OnDrawHardware() implementation with async messages

content/renderer/android/synchronous_compositor_proxy.h

Index: content/renderer/android/synchronous_compositor_proxy.h
diff --git a/content/renderer/android/synchronous_compositor_proxy.h b/content/renderer/android/synchronous_compositor_proxy.h
index 07d3d702c8c3e1f0e28a4be41c50ce7dcd4d0db7..6092a7c32a9cc91e02db293fcbbc614ee28d0670 100644
--- a/content/renderer/android/synchronous_compositor_proxy.h
+++ b/content/renderer/android/synchronous_compositor_proxy.h
@@ -73,6 +73,7 @@ class SynchronousCompositorProxy
 
   // IPC handlers.
   void OnComputeScroll(base::TimeTicks animation_time);
+  void DemandDrawHw_Async(const SyncCompositorDemandDrawHwParams& params);

[boliu, 2016/08/11 19:23:40]

drop the underscore on all these new methods

[ojars, 2016/08/23 02:15:42]

Done.

   void DemandDrawHw(const SyncCompositorDemandDrawHwParams& params,
                     IPC::Message* reply_message);
   void SetSharedMemory(
@@ -88,10 +89,14 @@ class SynchronousCompositorProxy
       SyncCompositorCommonRendererParams* common_renderer_params);
   void SetScroll(const gfx::ScrollOffset& total_scroll_offset);
 
+  void SwapBuffersHw_Async(uint32_t output_surface_id,
+                           cc::CompositorFrame frame);
   void SwapBuffersHw(uint32_t output_surface_id, cc::CompositorFrame frame);
   void SendDemandDrawHwReply(cc::CompositorFrame frame,
                              uint32_t output_surface_id,
                              IPC::Message* reply_message);
+  void SendDemandDrawHwReply_Async(cc::CompositorFrame frame,
+                                   uint32_t output_surface_id);
   void DoDemandDrawSw(const SyncCompositorDemandDrawSwParams& params);
   void SwapBuffersSw(cc::CompositorFrame frame);
   void SendDemandDrawSwReply(bool success,
@@ -107,6 +112,7 @@ class SynchronousCompositorProxy
   bool inside_receive_;
   IPC::Message* hardware_draw_reply_;
   IPC::Message* software_draw_reply_;
+  bool hardware_draw_reply_async_;
 
   // From browser.
   std::unique_ptr<SharedMemoryWithSize> software_draw_shm_;