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

content/renderer/gpu/gpu_channel_host.cc

 // 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 "content/renderer/gpu/gpu_channel_host.h"
 
 #include "content/common/child_process.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/renderer/gpu/command_buffer_proxy.h"
 #include "content/renderer/gpu/gpu_surface_proxy.h"
@@ skipping 87 matching lines @@
   if (channel_.get())
     return channel_->Send(message);
 
   // Callee takes ownership of message, regardless of whether Send is
   // successful. See IPC::Message::Sender.
   delete message;
   return false;
 }
 
 CommandBufferProxy* GpuChannelHost::CreateViewCommandBuffer(
-    gfx::PluginWindowHandle compositing_surface,
     int render_view_id,
     const std::string& allowed_extensions,
     const std::vector<int32>& attribs,
     const GURL& active_url) {
 #if defined(ENABLE_GPU)
   // An error occurred. Need to get the host again to reinitialize it.
   if (!channel_.get())
     return NULL;
 
   GPUCreateCommandBufferConfig init_params;
   init_params.allowed_extensions = allowed_extensions;
   init_params.attribs = attribs;
   init_params.active_url = active_url;
   int32 route_id;
   if (!RenderThread::current()->Send(
       new GpuHostMsg_CreateViewCommandBuffer(
-          compositing_surface, render_view_id, init_params, &route_id))) {
+          render_view_id, init_params, &route_id))) {
     return NULL;
   }
 
   if (route_id == MSG_ROUTING_NONE)
     return NULL;
 
   CommandBufferProxy* command_buffer = new CommandBufferProxy(this, route_id);
   router_.AddRoute(route_id, command_buffer);
   proxies_[route_id] = command_buffer;
   return command_buffer;
@@ skipping 70 matching lines @@
 
 void GpuChannelHost::DestroySurface(GpuSurfaceProxy* surface) {
 #if defined(ENABLE_GPU)
   Send(new GpuChannelMsg_DestroySurface(surface->route_id()));
   if (router_.ResolveRoute(surface->route_id()))
     router_.RemoveRoute(surface->route_id());
 
   delete surface;
 #endif
 }