Reserve Debug Shortcuts

- Processes debug shortcuts earlier in input cycle to prevent some views from blocking them.

BUG=157650

Review URL: https://chromiumcodereview.appspot.com/14845014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@200982 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 24 insertions, 1 deletions

diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 175c79d..677e8a4 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -400,8 +400,11 @@ void AcceleratorController::Init() {
   RegisterAccelerators(kDesktopAcceleratorData, kDesktopAcceleratorDataLength);
 #endif
 
-  if (DebugShortcutsEnabled())
+  if (DebugShortcutsEnabled()) {
     RegisterAccelerators(kDebugAcceleratorData, kDebugAcceleratorDataLength);
+    for (size_t i = 0; i < kReservedDebugActionsLength; ++i)
+      reserved_actions_.insert(kReservedDebugActions[i]);
+  }
 
 #if defined(OS_CHROMEOS)
   keyboard_brightness_control_delegate_.reset(
diff --git a/ash/accelerators/accelerator_table.cc b/ash/accelerators/accelerator_table.cc
index e60408e..835ac45 100644
--- a/ash/accelerators/accelerator_table.cc
+++ b/ash/accelerators/accelerator_table.cc
@@ -239,6 +239,18 @@ const AcceleratorAction kReservedActions[] = {
 
 const size_t kReservedActionsLength = arraysize(kReservedActions);
 
+const AcceleratorAction kReservedDebugActions[] = {
+  PRINT_LAYER_HIERARCHY,
+  PRINT_VIEW_HIERARCHY,
+  PRINT_WINDOW_HIERARCHY,
+  DEBUG_TOGGLE_DEVICE_SCALE_FACTOR,
+  DEBUG_TOGGLE_SHOW_DEBUG_BORDERS,
+  DEBUG_TOGGLE_SHOW_FPS_COUNTER,
+  DEBUG_TOGGLE_SHOW_PAINT_RECTS,
+};
+
+const size_t kReservedDebugActionsLength = arraysize(kReservedDebugActions);
+
 const AcceleratorAction kActionsAllowedAtLoginOrLockScreen[] = {
   BRIGHTNESS_DOWN,
   BRIGHTNESS_UP,
diff --git a/ash/accelerators/accelerator_table.h b/ash/accelerators/accelerator_table.h
index 7e5e456..563a7c5 100644
--- a/ash/accelerators/accelerator_table.h
+++ b/ash/accelerators/accelerator_table.h
@@ -142,6 +142,14 @@ ASH_EXPORT extern const AcceleratorAction kReservedActions[];
 // The number of elements in kReservedActions.
 ASH_EXPORT extern const size_t kReservedActionsLength;
 
+// Actions that should be handled very early in Ash unless the current target
+// window is full-screen, these actions are only handled if
+// DebugShortcutsEnabled is true (command line switch 'ash-debug-shortcuts').
+ASH_EXPORT extern const AcceleratorAction kReservedDebugActions[];
+
+// The number of elements in kReservedDebugActions.
+ASH_EXPORT extern const size_t kReservedDebugActionsLength;
+
 // Actions allowed while user is not signed in or screen is locked.
 ASH_EXPORT extern const AcceleratorAction kActionsAllowedAtLoginOrLockScreen[];