Support for drawing a debug border around animated layers

ui/compositor/compositor.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 "ui/compositor/compositor.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 254 matching lines @@
   settings.partial_swap_enabled =
       !command_line->HasSwitch(cc::switches::kUIDisablePartialSwap);
   settings.per_tile_painting_enabled =
       command_line->HasSwitch(cc::switches::kUIEnablePerTilePainting);
 
   // These flags should be mirrored by renderer versions in content/renderer/.
   settings.initial_debug_state.show_debug_borders =
       command_line->HasSwitch(cc::switches::kUIShowCompositedLayerBorders);
   settings.initial_debug_state.show_fps_counter =
       command_line->HasSwitch(cc::switches::kUIShowFPSCounter);
+  settings.initial_debug_state.show_layer_animation_bounds_rects =
+      command_line->HasSwitch(cc::switches::kUIShowLayerAnimationBounds);
   settings.initial_debug_state.show_paint_rects =
       command_line->HasSwitch(switches::kUIShowPaintRects);
   settings.initial_debug_state.show_property_changed_rects =
       command_line->HasSwitch(cc::switches::kUIShowPropertyChangedRects);
   settings.initial_debug_state.show_surface_damage_rects =
       command_line->HasSwitch(cc::switches::kUIShowSurfaceDamageRects);
   settings.initial_debug_state.show_screen_space_rects =
       command_line->HasSwitch(cc::switches::kUIShowScreenSpaceRects);
   settings.initial_debug_state.show_replica_screen_space_rects =
       command_line->HasSwitch(cc::switches::kUIShowReplicaScreenSpaceRects);
@@ skipping 338 matching lines @@
     // CompositorObservers to be notified before starting another
     // draw cycle.
     ScheduleDraw();
   }
   FOR_EACH_OBSERVER(CompositorObserver,
                     observer_list_,
                     OnCompositingEnded(this));
 }
 
 }  // namespace ui