ash: Prevent power button events from reaching apps.

ash/accelerators/accelerator_controller.cc

 // 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 "ash/accelerators/accelerator_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 
@@ skipping 667 matching lines @@
     case MAGNIFY_SCREEN_ZOOM_IN:
       return HandleMagnifyScreen(1);
     case MAGNIFY_SCREEN_ZOOM_OUT:
       return HandleMagnifyScreen(-1);
     case MEDIA_NEXT_TRACK:
       return HandleMediaNextTrack();
     case MEDIA_PLAY_PAUSE:
        return HandleMediaPlayPause();
     case MEDIA_PREV_TRACK:
        return HandleMediaPrevTrack();
+    case POWER_PRESSED:  // fallthrough
+    case POWER_RELEASED:
+       // We don't do anything with these at present, but we consume them to
+       // prevent them from getting passed to apps -- see
+       // http://crbug.com/146609.
+       return true;
 #if !defined(NDEBUG)
     case PRINT_LAYER_HIERARCHY:
       return HandlePrintLayerHierarchy();
     case PRINT_VIEW_HIERARCHY:
       return HandlePrintViewHierarchy();
     case PRINT_WINDOW_HIERARCHY:
       return HandlePrintWindowHierarchy();
 #endif
     default:
       NOTREACHED() << "Unhandled action " << action;
@@ skipping 75 matching lines @@
     accelerators_.insert(
         std::make_pair(accelerator, accelerators[i].action));
   }
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash