sync compositor: Add output_surface_id

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 "cc/output/compositor_frame_ack.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/input/did_overscroll_params.h"
 #include "content/common/input/input_event_ack_state.h"
 #include "ipc/ipc_message_macros.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/gfx/geometry/scroll_offset.h"
 
 #ifndef CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
 #define CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
 
 namespace content {
 
 struct SyncCompositorCommonBrowserParams {
   SyncCompositorCommonBrowserParams();
   ~SyncCompositorCommonBrowserParams();
 
   uint32_t bytes_limit;
+  uint32_t output_surface_id;
   cc::CompositorFrameAck ack;
   gfx::ScrollOffset root_scroll_offset;
   bool update_root_scroll_offset;
   bool begin_frame_source_paused;
 };
 
 struct SyncCompositorDemandDrawHwParams {
   SyncCompositorDemandDrawHwParams();
   SyncCompositorDemandDrawHwParams(
       const gfx::Size& surface_size,
@@ skipping 50 matching lines @@
 #endif  // CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
 
 // Multiply-included message file, hence no include guard.
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 #define IPC_MESSAGE_START SyncCompositorMsgStart
 
 IPC_STRUCT_TRAITS_BEGIN(content::SyncCompositorCommonBrowserParams)
   IPC_STRUCT_TRAITS_MEMBER(bytes_limit)
+  IPC_STRUCT_TRAITS_MEMBER(output_surface_id)
   IPC_STRUCT_TRAITS_MEMBER(ack)
   IPC_STRUCT_TRAITS_MEMBER(root_scroll_offset)
   IPC_STRUCT_TRAITS_MEMBER(update_root_scroll_offset)
   IPC_STRUCT_TRAITS_MEMBER(begin_frame_source_paused)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::SyncCompositorDemandDrawHwParams)
   IPC_STRUCT_TRAITS_MEMBER(surface_size)
   IPC_STRUCT_TRAITS_MEMBER(transform)
   IPC_STRUCT_TRAITS_MEMBER(viewport)
@@ skipping 37 matching lines @@
 
 IPC_SYNC_MESSAGE_ROUTED2_1(SyncCompositorMsg_BeginFrame,
                            content::SyncCompositorCommonBrowserParams,
                            cc::BeginFrameArgs,
                            content::SyncCompositorCommonRendererParams)
 
 IPC_MESSAGE_ROUTED2(SyncCompositorMsg_ComputeScroll,
                     content::SyncCompositorCommonBrowserParams,
                     base::TimeTicks);
 
-IPC_SYNC_MESSAGE_ROUTED2_2(SyncCompositorMsg_DemandDrawHw,
+IPC_SYNC_MESSAGE_ROUTED2_3(SyncCompositorMsg_DemandDrawHw,
                            content::SyncCompositorCommonBrowserParams,
                            content::SyncCompositorDemandDrawHwParams,
                            content::SyncCompositorCommonRendererParams,
+                           uint32_t /* output_surface_id */,

[hush (inactive), 2016/03/08 23:55:49]

where is the renderer change that writes output surface id to the reply message?

[hush (inactive), 2016/03/08 23:56:56]

nevermind that. Just saw it.

                            cc::CompositorFrame)
 
 IPC_SYNC_MESSAGE_ROUTED2_2(SyncCompositorMsg_SetSharedMemory,
                            content::SyncCompositorCommonBrowserParams,
                            content::SyncCompositorSetSharedMemoryParams,
                            bool /* success */,
                            content::SyncCompositorCommonRendererParams);
 
 IPC_MESSAGE_ROUTED0(SyncCompositorMsg_ZeroSharedMemory);
 
 IPC_SYNC_MESSAGE_ROUTED2_3(SyncCompositorMsg_DemandDrawSw,
                            content::SyncCompositorCommonBrowserParams,
                            content::SyncCompositorDemandDrawSwParams,
                            bool /* result */,
                            content::SyncCompositorCommonRendererParams,
                            cc::CompositorFrame)
 
 IPC_MESSAGE_ROUTED1(SyncCompositorMsg_UpdateState,
                     content::SyncCompositorCommonBrowserParams)
 
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 IPC_MESSAGE_ROUTED1(SyncCompositorHostMsg_UpdateState,
                     content::SyncCompositorCommonRendererParams)
 
 IPC_MESSAGE_ROUTED2(SyncCompositorHostMsg_OverScroll,
                     content::SyncCompositorCommonRendererParams,
                     content::DidOverscrollParams)