cc: Add strict layer property change checking and handle bounds changes during paint.

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 b434ea7e3405ff07ca4e9328d0351195736d8f88..fc2caddca62d0efa77e13539c7ec29cef241e7cb 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -265,6 +265,9 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
     }
   }
 
+  settings.strict_layer_property_change_checking =
+      cmd->HasSwitch(cc::switches::kStrictLayerPropertyChangeChecking);
+
 #if defined(OS_ANDROID)
   // TODO(danakj): Move these to the android code.
   settings.can_use_lcd_text = false;