Support for drawing a debug border around animated layers

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 917aba7c55ca827d8b35becbfeb5275e4422366b..06ab1b5e1b1d66d11433df718e905898a69b69f4 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -200,6 +200,8 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
       !cmd->HasSwitch(cc::switches::kDisableCompositedAntialiasing);
 
   // These flags should be mirrored by UI versions in ui/compositor/.
+  settings.initial_debug_state.show_layer_animation_bounds_rects =
+      cmd->HasSwitch(cc::switches::kShowLayerAnimationBounds);
   settings.initial_debug_state.show_debug_borders =
       cmd->HasSwitch(cc::switches::kShowCompositedLayerBorders);
   settings.initial_debug_state.show_fps_counter =