base/threading: restrict to set only current thread priority

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 cb4bdba9b4bcbd45808f9ab010ca5dfe610534ac..369b874a36d0cfb2368a90e9376f1e11b908ec16 100644
--- a/content/renderer/gpu/compositor_output_surface.h
+++ b/content/renderer/gpu/compositor_output_surface.h
@@ -54,9 +54,11 @@ class CompositorOutputSurface
   bool BindToClient(cc::OutputSurfaceClient* client) override;
   void SwapBuffers(cc::CompositorFrame* frame) override;
 
+#if defined(OS_ANDROID)
   // 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;
+#endif
 
  protected:
   void ShortcutSwapAck(uint32 output_surface_id,
@@ -102,8 +104,10 @@ 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_;
-  base::PlatformThreadHandle main_thread_handle_;
+  scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner_;

[gab, 2015/06/23 17:01:32]

Please keep logic changes to another CL here as well.

[Ken Russell (switch to Gerrit), 2015/06/23 21:08:40]

I agree with gab's assessment.

[Takashi Toyoshima, 2015/06/24 04:15:39]

Done.

+#endif
 
   // TODO(danakj): Remove this when crbug.com/311404
   bool layout_test_mode_;