WIP: Propagate SurfaceID up window tree hierarchy

content/browser/renderer_host/delegated_frame_host.h

 // Copyright 2014 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_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 133 matching lines @@
                                   const SkColorType preferred_color_type);
   void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(const gfx::Rect&, bool)>& callback);
   bool CanCopyToVideoFrame() const;
   void BeginFrameSubscription(
       std::unique_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
   void EndFrameSubscription();
   bool HasFrameSubscriber() const { return !!frame_subscriber_; }
-  uint32_t GetSurfaceClientId();
+  cc::FrameSinkId GetFrameSinkId();
   // Returns a null SurfaceId if this DelegatedFrameHost has not yet created
   // a compositor Surface.
   cc::SurfaceId SurfaceIdAtPoint(cc::SurfaceHittestDelegate* delegate,
                                  const gfx::Point& point,
                                  gfx::Point* transformed_point);
 
   // Given the SurfaceID of a Surface that is contained within this class'
   // Surface, find the relative transform between the Surfaces and apply it
   // to a point. If a Surface has not yet been created this returns the
   // same point with no transform applied.
@@ skipping 163 matching lines @@
   // YUV readback pipeline.
   std::unique_ptr<display_compositor::ReadbackYUVInterface>
       yuv_readback_pipeline_;
 
   std::unique_ptr<DelegatedFrameEvictor> delegated_frame_evictor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_