RendererCompositorFrameSink should handle local surface id allocation

content/renderer/gpu/renderer_compositor_frame_sink.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_GPU_RENDERER_COMPOSITOR_FRAME_SINK_H_
 #define CONTENT_RENDERER_GPU_RENDERER_COMPOSITOR_FRAME_SINK_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/output/compositor_frame_sink.h"
 #include "cc/scheduler/begin_frame_source.h"
+#include "cc/surfaces/local_surface_id.h"
+#include "cc/surfaces/local_surface_id_allocator.h"
 #include "content/renderer/gpu/compositor_forwarding_message_filter.h"
 #include "ipc/ipc_sync_message_filter.h"
 
 namespace IPC {
 class Message;
 }
 
 namespace cc {
 class BeginFrameSource;
 class CompositorFrame;
@@ skipping 63 matching lines @@
 
   scoped_refptr<CompositorForwardingMessageFilter>
       compositor_frame_sink_filter_;
   CompositorForwardingMessageFilter::Handler
       compositor_frame_sink_filter_handler_;
   scoped_refptr<RendererCompositorFrameSinkProxy> compositor_frame_sink_proxy_;
   scoped_refptr<IPC::SyncMessageFilter> message_sender_;
   scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
   std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
   int routing_id_;
+
+  cc::LocalSurfaceId local_surface_id_;
+  cc::LocalSurfaceIdAllocator id_allocator_;
+  gfx::Size last_frame_size_;
+  float last_device_scale_factor_;
+
   base::ThreadChecker thread_checker_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_RENDERER_COMPOSITOR_FRAME_SINK_H_