OnDrawHardware() implementation with async messages

content/renderer/android/synchronous_compositor_proxy.cc

Index: content/renderer/android/synchronous_compositor_proxy.cc
diff --git a/content/renderer/android/synchronous_compositor_proxy.cc b/content/renderer/android/synchronous_compositor_proxy.cc
index 6b9883b5a21ed3f138cd8262698a8cc667603b2c..909369bb0c6802e3b92cd559c5096000debbf6f4 100644
--- a/content/renderer/android/synchronous_compositor_proxy.cc
+++ b/content/renderer/android/synchronous_compositor_proxy.cc
@@ -135,8 +135,10 @@ void SynchronousCompositorProxy::OnMessageReceived(
     IPC_MESSAGE_HANDLER(SyncCompositorMsg_SynchronizeRendererState,
                         PopulateCommonParams)
     IPC_MESSAGE_HANDLER(SyncCompositorMsg_ComputeScroll, OnComputeScroll)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(SyncCompositorMsg_DemandDrawHw,
-                                    DemandDrawHw)
+    //    IPC_MESSAGE_HANDLER_DELAY_REPLY(SyncCompositorMsg_DemandDrawHw,
+    //                                    DemandDrawHw)
+    IPC_MESSAGE_HANDLER(CompositorMsg_DemandDrawHw, DemandDrawhw)
+
     IPC_MESSAGE_HANDLER(SyncCompositorMsg_SetSharedMemory, SetSharedMemory)
     IPC_MESSAGE_HANDLER(SyncCompositorMsg_ZeroSharedMemory, ZeroSharedMemory)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(SyncCompositorMsg_DemandDrawSw,
@@ -169,7 +171,13 @@ void SynchronousCompositorProxy::DemandDrawHw(
 
   if (inside_receive_) {
     // Did not swap.
-    SendDemandDrawHwReply(cc::CompositorFrame(), 0u, reply_message);
+    //
+    /* Instead of sending the sync reply, send an async message. */
+    //    SendDemandDrawHwReply(cc::CompositorFrame(), 1u, reply_message);
+    SyncCompositorCommonRendererParams params;

[boliu, 2016/07/24 17:33:54]

this change should be done in SendDemandDrawHwReply

[ojars, 2016/07/28 22:53:55]

Done.

+    PolutateCommonParams(&params);
+    Send(new CompositorHostMessage_Frame(routing_id, params, output_surface_id,
+                                         frame));
     inside_receive_ = false;
   }
 }