Revert 200785 "Use the default theme as the fallback UI in Blink"

> Use the default theme as the fallback UI in Blink
> 
> Most native themes don't support zooming or styling required by Blink.
> This introduces a FallbackTheme that can be used in these situations.
> 
> Blink side change: https://codereview.chromium.org/14108007/
> 
> BUG=84973
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=200431
> 
> Review URL: https://chromiumcodereview.appspot.com/14424007

TBR=keishi@chromium.org

Review URL: https://codereview.chromium.org/15294003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@200791 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 173 insertions, 469 deletions

diff --git a/ui/native_theme/fallback_theme.cc b/ui/native_theme/fallback_theme.cc
deleted file mode 100644
index 8b5da75..0000000
--- a/ui/native_theme/fallback_theme.cc
+++ /dev/null
@@ -1,195 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/native_theme/fallback_theme.h"
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "ui/gfx/color_utils.h"
-#include "ui/gfx/skia_utils_gtk.h"
-#include "ui/native_theme/common_theme.h"
-
-namespace {
-
-const SkColor kMenuBackgroundColor = SK_ColorWHITE;
-
-// Theme colors returned by GetSystemColor().
-const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
-// Windows:
-const SkColor kWindowBackgroundColor = SK_ColorWHITE;
-// Dialogs:
-const SkColor kDialogBackgroundColor = SkColorSetRGB(251, 251, 251);
-// FocusableBorder:
-const SkColor kFocusedBorderColor = SkColorSetRGB(0x4D, 0x90, 0xFE);
-const SkColor kUnfocusedBorderColor = SkColorSetRGB(0xD9, 0xD9, 0xD9);
-// Button:
-const SkColor kButtonBackgroundColor = SkColorSetRGB(0xDE, 0xDE, 0xDE);
-const SkColor kButtonEnabledColor = SkColorSetRGB(0x22, 0x22, 0x22);
-const SkColor kButtonDisabledColor = SkColorSetRGB(0x99, 0x99, 0x99);
-const SkColor kButtonHighlightColor = SkColorSetRGB(0, 0, 0);
-const SkColor kButtonHoverColor = kButtonEnabledColor;
-// MenuItem:
-const SkColor kEnabledMenuItemForegroundColor = kButtonEnabledColor;
-const SkColor kDisabledMenuItemForegroundColor = kButtonDisabledColor;
-const SkColor kFocusedMenuItemBackgroundColor = SkColorSetRGB(0xF1, 0xF1, 0xF1);
-const SkColor kHoverMenuItemBackgroundColor =
-    SkColorSetARGB(204, 255, 255, 255);
-const SkColor kMenuSeparatorColor = SkColorSetRGB(0xED, 0xED, 0xED);
-const SkColor kEnabledMenuButtonBorderColor = SkColorSetARGB(36, 0, 0, 0);
-const SkColor kFocusedMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
-const SkColor kHoverMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
-// Label:
-const SkColor kLabelEnabledColor = kButtonEnabledColor;
-const SkColor kLabelDisabledColor = kButtonDisabledColor;
-const SkColor kLabelBackgroundColor = SK_ColorWHITE;
-// Textfield:
-const SkColor kTextfieldDefaultColor = SK_ColorBLACK;
-const SkColor kTextfieldDefaultBackground = SK_ColorWHITE;
-const SkColor kTextfieldReadOnlyColor = SK_ColorDKGRAY;
-const SkColor kTextfieldReadOnlyBackground = SK_ColorWHITE;
-const SkColor kTextfieldSelectionBackgroundFocused =
-    SkColorSetARGB(0x54, 0x60, 0xA8, 0xEB);
-const SkColor kTextfieldSelectionBackgroundUnfocused = SK_ColorLTGRAY;
-const SkColor kTextfieldSelectionColor =
-    color_utils::AlphaBlend(SK_ColorBLACK,
-        kTextfieldSelectionBackgroundFocused, 0xdd);
-// Tree
-const SkColor kTreeBackground = SK_ColorWHITE;
-const SkColor kTreeTextColor = SK_ColorBLACK;
-const SkColor kTreeSelectedTextColor = SK_ColorBLACK;
-const SkColor kTreeSelectionBackgroundColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
-const SkColor kTreeArrowColor = SkColorSetRGB(0x7A, 0x7A, 0x7A);
-// Table
-const SkColor kTableBackground = SK_ColorWHITE;
-const SkColor kTableTextColor = SK_ColorBLACK;
-const SkColor kTableSelectedTextColor = SK_ColorBLACK;
-const SkColor kTableSelectionBackgroundColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
-const SkColor kTableGroupingIndicatorColor = SkColorSetRGB(0xCC, 0xCC, 0xCC);
-
-}  // namespace
-
-namespace ui {
-
-FallbackTheme::FallbackTheme() {
-}
-
-FallbackTheme::~FallbackTheme() {
-}
-
-SkColor FallbackTheme::GetSystemColor(ColorId color_id) const {
-  // This implementation returns hardcoded colors.
-  SkColor color;
-  if (CommonThemeGetSystemColor(color_id, &color))
-    return color;
-
-  switch (color_id) {
-    // Windows
-    case kColorId_WindowBackground:
-      return kWindowBackgroundColor;
-
-    // Dialogs
-    case kColorId_DialogBackground:
-      return kDialogBackgroundColor;
-
-    // FocusableBorder
-    case kColorId_FocusedBorderColor:
-      return kFocusedBorderColor;
-    case kColorId_UnfocusedBorderColor:
-      return kUnfocusedBorderColor;
-
-    // Button
-    case kColorId_ButtonBackgroundColor:
-      return kButtonBackgroundColor;
-    case kColorId_ButtonEnabledColor:
-      return kButtonEnabledColor;
-    case kColorId_ButtonDisabledColor:
-      return kButtonDisabledColor;
-    case kColorId_ButtonHighlightColor:
-      return kButtonHighlightColor;
-    case kColorId_ButtonHoverColor:
-      return kButtonHoverColor;
-
-    // MenuItem
-    case kColorId_EnabledMenuItemForegroundColor:
-      return kEnabledMenuItemForegroundColor;
-    case kColorId_DisabledMenuItemForegroundColor:
-      return kDisabledMenuItemForegroundColor;
-    case kColorId_SelectedMenuItemForegroundColor:
-      return kEnabledMenuItemForegroundColor;
-    case kColorId_FocusedMenuItemBackgroundColor:
-      return kFocusedMenuItemBackgroundColor;
-    case kColorId_HoverMenuItemBackgroundColor:
-      return kHoverMenuItemBackgroundColor;
-    case kColorId_MenuSeparatorColor:
-      return kMenuSeparatorColor;
-    case kColorId_EnabledMenuButtonBorderColor:
-      return kEnabledMenuButtonBorderColor;
-    case kColorId_FocusedMenuButtonBorderColor:
-      return kFocusedMenuButtonBorderColor;
-    case kColorId_HoverMenuButtonBorderColor:
-      return kHoverMenuButtonBorderColor;
-
-    // Label
-    case kColorId_LabelEnabledColor:
-      return kLabelEnabledColor;
-    case kColorId_LabelDisabledColor:
-      return kLabelDisabledColor;
-    case kColorId_LabelBackgroundColor:
-      return kLabelBackgroundColor;
-
-    // Textfield
-    case kColorId_TextfieldDefaultColor:
-      return kTextfieldDefaultColor;
-    case kColorId_TextfieldDefaultBackground:
-      return kTextfieldDefaultBackground;
-    case kColorId_TextfieldReadOnlyColor:
-      return kTextfieldReadOnlyColor;
-    case kColorId_TextfieldReadOnlyBackground:
-      return kTextfieldReadOnlyBackground;
-    case kColorId_TextfieldSelectionColor:
-      return kTextfieldSelectionColor;
-    case kColorId_TextfieldSelectionBackgroundFocused:
-      return kTextfieldSelectionBackgroundFocused;
-    case kColorId_TextfieldSelectionBackgroundUnfocused:
-      return kTextfieldSelectionBackgroundUnfocused;
-
-    // Tree
-    case kColorId_TreeBackground:
-      return kTreeBackground;
-    case kColorId_TreeText:
-      return kTreeTextColor;
-    case kColorId_TreeSelectedText:
-    case kColorId_TreeSelectedTextUnfocused:
-      return kTreeSelectedTextColor;
-    case kColorId_TreeSelectionBackgroundFocused:
-    case kColorId_TreeSelectionBackgroundUnfocused:
-      return kTreeSelectionBackgroundColor;
-    case kColorId_TreeArrow:
-      return kTreeArrowColor;
-
-    // Table
-    case kColorId_TableBackground:
-      return kTableBackground;
-    case kColorId_TableText:
-      return kTableTextColor;
-    case kColorId_TableSelectedText:
-    case kColorId_TableSelectedTextUnfocused:
-      return kTableSelectedTextColor;
-    case kColorId_TableSelectionBackgroundFocused:
-    case kColorId_TableSelectionBackgroundUnfocused:
-      return kTableSelectionBackgroundColor;
-    case kColorId_TableGroupingIndicatorColor:
-      return kTableGroupingIndicatorColor;
-
-    case kColorId_MenuBackgroundColor:
-      return kMenuBackgroundColor;
-    case kColorId_MenuBorderColor:
-      NOTREACHED();
-      break;
-  }
-
-  return kInvalidColorIdColor;
-}
-
-}  // namespace ui
diff --git a/ui/native_theme/fallback_theme.h b/ui/native_theme/fallback_theme.h
deleted file mode 100644
index 2a69936..0000000
--- a/ui/native_theme/fallback_theme.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_NATIVE_THEME_FALLBACK_THEME_H_
-#define UI_NATIVE_THEME_FALLBACK_THEME_H_
-
-#include "ui/native_theme/native_theme_base.h"
-
-namespace ui {
-
-// This theme can draw UI controls on every platform. This is only used when
-// zooming a web page and the native theme doesn't support scaling.
-class NATIVE_THEME_EXPORT FallbackTheme : public NativeThemeBase {
- public:
-  FallbackTheme();
-  virtual ~FallbackTheme();
-
- private:
-  // Overridden from NativeThemeBase:
-  virtual SkColor GetSystemColor(ColorId color_id) const OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(FallbackTheme);
-};
-
-}  // namespace ui
-
-#endif  // UI_NATIVE_THEME_FALLBACK_THEME_H_
diff --git a/ui/native_theme/native_theme.gyp b/ui/native_theme/native_theme.gyp
index 671f286..70d27a3 100644
--- a/ui/native_theme/native_theme.gyp
+++ b/ui/native_theme/native_theme.gyp
@@ -23,8 +23,6 @@
       'sources': [
         'common_theme.cc',
         'common_theme.h',
-        'fallback_theme.cc',
-        'fallback_theme.h',
         'native_theme.cc',
         'native_theme.h',
         'native_theme_android.cc',
diff --git a/ui/native_theme/native_theme_aura.cc b/ui/native_theme/native_theme_aura.cc
index 6cbc255..8d7ae0b 100644
--- a/ui/native_theme/native_theme_aura.cc
+++ b/ui/native_theme/native_theme_aura.cc
@@ -19,6 +19,59 @@ namespace {
 
 const SkColor kMenuBackgroundColor = SK_ColorWHITE;
 
+// Theme colors returned by GetSystemColor().
+const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
+// Windows:
+const SkColor kWindowBackgroundColor = SK_ColorWHITE;
+// Dialogs:
+const SkColor kDialogBackgroundColor = SkColorSetRGB(251, 251, 251);
+// FocusableBorder:
+const SkColor kFocusedBorderColor = SkColorSetRGB(0x4D, 0x90, 0xFE);
+const SkColor kUnfocusedBorderColor = SkColorSetRGB(0xD9, 0xD9, 0xD9);
+// Button:
+const SkColor kButtonBackgroundColor = SkColorSetRGB(0xDE, 0xDE, 0xDE);
+const SkColor kButtonEnabledColor = SkColorSetRGB(0x22, 0x22, 0x22);
+const SkColor kButtonDisabledColor = SkColorSetRGB(0x99, 0x99, 0x99);
+const SkColor kButtonHighlightColor = SkColorSetRGB(0, 0, 0);
+const SkColor kButtonHoverColor = kButtonEnabledColor;
+// MenuItem:
+const SkColor kEnabledMenuItemForegroundColor = kButtonEnabledColor;
+const SkColor kDisabledMenuItemForegroundColor = kButtonDisabledColor;
+const SkColor kFocusedMenuItemBackgroundColor = SkColorSetRGB(0xF1, 0xF1, 0xF1);
+const SkColor kHoverMenuItemBackgroundColor =
+    SkColorSetARGB(204, 255, 255, 255);
+const SkColor kMenuSeparatorColor = SkColorSetRGB(0xED, 0xED, 0xED);
+const SkColor kEnabledMenuButtonBorderColor = SkColorSetARGB(36, 0, 0, 0);
+const SkColor kFocusedMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
+const SkColor kHoverMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
+// Label:
+const SkColor kLabelEnabledColor = kButtonEnabledColor;
+const SkColor kLabelDisabledColor = kButtonDisabledColor;
+const SkColor kLabelBackgroundColor = SK_ColorWHITE;
+// Textfield:
+const SkColor kTextfieldDefaultColor = SK_ColorBLACK;
+const SkColor kTextfieldDefaultBackground = SK_ColorWHITE;
+const SkColor kTextfieldReadOnlyColor = SK_ColorDKGRAY;
+const SkColor kTextfieldReadOnlyBackground = SK_ColorWHITE;
+const SkColor kTextfieldSelectionBackgroundFocused =
+    SkColorSetARGB(0x54, 0x60, 0xA8, 0xEB);
+const SkColor kTextfieldSelectionBackgroundUnfocused = SK_ColorLTGRAY;
+const SkColor kTextfieldSelectionColor =
+    color_utils::AlphaBlend(SK_ColorBLACK,
+        kTextfieldSelectionBackgroundFocused, 0xdd);
+// Tree
+const SkColor kTreeBackground = SK_ColorWHITE;
+const SkColor kTreeTextColor = SK_ColorBLACK;
+const SkColor kTreeSelectedTextColor = SK_ColorBLACK;
+const SkColor kTreeSelectionBackgroundColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
+const SkColor kTreeArrowColor = SkColorSetRGB(0x7A, 0x7A, 0x7A);
+// Table
+const SkColor kTableBackground = SK_ColorWHITE;
+const SkColor kTableTextColor = SK_ColorBLACK;
+const SkColor kTableSelectedTextColor = SK_ColorBLACK;
+const SkColor kTableSelectionBackgroundColor = SkColorSetRGB(0xEE, 0xEE, 0xEE);
+const SkColor kTableGroupingIndicatorColor = SkColorSetRGB(0xCC, 0xCC, 0xCC);
+
 }  // namespace
 
 namespace ui {
@@ -42,6 +95,121 @@ NativeThemeAura::NativeThemeAura() {
 NativeThemeAura::~NativeThemeAura() {
 }
 
+SkColor NativeThemeAura::GetSystemColor(ColorId color_id) const {
+  // This implementation returns hardcoded colors.
+  SkColor color;
+  if (CommonThemeGetSystemColor(color_id, &color))
+    return color;
+
+  switch (color_id) {
+    // Windows
+    case kColorId_WindowBackground:
+      return kWindowBackgroundColor;
+
+    // Dialogs
+    case kColorId_DialogBackground:
+      return kDialogBackgroundColor;
+
+    // FocusableBorder
+    case kColorId_FocusedBorderColor:
+      return kFocusedBorderColor;
+    case kColorId_UnfocusedBorderColor:
+      return kUnfocusedBorderColor;
+
+    // Button
+    case kColorId_ButtonBackgroundColor:
+      return kButtonBackgroundColor;
+    case kColorId_ButtonEnabledColor:
+      return kButtonEnabledColor;
+    case kColorId_ButtonDisabledColor:
+      return kButtonDisabledColor;
+    case kColorId_ButtonHighlightColor:
+      return kButtonHighlightColor;
+    case kColorId_ButtonHoverColor:
+      return kButtonHoverColor;
+
+    // MenuItem
+    case kColorId_EnabledMenuItemForegroundColor:
+      return kEnabledMenuItemForegroundColor;
+    case kColorId_DisabledMenuItemForegroundColor:
+      return kDisabledMenuItemForegroundColor;
+    case kColorId_SelectedMenuItemForegroundColor:
+      return kEnabledMenuItemForegroundColor;
+    case kColorId_FocusedMenuItemBackgroundColor:
+      return kFocusedMenuItemBackgroundColor;
+    case kColorId_HoverMenuItemBackgroundColor:
+      return kHoverMenuItemBackgroundColor;
+    case kColorId_MenuSeparatorColor:
+      return kMenuSeparatorColor;
+    case kColorId_EnabledMenuButtonBorderColor:
+      return kEnabledMenuButtonBorderColor;
+    case kColorId_FocusedMenuButtonBorderColor:
+      return kFocusedMenuButtonBorderColor;
+    case kColorId_HoverMenuButtonBorderColor:
+      return kHoverMenuButtonBorderColor;
+
+    // Label
+    case kColorId_LabelEnabledColor:
+      return kLabelEnabledColor;
+    case kColorId_LabelDisabledColor:
+      return kLabelDisabledColor;
+    case kColorId_LabelBackgroundColor:
+      return kLabelBackgroundColor;
+
+    // Textfield
+    case kColorId_TextfieldDefaultColor:
+      return kTextfieldDefaultColor;
+    case kColorId_TextfieldDefaultBackground:
+      return kTextfieldDefaultBackground;
+    case kColorId_TextfieldReadOnlyColor:
+      return kTextfieldReadOnlyColor;
+    case kColorId_TextfieldReadOnlyBackground:
+      return kTextfieldReadOnlyBackground;
+    case kColorId_TextfieldSelectionColor:
+      return kTextfieldSelectionColor;
+    case kColorId_TextfieldSelectionBackgroundFocused:
+      return kTextfieldSelectionBackgroundFocused;
+    case kColorId_TextfieldSelectionBackgroundUnfocused:
+      return kTextfieldSelectionBackgroundUnfocused;
+
+    // Tree
+    case kColorId_TreeBackground:
+      return kTreeBackground;
+    case kColorId_TreeText:
+      return kTreeTextColor;
+    case kColorId_TreeSelectedText:
+    case kColorId_TreeSelectedTextUnfocused:
+      return kTreeSelectedTextColor;
+    case kColorId_TreeSelectionBackgroundFocused:
+    case kColorId_TreeSelectionBackgroundUnfocused:
+      return kTreeSelectionBackgroundColor;
+    case kColorId_TreeArrow:
+      return kTreeArrowColor;
+
+    // Table
+    case kColorId_TableBackground:
+      return kTableBackground;
+    case kColorId_TableText:
+      return kTableTextColor;
+    case kColorId_TableSelectedText:
+    case kColorId_TableSelectedTextUnfocused:
+      return kTableSelectedTextColor;
+    case kColorId_TableSelectionBackgroundFocused:
+    case kColorId_TableSelectionBackgroundUnfocused:
+      return kTableSelectionBackgroundColor;
+    case kColorId_TableGroupingIndicatorColor:
+      return kTableGroupingIndicatorColor;
+
+    case kColorId_MenuBackgroundColor:
+      return kMenuBackgroundColor;
+    case kColorId_MenuBorderColor:
+      NOTREACHED();
+      break;
+  }
+
+  return kInvalidColorIdColor;
+}
+
 void NativeThemeAura::PaintMenuPopupBackground(
     SkCanvas* canvas,
     const gfx::Size& size,
diff --git a/ui/native_theme/native_theme_aura.h b/ui/native_theme/native_theme_aura.h
index b3417b3..51ebd38 100644
--- a/ui/native_theme/native_theme_aura.h
+++ b/ui/native_theme/native_theme_aura.h
@@ -7,12 +7,12 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "ui/native_theme/fallback_theme.h"
+#include "ui/native_theme/native_theme_base.h"
 
 namespace ui {
 
 // Aura implementation of native theme support.
-class NATIVE_THEME_EXPORT NativeThemeAura : public FallbackTheme {
+class NATIVE_THEME_EXPORT NativeThemeAura : public NativeThemeBase {
  public:
   static NativeThemeAura* instance();
 
@@ -21,6 +21,7 @@ class NATIVE_THEME_EXPORT NativeThemeAura : public FallbackTheme {
   virtual ~NativeThemeAura();
 
   // Overridden from NativeThemeBase:
+  virtual SkColor GetSystemColor(ColorId color_id) const OVERRIDE;
   virtual void PaintMenuPopupBackground(
       SkCanvas* canvas,
       const gfx::Size& size,
diff --git a/webkit/glue/webfallbackthemeengine_impl.cc b/webkit/glue/webfallbackthemeengine_impl.cc
deleted file mode 100644
index 213e3a7..0000000
--- a/webkit/glue/webfallbackthemeengine_impl.cc
+++ /dev/null
@@ -1,191 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "webkit/glue/webfallbackthemeengine_impl.h"
-
-#include "skia/ext/platform_canvas.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
-#include "ui/native_theme/fallback_theme.h"
-
-using WebKit::WebCanvas;
-using WebKit::WebColor;
-using WebKit::WebRect;
-using WebKit::WebFallbackThemeEngine;
-
-namespace webkit_glue {
-
-static ui::NativeTheme::Part NativeThemePart(
-    WebFallbackThemeEngine::Part part) {
-  switch (part) {
-    case WebFallbackThemeEngine::PartScrollbarDownArrow:
-      return ui::NativeTheme::kScrollbarDownArrow;
-    case WebFallbackThemeEngine::PartScrollbarLeftArrow:
-      return ui::NativeTheme::kScrollbarLeftArrow;
-    case WebFallbackThemeEngine::PartScrollbarRightArrow:
-      return ui::NativeTheme::kScrollbarRightArrow;
-    case WebFallbackThemeEngine::PartScrollbarUpArrow:
-      return ui::NativeTheme::kScrollbarUpArrow;
-    case WebFallbackThemeEngine::PartScrollbarHorizontalThumb:
-      return ui::NativeTheme::kScrollbarHorizontalThumb;
-    case WebFallbackThemeEngine::PartScrollbarVerticalThumb:
-      return ui::NativeTheme::kScrollbarVerticalThumb;
-    case WebFallbackThemeEngine::PartScrollbarHorizontalTrack:
-      return ui::NativeTheme::kScrollbarHorizontalTrack;
-    case WebFallbackThemeEngine::PartScrollbarVerticalTrack:
-      return ui::NativeTheme::kScrollbarVerticalTrack;
-    case WebFallbackThemeEngine::PartCheckbox:
-      return ui::NativeTheme::kCheckbox;
-    case WebFallbackThemeEngine::PartRadio:
-      return ui::NativeTheme::kRadio;
-    case WebFallbackThemeEngine::PartButton:
-      return ui::NativeTheme::kPushButton;
-    case WebFallbackThemeEngine::PartTextField:
-      return ui::NativeTheme::kTextField;
-    case WebFallbackThemeEngine::PartMenuList:
-      return ui::NativeTheme::kMenuList;
-    case WebFallbackThemeEngine::PartSliderTrack:
-      return ui::NativeTheme::kSliderTrack;
-    case WebFallbackThemeEngine::PartSliderThumb:
-      return ui::NativeTheme::kSliderThumb;
-    case WebFallbackThemeEngine::PartInnerSpinButton:
-      return ui::NativeTheme::kInnerSpinButton;
-    case WebFallbackThemeEngine::PartProgressBar:
-      return ui::NativeTheme::kProgressBar;
-    default:
-      return ui::NativeTheme::kScrollbarDownArrow;
-  }
-}
-
-static ui::NativeTheme::State NativeThemeState(
-    WebFallbackThemeEngine::State state) {
-  switch (state) {
-    case WebFallbackThemeEngine::StateDisabled:
-      return ui::NativeTheme::kDisabled;
-    case WebFallbackThemeEngine::StateHover:
-      return ui::NativeTheme::kHovered;
-    case WebFallbackThemeEngine::StateNormal:
-      return ui::NativeTheme::kNormal;
-    case WebFallbackThemeEngine::StatePressed:
-      return ui::NativeTheme::kPressed;
-    default:
-      return ui::NativeTheme::kDisabled;
-  }
-}
-
-static void GetNativeThemeExtraParams(
-    WebFallbackThemeEngine::Part part,
-    WebFallbackThemeEngine::State state,
-    const WebFallbackThemeEngine::ExtraParams* extra_params,
-    ui::NativeTheme::ExtraParams* native_theme_extra_params) {
-  switch (part) {
-    case WebFallbackThemeEngine::PartScrollbarHorizontalTrack:
-    case WebFallbackThemeEngine::PartScrollbarVerticalTrack:
-      native_theme_extra_params->scrollbar_track.track_x =
-          extra_params->scrollbarTrack.trackX;
-      native_theme_extra_params->scrollbar_track.track_y =
-          extra_params->scrollbarTrack.trackY;
-      native_theme_extra_params->scrollbar_track.track_width =
-          extra_params->scrollbarTrack.trackWidth;
-      native_theme_extra_params->scrollbar_track.track_height =
-          extra_params->scrollbarTrack.trackHeight;
-      break;
-    case WebFallbackThemeEngine::PartCheckbox:
-      native_theme_extra_params->button.checked = extra_params->button.checked;
-      native_theme_extra_params->button.indeterminate =
-          extra_params->button.indeterminate;
-      break;
-    case WebFallbackThemeEngine::PartRadio:
-      native_theme_extra_params->button.checked = extra_params->button.checked;
-      break;
-    case WebFallbackThemeEngine::PartButton:
-      native_theme_extra_params->button.is_default =
-          extra_params->button.isDefault;
-      native_theme_extra_params->button.has_border =
-          extra_params->button.hasBorder;
-      // Native buttons have a different focus style.
-      native_theme_extra_params->button.is_focused = false;
-      native_theme_extra_params->button.background_color =
-          extra_params->button.backgroundColor;
-      break;
-    case WebFallbackThemeEngine::PartTextField:
-      native_theme_extra_params->text_field.is_text_area =
-          extra_params->textField.isTextArea;
-      native_theme_extra_params->text_field.is_listbox =
-          extra_params->textField.isListbox;
-      native_theme_extra_params->text_field.background_color =
-          extra_params->textField.backgroundColor;
-      break;
-    case WebFallbackThemeEngine::PartMenuList:
-      native_theme_extra_params->menu_list.has_border =
-          extra_params->menuList.hasBorder;
-      native_theme_extra_params->menu_list.has_border_radius =
-          extra_params->menuList.hasBorderRadius;
-      native_theme_extra_params->menu_list.arrow_x =
-          extra_params->menuList.arrowX;
-      native_theme_extra_params->menu_list.arrow_y =
-          extra_params->menuList.arrowY;
-      native_theme_extra_params->menu_list.background_color =
-          extra_params->menuList.backgroundColor;
-      break;
-    case WebFallbackThemeEngine::PartSliderTrack:
-    case WebFallbackThemeEngine::PartSliderThumb:
-      native_theme_extra_params->slider.vertical =
-          extra_params->slider.vertical;
-      native_theme_extra_params->slider.in_drag = extra_params->slider.inDrag;
-      break;
-    case WebFallbackThemeEngine::PartInnerSpinButton:
-      native_theme_extra_params->inner_spin.spin_up =
-          extra_params->innerSpin.spinUp;
-      native_theme_extra_params->inner_spin.read_only =
-          extra_params->innerSpin.readOnly;
-      break;
-    case WebFallbackThemeEngine::PartProgressBar:
-      native_theme_extra_params->progress_bar.determinate =
-          extra_params->progressBar.determinate;
-      native_theme_extra_params->progress_bar.value_rect_x =
-          extra_params->progressBar.valueRectX;
-      native_theme_extra_params->progress_bar.value_rect_y =
-          extra_params->progressBar.valueRectY;
-      native_theme_extra_params->progress_bar.value_rect_width =
-          extra_params->progressBar.valueRectWidth;
-      native_theme_extra_params->progress_bar.value_rect_height =
-          extra_params->progressBar.valueRectHeight;
-      break;
-    default:
-      break;  // Parts that have no extra params get here.
-  }
-}
-
-WebFallbackThemeEngineImpl::WebFallbackThemeEngineImpl()
-    : theme_(new ui::FallbackTheme()) {
-}
-
-WebFallbackThemeEngineImpl::~WebFallbackThemeEngineImpl() {}
-
-WebKit::WebSize WebFallbackThemeEngineImpl::getSize(
-    WebFallbackThemeEngine::Part part) {
-  ui::NativeTheme::ExtraParams extra;
-  return theme_->GetPartSize(NativeThemePart(part),
-                             ui::NativeTheme::kNormal,
-                             extra);
-}
-
-void WebFallbackThemeEngineImpl::paint(
-    WebKit::WebCanvas* canvas,
-    WebFallbackThemeEngine::Part part,
-    WebFallbackThemeEngine::State state,
-    const WebKit::WebRect& rect,
-    const WebFallbackThemeEngine::ExtraParams* extra_params) {
-  ui::NativeTheme::ExtraParams native_theme_extra_params;
-  GetNativeThemeExtraParams(
-      part, state, extra_params, &native_theme_extra_params);
-  theme_->Paint(canvas,
-                NativeThemePart(part),
-                NativeThemeState(state),
-                gfx::Rect(rect),
-                native_theme_extra_params);
-}
-
-}  // namespace webkit_glue
diff --git a/webkit/glue/webfallbackthemeengine_impl.h b/webkit/glue/webfallbackthemeengine_impl.h
deleted file mode 100644
index 0887774..0000000
--- a/webkit/glue/webfallbackthemeengine_impl.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef WEBKIT_GLUE_WEBFALLBACKTHEMEENGINE_IMPL_H_
-#define WEBKIT_GLUE_WEBFALLBACKTHEMEENGINE_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebFallbackThemeEngine.h"
-
-namespace ui {
-class FallbackTheme;
-}
-
-namespace webkit_glue {
-
-class WebFallbackThemeEngineImpl : public WebKit::WebFallbackThemeEngine {
- public:
-  WebFallbackThemeEngineImpl();
-  virtual ~WebFallbackThemeEngineImpl();
-
-  // WebFallbackThemeEngine methods:
-  virtual WebKit::WebSize getSize(WebKit::WebFallbackThemeEngine::Part);
-  virtual void paint(
-      WebKit::WebCanvas* canvas,
-      WebKit::WebFallbackThemeEngine::Part part,
-      WebKit::WebFallbackThemeEngine::State state,
-      const WebKit::WebRect& rect,
-      const WebKit::WebFallbackThemeEngine::ExtraParams* extra_params);
-
- private:
-  scoped_ptr<ui::FallbackTheme> theme_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebFallbackThemeEngineImpl);
-};
-
-}  // namespace webkit_glue
-
-#endif  // WEBKIT_GLUE_WEBFALLBACKTHEMEENGINE_IMPL_H_
diff --git a/webkit/glue/webkit_glue.gypi b/webkit/glue/webkit_glue.gypi
index b4f8011..2a51635 100644
--- a/webkit/glue/webkit_glue.gypi
+++ b/webkit/glue/webkit_glue.gypi
@@ -228,8 +228,6 @@
         'webdropdata.cc',
         'webdropdata_win.cc',
         'webdropdata.h',
-        'webfallbackthemeengine_impl.cc',
-        'webfallbackthemeengine_impl.h',
         'webfileutilities_impl.cc',
         'webfileutilities_impl.h',
         'webkit_glue.cc',
diff --git a/webkit/glue/webkitplatformsupport_impl.cc b/webkit/glue/webkitplatformsupport_impl.cc
index af0ec80..00900a7 100644
--- a/webkit/glue/webkitplatformsupport_impl.cc
+++ b/webkit/glue/webkitplatformsupport_impl.cc
@@ -62,7 +62,6 @@
 using WebKit::WebAudioBus;
 using WebKit::WebCookie;
 using WebKit::WebData;
-using WebKit::WebFallbackThemeEngine;
 using WebKit::WebLocalizedString;
 using WebKit::WebPluginListBuilder;
 using WebKit::WebString;
@@ -384,11 +383,7 @@ void WebKitPlatformSupportImpl::SetFlingCurveParameters(
 }
 
 WebThemeEngine* WebKitPlatformSupportImpl::themeEngine() {
-  return &native_theme_engine_;
-}
-
-WebFallbackThemeEngine* WebKitPlatformSupportImpl::fallbackThemeEngine() {
-  return &fallback_theme_engine_;
+  return &theme_engine_;
 }
 
 WebURLLoader* WebKitPlatformSupportImpl::createURLLoader() {
diff --git a/webkit/glue/webkitplatformsupport_impl.h b/webkit/glue/webkitplatformsupport_impl.h
index e8c2b28..145f631 100644
--- a/webkit/glue/webkitplatformsupport_impl.h
+++ b/webkit/glue/webkitplatformsupport_impl.h
@@ -14,7 +14,6 @@
 #include "third_party/WebKit/Source/Platform/chromium/public/WebURLError.h"
 #include "ui/base/layout.h"
 #include "webkit/glue/resource_loader_bridge.h"
-#include "webkit/glue/webfallbackthemeengine_impl.h"
 #include "webkit/glue/webkit_glue_export.h"
 
 #if defined(USE_DEFAULT_RENDER_THEME)
@@ -58,7 +57,6 @@ class WEBKIT_GLUE_EXPORT WebKitPlatformSupportImpl :
 
   // Platform methods (partial implementation):
   virtual WebKit::WebThemeEngine* themeEngine();
-  virtual WebKit::WebFallbackThemeEngine* fallbackThemeEngine();
 
   virtual base::PlatformFile databaseOpenFile(
       const WebKit::WebString& vfs_file_name, int desired_flags);
@@ -188,8 +186,7 @@ class WEBKIT_GLUE_EXPORT WebKitPlatformSupportImpl :
   double shared_timer_fire_time_;
   bool shared_timer_fire_time_was_set_while_suspended_;
   int shared_timer_suspended_;  // counter
-  WebThemeEngineImpl native_theme_engine_;
-  WebFallbackThemeEngineImpl fallback_theme_engine_;
+  WebThemeEngineImpl theme_engine_;
   base::ThreadLocalStorage::Slot current_thread_slot_;
   scoped_ptr<FlingCurveConfiguration> fling_curve_configuration_;
 };