[WIP] cc: Plumb SurfaceId from clients

content/renderer/gpu/render_widget_compositor.h

 // Copyright (c) 2013 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_RENDER_WIDGET_COMPOSITOR_H_
 #define CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 79 matching lines @@
   int GetSourceFrameNumber() const;
   void SetNeedsUpdateLayers();
   void SetNeedsCommit();
   void NotifyInputThrottledUntilCommit();
   const cc::Layer* GetRootLayer() const;
   int ScheduleMicroBenchmark(
       const std::string& name,
       std::unique_ptr<base::Value> value,
       const base::Callback<void(std::unique_ptr<base::Value>)>& callback);
   bool SendMessageToMicroBenchmark(int id, std::unique_ptr<base::Value> value);
+  uint32_t GetSurfaceClientId() const;
   void SetSurfaceClientId(uint32_t surface_id_namespace);
   void OnHandleCompositorProto(const std::vector<uint8_t>& proto);
   void SetPaintedDeviceScaleFactor(float device_scale);
 
   // WebLayerTreeView implementation.
   void setRootLayer(const blink::WebLayer& layer) override;
   void clearRootLayer() override;
   void attachCompositorAnimationTimeline(
       cc::AnimationTimeline* compositor_timeline) override;
   void detachCompositorAnimationTimeline(
@@ skipping 112 matching lines @@
   std::unique_ptr<cc::CopyOutputRequest> temporary_copy_output_request_;
 
   cc::RemoteProtoChannel::ProtoReceiver* remote_proto_channel_receiver_;
 
   base::WeakPtrFactory<RenderWidgetCompositor> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_