compositor-worker: Refactor CompositorWorkerManager

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 ad108dcd50f2bd88b6b0850b3a13494dcfa24f03..f2292f5f34ffe4a3c4dd63290ddde481c8a71fb7 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -72,6 +72,7 @@ class GpuVideoAcceleratorFactories;
 
 namespace scheduler {
 class RendererScheduler;
+class WebThreadBase;
 }
 
 namespace v8 {
@@ -464,6 +465,8 @@ class CONTENT_EXPORT RenderThreadImpl
 
   void Init();
 
+  void InitializeCompositorThread();
+
   void OnCreateNewFrame(FrameMsg_NewFrame_Params params);
   void OnCreateNewFrameProxy(int routing_id,
                              int render_view_routing_id,
@@ -588,7 +591,7 @@ class CONTENT_EXPORT RenderThreadImpl
   scoped_ptr<base::Thread> file_thread_;
 
   // May be null if overridden by ContentRendererClient.
-  scoped_ptr<base::Thread> compositor_thread_;
+  scoped_ptr<scheduler::WebThreadBase> compositor_thread_;
 
   // Utility class to provide GPU functionalities to media.
   scoped_ptr<content::RendererGpuVideoAcceleratorFactories> gpu_factories_;