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 @@
 // Messages sent from the browser to the renderer.
 // Synchronous IPCs are allowed here to the renderer compositor thread. See
 // design doc https://goo.gl/Tn81FW and crbug.com/526842 for details.
 
 IPC_SYNC_MESSAGE_ROUTED0_1(SyncCompositorMsg_SynchronizeRendererState,
                            content::SyncCompositorCommonRendererParams)
 
 IPC_MESSAGE_ROUTED1(SyncCompositorMsg_ComputeScroll,
                     base::TimeTicks);
 
-IPC_SYNC_MESSAGE_ROUTED1_3(SyncCompositorMsg_DemandDrawHw,
-                           content::SyncCompositorDemandDrawHwParams,
-                           content::SyncCompositorCommonRendererParams,
-                           uint32_t /* output_surface_id */,
-                           cc::CompositorFrame)
+// IPC_SYNC_MESSAGE_ROUTED1_3(SyncCompositorMsg_DemandDrawHw,
+//                           content::SyncCompositorDemandDrawHwParams,
+//                           content::SyncCompositorCommonRendererParams,
+//                           uint32_t /* output_surface_id */,
+//                           cc::CompositorFrame)
+
+IPC_MESSAGE_ROUTED1(CompositorMsg_DemandDrawHw,
+                    content::SyncCompositorDemandDrawHwParams);
 
 IPC_SYNC_MESSAGE_ROUTED1_2(SyncCompositorMsg_SetSharedMemory,
                            content::SyncCompositorSetSharedMemoryParams,
                            bool /* success */,
                            content::SyncCompositorCommonRendererParams);
 
 IPC_MESSAGE_ROUTED0(SyncCompositorMsg_ZeroSharedMemory);
 
 IPC_SYNC_MESSAGE_ROUTED1_3(SyncCompositorMsg_DemandDrawSw,
                            content::SyncCompositorDemandDrawSwParams,
@@ skipping 15 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_ROUTED3(CompositorHostMsg_Frame,
+                    content::SyncCompositorCommonRendererParams,

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

Don't need this. CommonRendererParams are sent asynchronously already

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

Done.

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