content: Improve thread priority for raster threads.

content/renderer/gpu/compositor_output_surface.h

Index: content/renderer/gpu/compositor_output_surface.h
diff --git a/content/renderer/gpu/compositor_output_surface.h b/content/renderer/gpu/compositor_output_surface.h
index cbbad42389cf4fc6f29ff33f9d813248520ab565..f407312b585b6df8ced12b150d1a433b72752f17 100644
--- a/content/renderer/gpu/compositor_output_surface.h
+++ b/content/renderer/gpu/compositor_output_surface.h
@@ -57,10 +57,6 @@ class CompositorOutputSurface
   void DetachFromClient() override;
   void SwapBuffers(cc::CompositorFrame* frame) override;
 
-  // TODO(epenner): This seems out of place here and would be a better fit
-  // int CompositorThread after it is fully refactored (http://crbug/170828)
-  void UpdateSmoothnessTakesPriority(bool prefer_smoothness) override;
-
  protected:
   void ShortcutSwapAck(uint32_t output_surface_id,
                        scoped_ptr<cc::GLFrameData> gl_frame_data);
@@ -104,10 +100,6 @@ class CompositorOutputSurface
   scoped_refptr<IPC::SyncMessageFilter> message_sender_;
   scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
   int routing_id_;
-#if defined(OS_ANDROID)
-  bool prefers_smoothness_;
-  scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner_;
-#endif
 
   // TODO(danakj): Remove this when crbug.com/311404
   bool layout_test_mode_;