -29,7 +29,7 @@ namespace {
 
 aura::Window* GetModalContainer() {
   return Shell::GetPrimaryRootWindowController()->GetContainer(
-      ash::internal::kShellWindowId_SystemModalContainer);
+      ash::kShellWindowId_SystemModalContainer);
 }
 
 bool AllRootWindowsHaveModalBackgroundsForContainer(int container_id) {
@@ -38,21 +38,20 @@ bool AllRootWindowsHaveModalBackgroundsForContainer(int container_id) {
   bool has_modal_screen = !containers.empty();
   for (std::vector<aura::Window*>::iterator iter = containers.begin();
        iter != containers.end(); ++iter) {
-    has_modal_screen &=
-        static_cast<internal::SystemModalContainerLayoutManager*>(
-            (*iter)->layout_manager())->has_modal_background();
+    has_modal_screen &= static_cast<SystemModalContainerLayoutManager*>(
+                            (*iter)->layout_manager())->has_modal_background();
   }
   return has_modal_screen;
 }
 
 bool AllRootWindowsHaveLockedModalBackgrounds() {
   return AllRootWindowsHaveModalBackgroundsForContainer(
-      internal::kShellWindowId_LockSystemModalContainer);
+      kShellWindowId_LockSystemModalContainer);
 }
 
 bool AllRootWindowsHaveModalBackgrounds() {
   return AllRootWindowsHaveModalBackgroundsForContainer(
-      internal::kShellWindowId_SystemModalContainer);
+      kShellWindowId_SystemModalContainer);
 }
 
 class TestWindow : public views::WidgetDelegateView {
@@ -313,7 +312,7 @@ TEST_F(SystemModalContainerLayoutManagerTest, EventFocusContainers) {
     EventTestWindow* lock_delegate = new EventTestWindow(false);
     scoped_ptr<aura::Window> lock(lock_delegate->OpenTestWindowWithParent(
         Shell::GetPrimaryRootWindowController()->GetContainer(
-            ash::internal::kShellWindowId_LockScreenContainer)));
+            ash::kShellWindowId_LockScreenContainer)));
     EXPECT_TRUE(wm::IsActiveWindow(lock.get()));
     e1.ClickLeftButton();
     EXPECT_EQ(1, lock_delegate->mouse_presses());
@@ -338,8 +337,10 @@ TEST_F(SystemModalContainerLayoutManagerTest, EventFocusContainers) {
 // is hidden.
 TEST_F(SystemModalContainerLayoutManagerTest, ShowModalWhileHidden) {
   // Hide the lock screen.
-  Shell::GetPrimaryRootWindowController()->GetContainer(
-      internal::kShellWindowId_SystemModalContainer)->layer()->SetOpacity(0);
+  Shell::GetPrimaryRootWindowController()
+      ->GetContainer(kShellWindowId_SystemModalContainer)
+      ->layer()
+      ->SetOpacity(0);
 
   // Create a modal window.
   scoped_ptr<aura::Window> parent(OpenToplevelTestWindow(false));
@@ -409,7 +410,7 @@ TEST_F(SystemModalContainerLayoutManagerTest, ShowNormalBackgroundOrLocked) {
     BlockUserSession(static_cast<UserSessionBlockReason>(block_reason));
     scoped_ptr<aura::Window> lock_parent(OpenTestWindowWithParent(
         Shell::GetPrimaryRootWindowController()->GetContainer(
-            ash::internal::kShellWindowId_LockScreenContainer),
+            ash::kShellWindowId_LockScreenContainer),
         false));
     scoped_ptr<aura::Window> lock_modal_window(OpenTestWindowWithParent(
         lock_parent.get(), true));
@@ -447,9 +448,9 @@ TEST_F(SystemModalContainerLayoutManagerTest, MultiDisplays) {
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   EXPECT_EQ(2U, root_windows.size());
   aura::Window* container1 = Shell::GetContainer(
-      root_windows[0], ash::internal::kShellWindowId_SystemModalContainer);
+      root_windows[0], ash::kShellWindowId_SystemModalContainer);
   aura::Window* container2 = Shell::GetContainer(
-      root_windows[1], ash::internal::kShellWindowId_SystemModalContainer);
+      root_windows[1], ash::kShellWindowId_SystemModalContainer);
 
   scoped_ptr<aura::Window> modal1(
       OpenTestWindowWithParent(container1, true));
diff --git a/ash/wm/toplevel_window_event_handler.cc b/ash/wm/toplevel_window_event_handler.cc
index 872fd03..8b6c9ba 100644
--- a/ash/wm/toplevel_window_event_handler.cc
+++ b/ash/wm/toplevel_window_event_handler.cc
@@ -232,14 +232,14 @@ void ToplevelWindowEventHandler::OnGestureEvent(ui::GestureEvent* event) {
       if (!(WindowResizer::GetBoundsChangeForWindowComponent(component) &
             WindowResizer::kBoundsChange_Resizes))
         return;
-      internal::ResizeShadowController* controller =
+      ResizeShadowController* controller =
           Shell::GetInstance()->resize_shadow_controller();
       if (controller)
         controller->ShowShadow(target, component);
       return;
     }
     case ui::ET_GESTURE_END: {
-      internal::ResizeShadowController* controller =
+      ResizeShadowController* controller =
           Shell::GetInstance()->resize_shadow_controller();
       if (controller)
         controller->HideShadow(target);
@@ -532,7 +532,7 @@ void ToplevelWindowEventHandler::HandleMouseMoved(
 
   // TODO(jamescook): Move the resize cursor update code into here from
   // CompoundEventFilter?
-  internal::ResizeShadowController* controller =
+  ResizeShadowController* controller =
       Shell::GetInstance()->resize_shadow_controller();
   if (controller) {
     if (event->flags() & ui::EF_IS_NON_CLIENT) {
@@ -554,7 +554,7 @@ void ToplevelWindowEventHandler::HandleMouseExited(
   if (event->phase() != ui::EP_POSTTARGET)
     return;
 
-  internal::ResizeShadowController* controller =
+  ResizeShadowController* controller =
       Shell::GetInstance()->resize_shadow_controller();
   if (controller)
     controller->HideShadow(target);
diff --git a/ash/wm/toplevel_window_event_handler_unittest.cc b/ash/wm/toplevel_window_event_handler_unittest.cc
index a387067..3aa25ba 100644
--- a/ash/wm/toplevel_window_event_handler_unittest.cc
+++ b/ash/wm/toplevel_window_event_handler_unittest.cc
@@ -70,9 +70,8 @@ class ToplevelWindowEventHandlerTest : public AshTestBase {
     w1->SetType(ui::wm::WINDOW_TYPE_NORMAL);
     w1->set_id(1);
     w1->Init(aura::WINDOW_LAYER_TEXTURED);
-    aura::Window* parent =
-      Shell::GetContainer(Shell::GetPrimaryRootWindow(),
-                          internal::kShellWindowId_AlwaysOnTopContainer);
+    aura::Window* parent = Shell::GetContainer(
+        Shell::GetPrimaryRootWindow(), kShellWindowId_AlwaysOnTopContainer);
     parent->AddChild(w1);
     w1->SetBounds(gfx::Rect(0, 0, 100, 100));
     w1->Show();
@@ -477,8 +476,9 @@ TEST_F(ToplevelWindowEventHandlerTest, GestureDragMinimizeLoginScreen) {
   SetUserLoggedIn(false);
 
   scoped_ptr<aura::Window> target(CreateWindow(HTCAPTION));
-  aura::Window* lock = internal::RootWindowController::ForWindow(target.get())->
-      GetContainer(internal::kShellWindowId_LockSystemModalContainer);
+  aura::Window* lock =
+      RootWindowController::ForWindow(target.get())
+          ->GetContainer(kShellWindowId_LockSystemModalContainer);
   lock->AddChild(target.get());
   aura::test::EventGenerator generator(Shell::GetPrimaryRootWindow(),
                                        target.get());
diff --git a/ash/wm/video_detector.cc b/ash/wm/video_detector.cc
index 38aef18..f0a7aaa 100644
--- a/ash/wm/video_detector.cc
+++ b/ash/wm/video_detector.cc
@@ -131,8 +131,8 @@ void VideoDetector::MaybeNotifyObservers(aura::Window* window,
   // http://crbug.com/340666
   bool fullscreen_window_exists = false;
   std::vector<aura::Window*> containers =
-      Shell::GetContainersFromAllRootWindows(
-          internal::kShellWindowId_DefaultContainer, NULL);
+      Shell::GetContainersFromAllRootWindows(kShellWindowId_DefaultContainer,
+                                             NULL);
   for (std::vector<aura::Window*>::const_iterator container =
        containers.begin(); container != containers.end(); ++container) {
     const aura::Window::Windows& windows = (*container)->children();
diff --git a/ash/wm/window_animations.cc b/ash/wm/window_animations.cc
index 109aa1b..3d195ae 100644
--- a/ash/wm/window_animations.cc
+++ b/ash/wm/window_animations.cc
@@ -468,8 +468,7 @@ gfx::Rect GetMinimizeAnimationTargetBoundsInScreen(aura::Window* window) {
   // correctly and the window can be animated to the launcher item's light
   // bar.
   if (item_rect.width() != 0 || item_rect.height() != 0) {
-    internal::ShelfLayoutManager* layout_manager =
-        internal::ShelfLayoutManager::ForShelf(window);
+    ShelfLayoutManager* layout_manager = ShelfLayoutManager::ForShelf(window);
     if (layout_manager->visibility_state() == SHELF_AUTO_HIDE) {
       gfx::Rect shelf_bounds = shelf->shelf_widget()->GetWindowBoundsInScreen();
       switch (layout_manager->GetAlignment()) {
diff --git a/ash/wm/window_modality_controller_unittest.cc b/ash/wm/window_modality_controller_unittest.cc
index c829171..910b369 100644
--- a/ash/wm/window_modality_controller_unittest.cc
+++ b/ash/wm/window_modality_controller_unittest.cc
@@ -20,7 +20,6 @@
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
 
 typedef test::AshTestBase WindowModalityControllerTest;
 
@@ -560,5 +559,4 @@ TEST_F(WindowModalityControllerTest, ChildModalAncestor) {
   EXPECT_TRUE(wm::IsActiveWindow(w4.get()));
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/window_properties.cc b/ash/wm/window_properties.cc
index ced25b2..1689c90 100644
--- a/ash/wm/window_properties.cc
+++ b/ash/wm/window_properties.cc
@@ -10,10 +10,10 @@
 DECLARE_WINDOW_PROPERTY_TYPE(ash::wm::WindowState*);
 
 namespace ash {
-namespace internal {
+
 DEFINE_WINDOW_PROPERTY_KEY(bool, kStayInSameRootWindowKey, false);
 DEFINE_WINDOW_PROPERTY_KEY(bool, kUsesScreenCoordinatesKey, false);
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(wm::WindowState,
                                  kWindowStateKey, NULL);
-}  // namespace internal
+
 }  // namespace ash
diff --git a/ash/wm/window_properties.h b/ash/wm/window_properties.h
index 74ae495..c99d21d 100644
--- a/ash/wm/window_properties.h
+++ b/ash/wm/window_properties.h
@@ -19,7 +19,6 @@ namespace ash {
 namespace wm {
 class WindowState;
 }  // namespace wm
-namespace internal {
 
 // Shell-specific window property keys.
 
@@ -40,7 +39,6 @@ extern const aura::WindowProperty<wm::WindowState*>* const kWindowStateKey;
 
 // Alphabetical sort.
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_PROPERTIES_H_
diff --git a/ash/wm/window_resizer.cc b/ash/wm/window_resizer.cc
index 14c1fd9..08ff0c4 100644
--- a/ash/wm/window_resizer.cc
+++ b/ash/wm/window_resizer.cc
@@ -142,10 +142,9 @@ gfx::Rect WindowResizer::CalculateBoundsForDrag(
     gfx::Rect work_area =
         Shell::GetScreen()->GetDisplayNearestWindow(GetTarget()).work_area();
     aura::Window* dock_container = Shell::GetContainer(
-        GetTarget()->GetRootWindow(),
-        internal::kShellWindowId_DockedContainer);
-    internal::DockedWindowLayoutManager* dock_layout =
-        static_cast<internal::DockedWindowLayoutManager*>(
+        GetTarget()->GetRootWindow(), kShellWindowId_DockedContainer);
+    DockedWindowLayoutManager* dock_layout =
+        static_cast<DockedWindowLayoutManager*>(
             dock_container->layout_manager());
 
     work_area.Union(dock_layout->docked_bounds());
@@ -211,11 +210,11 @@ gfx::Rect WindowResizer::CalculateBoundsForDrag(
     // calculate the target display after the drag.
     const gfx::Display& display =
         Shell::GetScreen()->GetDisplayMatching(near_passed_location);
-    aura::Window* dock_container = Shell::GetContainer(
-        wm::GetRootWindowMatching(near_passed_location),
-        internal::kShellWindowId_DockedContainer);
-    internal::DockedWindowLayoutManager* dock_layout =
-        static_cast<internal::DockedWindowLayoutManager*>(
+    aura::Window* dock_container =
+        Shell::GetContainer(wm::GetRootWindowMatching(near_passed_location),
+                            kShellWindowId_DockedContainer);
+    DockedWindowLayoutManager* dock_layout =
+        static_cast<DockedWindowLayoutManager*>(
             dock_container->layout_manager());
 
     gfx::Rect screen_work_area = display.work_area();
diff --git a/ash/wm/window_state.cc b/ash/wm/window_state.cc
index 9af59ca..7714aca 100644
--- a/ash/wm/window_state.cc
+++ b/ash/wm/window_state.cc
@@ -150,7 +150,7 @@ bool WindowState::IsActive() const {
 
 bool WindowState::IsDocked() const {
   return window_->parent() &&
-      window_->parent()->id() == internal::kShellWindowId_DockedContainer;
+         window_->parent()->id() == kShellWindowId_DockedContainer;
 }
 
 bool WindowState::CanMaximize() const {
@@ -158,12 +158,11 @@ bool WindowState::CanMaximize() const {
 }
 
 bool WindowState::CanMinimize() const {
-  internal::RootWindowController* controller =
-      internal::RootWindowController::ForWindow(window_);
+  RootWindowController* controller = RootWindowController::ForWindow(window_);
   if (!controller)
     return false;
-  aura::Window* lockscreen = controller->GetContainer(
-      internal::kShellWindowId_LockScreenContainersContainer);
+  aura::Window* lockscreen =
+      controller->GetContainer(kShellWindowId_LockScreenContainersContainer);
   if (lockscreen->Contains(window_))
     return false;
 
@@ -418,10 +417,10 @@ WindowState* GetActiveWindowState() {
 WindowState* GetWindowState(aura::Window* window) {
   if (!window)
     return NULL;
-  WindowState* settings = window->GetProperty(internal::kWindowStateKey);
+  WindowState* settings = window->GetProperty(kWindowStateKey);
   if(!settings) {
     settings = new WindowState(window);
-    window->SetProperty(internal::kWindowStateKey, settings);
+    window->SetProperty(kWindowStateKey, settings);
   }
   return settings;
 }
diff --git a/ash/wm/window_state.h b/ash/wm/window_state.h
index 8bfb16e..4de1f9d 100644
--- a/ash/wm/window_state.h
+++ b/ash/wm/window_state.h
@@ -24,10 +24,8 @@ class Rect;
 }
 
 namespace ash {
-namespace internal {
 class WorkspaceLayoutManager;
 class MaximizeModeWindowState;
-}
 
 namespace wm {
 class WindowStateDelegate;
@@ -296,7 +294,7 @@ class ASH_EXPORT WindowState : public aura::WindowObserver {
 
  private:
   friend class DefaultState;
-  friend class ash::internal::MaximizeModeWindowState;
+  friend class ash::MaximizeModeWindowState;
   FRIEND_TEST_ALL_PREFIXES(WindowAnimationsTest, CrossFadeToBounds);
 
   WindowStateDelegate* delegate() { return delegate_.get(); }
diff --git a/ash/wm/workspace/magnetism_matcher.cc b/ash/wm/workspace/magnetism_matcher.cc
index e7d674b..d486f61 100644
--- a/ash/wm/workspace/magnetism_matcher.cc
+++ b/ash/wm/workspace/magnetism_matcher.cc
@@ -8,8 +8,6 @@
 #include <cmath>
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Returns true if |a| is close enough to |b| that the two edges snap.
@@ -190,5 +188,4 @@ void MagnetismMatcher::AttachToSecondaryEdge(
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/magnetism_matcher.h b/ash/wm/workspace/magnetism_matcher.h
index ff1f528..5c17c7a58 100644
--- a/ash/wm/workspace/magnetism_matcher.h
+++ b/ash/wm/workspace/magnetism_matcher.h
@@ -15,7 +15,6 @@
 #include "ui/gfx/rect.h"
 
 namespace ash {
-namespace internal {
 
 enum MagnetismEdge {
   MAGNETISM_EDGE_TOP    = 1 << 0,
@@ -185,7 +184,6 @@ class ASH_EXPORT MagnetismMatcher {
   DISALLOW_COPY_AND_ASSIGN(MagnetismMatcher);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_MAGNETISM_MATCHER_H_
diff --git a/ash/wm/workspace/magnetism_matcher_unittest.cc b/ash/wm/workspace/magnetism_matcher_unittest.cc
index 054622f..6c7ea9b 100644
--- a/ash/wm/workspace/magnetism_matcher_unittest.cc
+++ b/ash/wm/workspace/magnetism_matcher_unittest.cc
@@ -7,7 +7,6 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
-namespace internal {
 
 // Trivial test case verifying assertions on left edge.
 TEST(MagnetismMatcherTest, TrivialLeft) {
@@ -166,6 +165,5 @@ TEST(MagnetismMatcherTest, ObscureTrailing) {
   EXPECT_EQ(SECONDARY_MAGNETISM_EDGE_NONE, edge.secondary_edge);
 }
 
-}  // namespace internal
 }  // namespace ash
 
diff --git a/ash/wm/workspace/multi_window_resize_controller.cc b/ash/wm/workspace/multi_window_resize_controller.cc
index df43914..347b117 100644
--- a/ash/wm/workspace/multi_window_resize_controller.cc
+++ b/ash/wm/workspace/multi_window_resize_controller.cc
@@ -29,8 +29,6 @@
 using aura::Window;
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Delay before showing.
@@ -386,9 +384,8 @@ void MultiWindowResizeController::ShowNow() {
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-  params.parent = Shell::GetContainer(
-      Shell::GetTargetRootWindow(),
-      internal::kShellWindowId_AlwaysOnTopContainer);
+  params.parent = Shell::GetContainer(Shell::GetTargetRootWindow(),
+                                      kShellWindowId_AlwaysOnTopContainer);
   params.can_activate = false;
   ResizeView* view = new ResizeView(this, windows_.direction);
   resize_widget_->set_focus_on_creation(false);
@@ -543,5 +540,4 @@ bool MultiWindowResizeController::IsOverWindow(
       window->delegate()->GetNonClientComponent(window_loc) == component;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/multi_window_resize_controller.h b/ash/wm/workspace/multi_window_resize_controller.h
index 6dd342e..5e21b24 100644
--- a/ash/wm/workspace/multi_window_resize_controller.h
+++ b/ash/wm/workspace/multi_window_resize_controller.h
@@ -24,8 +24,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
-
 class MultiWindowResizeControllerTest;
 class WorkspaceWindowResizer;
 
@@ -180,7 +178,6 @@ class ASH_EXPORT MultiWindowResizeController :
   DISALLOW_COPY_AND_ASSIGN(MultiWindowResizeController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_MULTI_WINDOW_RESIZE_CONTROLLER_H_
diff --git a/ash/wm/workspace/multi_window_resize_controller_unittest.cc b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
index 056e7d2..9ff1d7c 100644
--- a/ash/wm/workspace/multi_window_resize_controller_unittest.cc
+++ b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
@@ -19,7 +19,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 class MultiWindowResizeControllerTest : public test::AshTestBase {
  public:
@@ -254,5 +253,5 @@ TEST_F(MultiWindowResizeControllerTest, Three) {
   EXPECT_TRUE(IsShowing());
   generator.PressLeftButton();
 }
-}  // namespace internal
+
 }  // namespace ash
diff --git a/ash/wm/workspace/phantom_window_controller.cc b/ash/wm/workspace/phantom_window_controller.cc
index f56575b..ba95423 100644
--- a/ash/wm/workspace/phantom_window_controller.cc
+++ b/ash/wm/workspace/phantom_window_controller.cc
@@ -24,8 +24,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // The duration of the show animation.
@@ -289,5 +287,4 @@ scoped_ptr<views::Widget> PhantomWindowController::CreatePhantomWidget(
   return phantom_widget.Pass();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/phantom_window_controller.h b/ash/wm/workspace/phantom_window_controller.h
index fa87ef4..d62b135 100644
--- a/ash/wm/workspace/phantom_window_controller.h
+++ b/ash/wm/workspace/phantom_window_controller.h
@@ -19,7 +19,6 @@ class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // PhantomWindowController is responsible for showing a phantom representation
 // of a window. It's used to show a preview of how snapping or docking a window
@@ -81,7 +80,6 @@ class ASH_EXPORT PhantomWindowController {
   DISALLOW_COPY_AND_ASSIGN(PhantomWindowController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_PHANTOM_WINDOW_CONTROLLER_H_
diff --git a/ash/wm/workspace/phantom_window_controller_unittest.cc b/ash/wm/workspace/phantom_window_controller_unittest.cc
index 760db96..fa637d8 100644
--- a/ash/wm/workspace/phantom_window_controller_unittest.cc
+++ b/ash/wm/workspace/phantom_window_controller_unittest.cc
@@ -14,8 +14,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Returns true if |window| is non-NULL and is visible.
@@ -172,5 +170,4 @@ TEST_F(PhantomWindowControllerTest, OldCaptionButtonStyle) {
   EXPECT_FALSE(start_deletion_observer.IsWindowAlive());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/two_step_edge_cycler.cc b/ash/wm/workspace/two_step_edge_cycler.cc
index 76da2a1..3dd4437 100644
--- a/ash/wm/workspace/two_step_edge_cycler.cc
+++ b/ash/wm/workspace/two_step_edge_cycler.cc
@@ -7,8 +7,6 @@
 #include <cmath>
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // We cycle to the second mode if any of the following happens while the mouse
@@ -46,5 +44,4 @@ void TwoStepEdgeCycler::OnMove(const gfx::Point& location) {
   time_last_move_ = base::TimeTicks::Now();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/two_step_edge_cycler.h b/ash/wm/workspace/two_step_edge_cycler.h
index 007eda7..ffa1620 100644
--- a/ash/wm/workspace/two_step_edge_cycler.h
+++ b/ash/wm/workspace/two_step_edge_cycler.h
@@ -12,8 +12,6 @@
 
 namespace ash {
 
-namespace internal {
-
 // TwoStepEdgeCycler is responsible for cycling between two modes when the mouse
 // is at the edge of the workspace. The cycler does not loop so it is impossible
 // to get back to the first mode once the second mode is reached.
@@ -46,7 +44,6 @@ class ASH_EXPORT TwoStepEdgeCycler {
   DISALLOW_COPY_AND_ASSIGN(TwoStepEdgeCycler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_TWO_STEP_EDGE_CYCLER_H_
diff --git a/ash/wm/workspace/workspace_event_handler.cc b/ash/wm/workspace/workspace_event_handler.cc
index 65a8841..bfc8104 100644
--- a/ash/wm/workspace/workspace_event_handler.cc
+++ b/ash/wm/workspace/workspace_event_handler.cc
@@ -14,7 +14,6 @@
 #include "ui/base/hit_test.h"
 
 namespace ash {
-namespace internal {
 
 WorkspaceEventHandler::WorkspaceEventHandler() {
 }
@@ -109,5 +108,4 @@ void WorkspaceEventHandler::HandleVerticalResizeDoubleClick(
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/workspace_event_handler.h b/ash/wm/workspace/workspace_event_handler.h
index 65a05ac8..f949821 100644
--- a/ash/wm/workspace/workspace_event_handler.h
+++ b/ash/wm/workspace/workspace_event_handler.h
@@ -9,14 +9,12 @@
 #include "ui/events/event_handler.h"
 
 namespace ash {
+class WorkspaceEventHandlerTestHelper;
+
 namespace wm {
 class WindowState;
 }
 
-namespace internal {
-
-class WorkspaceEventHandlerTestHelper;
-
 class WorkspaceEventHandler : public ui::EventHandler {
  public:
   WorkspaceEventHandler();
@@ -41,7 +39,6 @@ class WorkspaceEventHandler : public ui::EventHandler {
   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_H_
diff --git a/ash/wm/workspace/workspace_event_handler_test_helper.cc b/ash/wm/workspace/workspace_event_handler_test_helper.cc
index 55b707b..485b102 100644
--- a/ash/wm/workspace/workspace_event_handler_test_helper.cc
+++ b/ash/wm/workspace/workspace_event_handler_test_helper.cc
@@ -5,7 +5,6 @@
 #include "ash/wm/workspace/workspace_event_handler_test_helper.h"
 
 namespace ash {
-namespace internal {
 
 WorkspaceEventHandlerTestHelper::WorkspaceEventHandlerTestHelper(
     WorkspaceEventHandler* handler)
@@ -15,5 +14,4 @@ WorkspaceEventHandlerTestHelper::WorkspaceEventHandlerTestHelper(
 WorkspaceEventHandlerTestHelper::~WorkspaceEventHandlerTestHelper() {
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/workspace_event_handler_test_helper.h b/ash/wm/workspace/workspace_event_handler_test_helper.h
index 21e1adb..3d0ec95 100644
--- a/ash/wm/workspace/workspace_event_handler_test_helper.h
+++ b/ash/wm/workspace/workspace_event_handler_test_helper.h
@@ -8,7 +8,6 @@
 #include "ash/wm/workspace/workspace_event_handler.h"
 
 namespace ash {
-namespace internal {
 
 class WorkspaceEventHandlerTestHelper {
  public:
@@ -25,7 +24,6 @@ class WorkspaceEventHandlerTestHelper {
   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandlerTestHelper);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_TEST_HELPER_H_
diff --git a/ash/wm/workspace/workspace_event_handler_unittest.cc b/ash/wm/workspace/workspace_event_handler_unittest.cc
index f02830a..fe9ec8c 100644
--- a/ash/wm/workspace/workspace_event_handler_unittest.cc
+++ b/ash/wm/workspace/workspace_event_handler_unittest.cc
@@ -28,7 +28,6 @@
 #endif
 
 namespace ash {
-namespace internal {
 
 class WorkspaceEventHandlerTest : public test::AshTestBase {
  public:
@@ -455,5 +454,4 @@ TEST_F(WorkspaceEventHandlerTest, DeleteWhileInRunLoop) {
                     aura::client::WINDOW_MOVE_SOURCE_MOUSE);
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/workspace_layout_manager.cc b/ash/wm/workspace/workspace_layout_manager.cc
index 1b4b4af..c817141 100644
--- a/ash/wm/workspace/workspace_layout_manager.cc
+++ b/ash/wm/workspace/workspace_layout_manager.cc
@@ -32,8 +32,6 @@ using aura::Window;
 
 namespace ash {
 
-namespace internal {
-
 WorkspaceLayoutManager::WorkspaceLayoutManager(aura::Window* window)
     : shelf_(NULL),
       window_(window),
@@ -57,7 +55,7 @@ WorkspaceLayoutManager::~WorkspaceLayoutManager() {
   Shell::GetInstance()->activation_client()->RemoveObserver(this);
 }
 
-void WorkspaceLayoutManager::SetShelf(internal::ShelfLayoutManager* shelf) {
+void WorkspaceLayoutManager::SetShelf(ShelfLayoutManager* shelf) {
   shelf_ = shelf;
 }
 
@@ -281,5 +279,4 @@ void WorkspaceLayoutManager::UpdateFullscreenState() {
   }
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/workspace_layout_manager.h b/ash/wm/workspace/workspace_layout_manager.h
index 970f5e4..296e5ad 100644
--- a/ash/wm/workspace/workspace_layout_manager.h
+++ b/ash/wm/workspace/workspace_layout_manager.h
@@ -29,16 +29,14 @@ class Layer;
 }
 
 namespace ash {
+class ShelfLayoutManager;
+class WorkspaceLayoutManagerDelegate;
+
 namespace wm {
 class WindowState;
 class WMEvent;
 }
 
-namespace internal {
-
-class ShelfLayoutManager;
-class WorkspaceLayoutManagerDelegate;
-
 // LayoutManager used on the window created for a workspace.
 class ASH_EXPORT WorkspaceLayoutManager
     : public aura::LayoutManager,
@@ -50,7 +48,7 @@ class ASH_EXPORT WorkspaceLayoutManager
   explicit WorkspaceLayoutManager(aura::Window* window);
   virtual ~WorkspaceLayoutManager();
 
-  void SetShelf(internal::ShelfLayoutManager* shelf);
+  void SetShelf(ShelfLayoutManager* shelf);
 
   // A delegate which can be set to add a backdrop behind the top most visible
   // window. With the call the ownership of the delegate will be transferred to
@@ -123,7 +121,7 @@ class ASH_EXPORT WorkspaceLayoutManager
   // Animates the window bounds to |bounds|.
   void SetChildBoundsAnimated(aura::Window* child, const gfx::Rect& bounds);
 
-  internal::ShelfLayoutManager* shelf_;
+  ShelfLayoutManager* shelf_;
   aura::Window* window_;
   aura::Window* root_window_;
 
@@ -143,7 +141,6 @@ class ASH_EXPORT WorkspaceLayoutManager
   DISALLOW_COPY_AND_ASSIGN(WorkspaceLayoutManager);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_
diff --git a/ash/wm/workspace/workspace_layout_manager_delegate.h b/ash/wm/workspace/workspace_layout_manager_delegate.h
index a32c028..4cd1710 100644
--- a/ash/wm/workspace/workspace_layout_manager_delegate.h
+++ b/ash/wm/workspace/workspace_layout_manager_delegate.h
@@ -16,8 +16,6 @@ namespace wm {
 class WindowState;
 }
 
-namespace internal {
-
 // A delegate which can be set to create and control a backdrop which gets
 // placed below the top level window.
 class WorkspaceLayoutManagerDelegate {
@@ -43,7 +41,6 @@ class WorkspaceLayoutManagerDelegate {
                                            wm::WindowStateType old_type) = 0;
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_DELEGATE_H_
diff --git a/ash/wm/workspace/workspace_layout_manager_unittest.cc b/ash/wm/workspace/workspace_layout_manager_unittest.cc
index 1765b09..4af3056 100644
--- a/ash/wm/workspace/workspace_layout_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_layout_manager_unittest.cc
@@ -371,8 +371,7 @@ TEST_F(WorkspaceLayoutManagerTest, MaximizeWithEmptySize) {
                                              NULL));
   wm::GetWindowState(window.get())->Maximize();
   aura::Window* default_container = Shell::GetContainer(
-      Shell::GetPrimaryRootWindow(),
-      internal::kShellWindowId_DefaultContainer);
+      Shell::GetPrimaryRootWindow(), kShellWindowId_DefaultContainer);
   default_container->AddChild(window.get());
   window->Show();
   gfx::Rect work_area(
@@ -518,10 +517,9 @@ class WorkspaceLayoutManagerSoloTest : public test::AshTestBase {
     test::AshTestBase::SetUp();
     UpdateDisplay("800x600");
     aura::Window* default_container = Shell::GetContainer(
-        Shell::GetPrimaryRootWindow(),
-        internal::kShellWindowId_DefaultContainer);
-    default_container->SetLayoutManager(new internal::WorkspaceLayoutManager(
-        Shell::GetPrimaryRootWindow()));
+        Shell::GetPrimaryRootWindow(), kShellWindowId_DefaultContainer);
+    default_container->SetLayoutManager(
+        new WorkspaceLayoutManager(Shell::GetPrimaryRootWindow()));
   }
 
   aura::Window* CreateTestWindow(const gfx::Rect& bounds) {
@@ -754,8 +752,7 @@ TEST_F(WorkspaceLayoutManagerSoloTest, NotResizeWhenScreenIsLocked) {
   window->SetProperty(aura::client::kAlwaysOnTopKey, true);
   window->Show();
 
-  internal::ShelfLayoutManager* shelf =
-      internal::ShelfLayoutManager::ForShelf(window.get());
+  ShelfLayoutManager* shelf = ShelfLayoutManager::ForShelf(window.get());
   shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
 
   window->SetBounds(ScreenUtil::GetMaximizedWindowBoundsInParent(window.get()));
@@ -787,9 +784,8 @@ class WorkspaceLayoutManagerBackdropTest : public test::AshTestBase {
   virtual void SetUp() OVERRIDE {
     test::AshTestBase::SetUp();
     UpdateDisplay("800x600");
-    default_container_ = Shell::GetContainer(
-        Shell::GetPrimaryRootWindow(),
-        internal::kShellWindowId_DefaultContainer);
+    default_container_ = Shell::GetContainer(Shell::GetPrimaryRootWindow(),
+                                             kShellWindowId_DefaultContainer);
     // We set the size to something smaller then the display to avoid resizing
     // issues with the shelf.
     default_container_->SetBounds(gfx::Rect(0, 0, 800, 500));
@@ -802,14 +798,12 @@ class WorkspaceLayoutManagerBackdropTest : public test::AshTestBase {
 
   // Turn the top window back drop on / off.
   void ShowTopWindowBackdrop(bool show) {
-    scoped_ptr<ash::internal::WorkspaceLayoutManagerDelegate> backdrop;
+    scoped_ptr<ash::WorkspaceLayoutManagerDelegate> backdrop;
     if (show) {
-      backdrop.reset(new ash::internal::WorkspaceBackdropDelegate(
-          default_container_));
+      backdrop.reset(new ash::WorkspaceBackdropDelegate(default_container_));
     }
-    (static_cast<internal::WorkspaceLayoutManager*>
-        (default_container_->layout_manager()))->SetMaximizeBackdropDelegate(
-            backdrop.Pass());
+    (static_cast<WorkspaceLayoutManager*>(default_container_->layout_manager()))
+        ->SetMaximizeBackdropDelegate(backdrop.Pass());
     // Closing and / or opening can be a delayed operation.
     base::MessageLoop::current()->RunUntilIdle();
   }
diff --git a/ash/wm/workspace/workspace_window_resizer.cc b/ash/wm/workspace/workspace_window_resizer.cc
index 6223de3..75fedaa 100644
--- a/ash/wm/workspace/workspace_window_resizer.cc
+++ b/ash/wm/workspace/workspace_window_resizer.cc
@@ -84,33 +84,27 @@ scoped_ptr<WindowResizer> CreateWindowResizer(
   window_state->CreateDragDetails(window, point_in_parent, window_component,
       source);
   if (window->parent() &&
-      (window->parent()->id() == internal::kShellWindowId_DefaultContainer ||
-       window->parent()->id() == internal::kShellWindowId_DockedContainer ||
-       window->parent()->id() == internal::kShellWindowId_PanelContainer)) {
-    window_resizer = internal::WorkspaceWindowResizer::Create(
-        window_state,
-        std::vector<aura::Window*>());
+      (window->parent()->id() == kShellWindowId_DefaultContainer ||
+       window->parent()->id() == kShellWindowId_DockedContainer ||
+       window->parent()->id() == kShellWindowId_PanelContainer)) {
+    window_resizer = WorkspaceWindowResizer::Create(
+        window_state, std::vector<aura::Window*>());
   } else {
     window_resizer = DefaultWindowResizer::Create(window_state);
   }
-  window_resizer = internal::DragWindowResizer::Create(window_resizer,
-                                                       window_state);
+  window_resizer = DragWindowResizer::Create(window_resizer, window_state);
   if (window->type() == ui::wm::WINDOW_TYPE_PANEL)
     window_resizer = PanelWindowResizer::Create(window_resizer, window_state);
-  if (switches::UseDockedWindows() &&
-      window_resizer && window->parent() &&
+  if (switches::UseDockedWindows() && window_resizer && window->parent() &&
       !::wm::GetTransientParent(window) &&
-      (window->parent()->id() == internal::kShellWindowId_DefaultContainer ||
-       window->parent()->id() == internal::kShellWindowId_DockedContainer ||
-       window->parent()->id() == internal::kShellWindowId_PanelContainer)) {
-    window_resizer = internal::DockedWindowResizer::Create(window_resizer,
-                                                           window_state);
+      (window->parent()->id() == kShellWindowId_DefaultContainer ||
+       window->parent()->id() == kShellWindowId_DockedContainer ||
+       window->parent()->id() == kShellWindowId_PanelContainer)) {
+    window_resizer = DockedWindowResizer::Create(window_resizer, window_state);
   }
   return make_scoped_ptr<WindowResizer>(window_resizer);
 }
 
-namespace internal {
-
 namespace {
 
 // Snapping distance used instead of WorkspaceWindowResizer::kScreenEdgeInset
@@ -1047,5 +1041,4 @@ bool WorkspaceWindowResizer::AreBoundsValidSnappedBounds(
   return bounds_in_parent == snapped_bounds;
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace/workspace_window_resizer.h b/ash/wm/workspace/workspace_window_resizer.h
index c16744a..d7d57d087 100644
--- a/ash/wm/workspace/workspace_window_resizer.h
+++ b/ash/wm/workspace/workspace_window_resizer.h
@@ -17,17 +17,15 @@
 #include "ui/aura/window_tracker.h"
 
 namespace ash {
-namespace wm {
-class WindowState;
-}
-
-namespace internal {
-
 class DockedWindowLayoutManager;
 class PhantomWindowController;
 class TwoStepEdgeCycler;
 class WindowSize;
 
+namespace wm {
+class WindowState;
+}
+
 // WindowResizer implementation for workspaces. This enforces that windows are
 // not allowed to vertically move or resize outside of the work area. As windows
 // are moved outside the work area they are shrunk. We remember the height of
@@ -222,7 +220,6 @@ class ASH_EXPORT WorkspaceWindowResizer : public WindowResizer {
   DISALLOW_COPY_AND_ASSIGN(WorkspaceWindowResizer);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WINDOW_RESIZER_H_
diff --git a/ash/wm/workspace/workspace_window_resizer_unittest.cc b/ash/wm/workspace/workspace_window_resizer_unittest.cc
index 1b1a027..791e843 100644
--- a/ash/wm/workspace/workspace_window_resizer_unittest.cc
+++ b/ash/wm/workspace/workspace_window_resizer_unittest.cc
@@ -32,7 +32,6 @@
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 const int kRootHeight = 600;
@@ -183,7 +182,7 @@ class WorkspaceWindowResizerTest : public test::AshTestBase {
     return std::vector<aura::Window*>();
   }
 
-  internal::ShelfLayoutManager* shelf_layout_manager() {
+  ShelfLayoutManager* shelf_layout_manager() {
     return Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
   }
 
@@ -1874,5 +1873,4 @@ TEST_F(WorkspaceWindowResizerTest, TouchResizeToEdge_BOTTOM) {
             touch_resize_window_->bounds().ToString());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace_controller.cc b/ash/wm/workspace_controller.cc
index 96735be..5d3ae6e 100644
--- a/ash/wm/workspace_controller.cc
+++ b/ash/wm/workspace_controller.cc
@@ -24,7 +24,6 @@
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
-namespace internal {
 namespace {
 
 // Amount of time to pause before animating anything. Only used during initial
@@ -70,10 +69,8 @@ WorkspaceWindowState WorkspaceController::GetWindowState() const {
 
   // These are the container ids of containers which may contain windows that
   // may overlap the launcher shelf and affect its transparency.
-  const int kWindowContainerIds[] = {
-      internal::kShellWindowId_DefaultContainer,
-      internal::kShellWindowId_DockedContainer,
-  };
+  const int kWindowContainerIds[] = {kShellWindowId_DefaultContainer,
+                                     kShellWindowId_DockedContainer, };
   const gfx::Rect shelf_bounds(shelf_->GetIdealBounds());
   bool window_overlaps_launcher = false;
   for (size_t idx = 0; idx < arraysize(kWindowContainerIds); idx++) {
@@ -141,5 +138,4 @@ void WorkspaceController::SetMaximizeBackdropDelegate(
   layout_manager_->SetMaximizeBackdropDelegate(delegate.Pass());
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace_controller.h b/ash/wm/workspace_controller.h
index 175ebe7..0529917 100644
--- a/ash/wm/workspace_controller.h
+++ b/ash/wm/workspace_controller.h
@@ -15,8 +15,6 @@ class Window;
 }
 
 namespace ash {
-namespace internal {
-
 class ShelfLayoutManager;
 class WorkspaceControllerTestHelper;
 class WorkspaceEventHandler;
@@ -48,14 +46,13 @@ class ASH_EXPORT WorkspaceController {
 
   aura::Window* viewport_;
 
-  internal::ShelfLayoutManager* shelf_;
-  scoped_ptr<internal::WorkspaceEventHandler> event_handler_;
-  internal::WorkspaceLayoutManager* layout_manager_;
+  ShelfLayoutManager* shelf_;
+  scoped_ptr<WorkspaceEventHandler> event_handler_;
+  WorkspaceLayoutManager* layout_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceController);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_CONTROLLER_H_
diff --git a/ash/wm/workspace_controller_test_helper.cc b/ash/wm/workspace_controller_test_helper.cc
index 5ecfa2f..9cab7b5 100644
--- a/ash/wm/workspace_controller_test_helper.cc
+++ b/ash/wm/workspace_controller_test_helper.cc
@@ -9,7 +9,6 @@
 #include "ui/aura/window.h"
 
 namespace ash {
-namespace internal {
 
 WorkspaceControllerTestHelper::WorkspaceControllerTestHelper(
     WorkspaceController* controller)
@@ -28,5 +27,4 @@ WorkspaceControllerTestHelper::GetMultiWindowResizeController() {
   return WorkspaceEventHandlerTestHelper(GetEventHandler()).resize_controller();
 }
 
-}  // namespace internal
 }  // namespace ash
diff --git a/ash/wm/workspace_controller_test_helper.h b/ash/wm/workspace_controller_test_helper.h
index ecdcccc..f020c35 100644
--- a/ash/wm/workspace_controller_test_helper.h
+++ b/ash/wm/workspace_controller_test_helper.h
@@ -8,8 +8,6 @@
 #include "ash/wm/workspace_controller.h"
 
 namespace ash {
-namespace internal {
-
 class MultiWindowResizeController;
 class WorkspaceEventHandler;
 
@@ -27,7 +25,6 @@ class WorkspaceControllerTestHelper {
   DISALLOW_COPY_AND_ASSIGN(WorkspaceControllerTestHelper);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_CONTROLLER_TEST_HELPER_H_
diff --git a/ash/wm/workspace_controller_unittest.cc b/ash/wm/workspace_controller_unittest.cc
index 106ba52..09d1c94 100644
--- a/ash/wm/workspace_controller_unittest.cc
+++ b/ash/wm/workspace_controller_unittest.cc
@@ -41,7 +41,6 @@
 using aura::Window;
 
 namespace ash {
-namespace internal {
 
 // Returns a string containing the names of all the children of |window| (in
 // order). Each entry is separated by a space.
@@ -128,11 +127,9 @@ class WorkspaceControllerTest : public test::AshTestBase {
     test::TestShelfDelegate* shelf_delegate =
         test::TestShelfDelegate::instance();
     shelf_delegate->AddShelfItem(window);
-    PanelLayoutManager* manager =
-        static_cast<PanelLayoutManager*>(
-            Shell::GetContainer(window->GetRootWindow(),
-                                internal::kShellWindowId_PanelContainer)->
-                                layout_manager());
+    PanelLayoutManager* manager = static_cast<PanelLayoutManager*>(
+        Shell::GetContainer(window->GetRootWindow(),
+                            kShellWindowId_PanelContainer)->layout_manager());
     manager->Relayout();
     return window;
   }
@@ -1469,7 +1466,7 @@ TEST_F(WorkspaceControllerTest, WindowEdgeHitTestDocked) {
       123, gfx::Rect(20, 10, 100, 50), NULL));
   ParentWindowInPrimaryRootWindow(window.get());
   aura::Window* docked_container = Shell::GetContainer(
-      window->GetRootWindow(), internal::kShellWindowId_DockedContainer);
+      window->GetRootWindow(), kShellWindowId_DockedContainer);
   docked_container->AddChild(window.get());
   window->Show();
   ui::EventTarget* root = window->GetRootWindow();
@@ -1508,5 +1505,4 @@ TEST_F(WorkspaceControllerTest, WindowEdgeHitTestDocked) {
   }
 }
 
-}  // namespace internal
 }  // namespace ash