Add a unified resource tracker shared between the proxy and the impl.

webkit/plugins/ppapi/ppb_layer_compositor_impl.h

 // Copyright (c) 2011 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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPB_LAYER_COMPOSITOR_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_LAYER_COMPOSITOR_IMPL_H_
 
 #include "ppapi/thunk/ppb_layer_compositor_api.h"
 #include "webkit/plugins/ppapi/resource.h"
 
 struct PP_Rect;
 struct PP_Size;
 
 namespace webkit {
 namespace ppapi {
 
 class PluginInstance;
 
 class PPB_LayerCompositor_Impl
     : public Resource,
       public ::ppapi::thunk::PPB_LayerCompositor_API {
  public:
   explicit PPB_LayerCompositor_Impl(PluginInstance* instance);
   virtual ~PPB_LayerCompositor_Impl();
 
   static const PPB_LayerCompositor_Dev* GetInterface();
 
-  // ResourceObjectBase override.
+  // Resource override.
   virtual PPB_LayerCompositor_API* AsPPB_LayerCompositor_API();
 
   // PPB_LayerCompositor_API implementation.
   virtual PP_Bool AddLayer(PP_Resource layer) OVERRIDE;
   virtual void RemoveLayer(PP_Resource layer) OVERRIDE;
   virtual void SetZIndex(PP_Resource layer, int32_t index) OVERRIDE;
   virtual void SetRect(PP_Resource layer, const PP_Rect* rect) OVERRIDE;
   virtual void SetDisplay(PP_Resource layer, PP_Bool is_displayed) OVERRIDE;
   virtual void MarkAsDirty(PP_Resource layer) OVERRIDE;
   virtual int32_t SwapBuffers(PP_CompletionCallback callback) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PPB_LayerCompositor_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_LAYER_COMPOSITOR_IMPL_H_