OnDrawHardware() implementation with async messages

content/common/android/sync_compositor_messages.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include "base/memory/shared_memory_handle.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/output/compositor_frame.h"
 #include "content/common/content_export.h"
@@ skipping 107 matching lines @@
 // design doc https://goo.gl/Tn81FW and crbug.com/526842 for details.
 
 IPC_SYNC_MESSAGE_CONTROL1_1(
     SyncCompositorMsg_SynchronizeRendererState,
     std::vector<int> /* routing ids*/,
     std::vector<content::SyncCompositorCommonRendererParams>)
 
 IPC_MESSAGE_ROUTED1(SyncCompositorMsg_ComputeScroll,
                     base::TimeTicks);
 
+IPC_MESSAGE_ROUTED1(CompositorMsg_DemandDrawHw,

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

Use the same naming pattern, so SyncCompositorMsg_DemandDrawHwAsync or something
like that

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

Done.

+                    content::SyncCompositorDemandDrawHwParams)
+
 IPC_SYNC_MESSAGE_ROUTED1_3(SyncCompositorMsg_DemandDrawHw,
                            content::SyncCompositorDemandDrawHwParams,
                            content::SyncCompositorCommonRendererParams,
                            uint32_t /* output_surface_id */,
                            cc::CompositorFrame)
 
 IPC_SYNC_MESSAGE_ROUTED1_2(SyncCompositorMsg_SetSharedMemory,
                            content::SyncCompositorSetSharedMemoryParams,
                            bool /* success */,
                            content::SyncCompositorCommonRendererParams);
@@ skipping 20 matching lines @@
 
 IPC_MESSAGE_ROUTED1(SyncCompositorMsg_SetScroll, gfx::ScrollOffset);
 
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 IPC_MESSAGE_ROUTED0(SyncCompositorHostMsg_OutputSurfaceCreated);
 
 IPC_MESSAGE_ROUTED1(SyncCompositorHostMsg_UpdateState,
                     content::SyncCompositorCommonRendererParams)
+
+IPC_MESSAGE_ROUTED2(CompositorHostMsg_Frame,

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

SyncCompositorHostMsg_ReturnFrame?

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

Done.

+                    uint32_t /* output_surface_id */,
+                    cc::CompositorFrame);