cc: Make separate interface for BeginFrame ipc from OutputSurface

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 5712c010fba30d4716cb4cadf02e514920759b13..b869b586f5b88cc42e96f66897933e03be131b1d 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -204,8 +204,8 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
     return main_thread_compositor_task_runner_;
   }
 
-  IPC::ForwardingMessageFilter* compositor_output_surface_filter() const {
-    return compositor_output_surface_filter_.get();
+  IPC::ForwardingMessageFilter* compositor_message_filter() const {
+    return compositor_message_filter_.get();
   }
 
   InputHandlerManager* input_handler_manager() const {
@@ -534,7 +534,7 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   // May be null if unused by the |input_handler_manager_|.
   scoped_refptr<InputEventFilter> input_event_filter_;
   scoped_ptr<InputHandlerManager> input_handler_manager_;
-  scoped_refptr<IPC::ForwardingMessageFilter> compositor_output_surface_filter_;
+  scoped_refptr<IPC::ForwardingMessageFilter> compositor_message_filter_;
 
   scoped_refptr<webkit::gpu::ContextProviderWebContext>
       shared_main_thread_contexts_;