Timeline: add support for deferred canvas rasterization

Source/core/inspector/InspectorController.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 108 matching lines @@
 
     void reportMemoryUsage(MemoryObjectInfo*) const;
 
     void willProcessTask();
     void didProcessTask();
 
     void didBeginFrame();
     void didCancelFrame();
     void willComposite();
     void didComposite();
+    void willUpdateLayer(int layerId);
+    void didUpdateLayer();
 
     HashMap<String, size_t> processMemoryDistribution() const;
 
 private:
     InspectorController(Page*, InspectorClient*);
 
     friend class PostWorkerNotificationToFrontendTask;
     friend InstrumentingAgents* instrumentationForPage(Page*);
 
     RefPtr<InstrumentingAgents> m_instrumentingAgents;
@@ skipping 16 matching lines @@
     Page* m_page;
     InspectorClient* m_inspectorClient;
     InspectorAgentRegistry m_agents;
     bool m_isUnderTest;
 };
 
 }
 
 
 #endif // !defined(InspectorController_h)