GPU compositing surface handle is no longer sent to renderer process.

content/renderer/gpu/gpu_channel_host.h

 // Copyright (c) 2011 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_GPU_CHANNEL_HOST_H_
 #define CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 50 matching lines @@
   // IPC::Channel::Listener implementation:
   virtual bool OnMessageReceived(const IPC::Message& msg);
   virtual void OnChannelConnected(int32 peer_pid);
   virtual void OnChannelError();
 
   // IPC::Message::Sender implementation:
   virtual bool Send(IPC::Message* msg);
 
   // Create and connect to a command buffer in the GPU process.
   CommandBufferProxy* CreateViewCommandBuffer(
-      gfx::PluginWindowHandle compositing_surface,
       int render_view_id,
       const std::string& allowed_extensions,
       const std::vector<int32>& attribs,
       const GURL& active_url);
 
   // Create and connect to a command buffer in the GPU process.
   CommandBufferProxy* CreateOffscreenCommandBuffer(
       CommandBufferProxy* parent,
       const gfx::Size& size,
       const std::string& allowed_extensions,
@@ skipping 39 matching lines @@
   scoped_refptr<GpuVideoServiceHost> gpu_video_service_host_;
 
   // This is a MessageFilter to intercept IPC messages related to transport
   // textures. These messages are routed to TransportTextureHost.
   scoped_refptr<TransportTextureService> transport_texture_service_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
 };
 
 #endif  // CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_