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

content/common/gpu/gpu_messages.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.
 
 #include <vector>
 #include <string>
 
 
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
@@ skipping 146 matching lines @@
 // process. The browser will create the GPU process if necessary, and will
 // return a handle to the channel via a GpuChannelEstablished message.
 IPC_SYNC_MESSAGE_CONTROL1_3(GpuHostMsg_EstablishGpuChannel,
                             content::CauseForGpuLaunch,
                             IPC::ChannelHandle /* handle to channel */,
                             base::ProcessHandle /* renderer_process_for_gpu */,
                             GPUInfo /* stats about GPU process*/)
 
 // A renderer sends this to the browser process when it wants to
 // create a GL context associated with the given view_id.
-IPC_SYNC_MESSAGE_CONTROL3_1(GpuHostMsg_CreateViewCommandBuffer,
-                            gfx::PluginWindowHandle, /* view */
+IPC_SYNC_MESSAGE_CONTROL2_1(GpuHostMsg_CreateViewCommandBuffer,
                             int32, /* render_view_id */
                             GPUCreateCommandBufferConfig, /* init_params */
                             int32 /* route_id */)
 
 // Response from GPU to a GpuHostMsg_EstablishChannel message.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_ChannelEstablished,
                      IPC::ChannelHandle /* channel_handle */)
 
 // Respond from GPU to a GpuMsg_CreateViewCommandBuffer message.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_CommandBufferCreated,
@@ skipping 310 matching lines @@
 
 // Confirm decoder has been aborted.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_AbortDone)
 
 // Decoder has faced end of stream marker in the stream.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_EndOfStream)
 
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */