Convert plugin and GPU process to brokered handle duplication.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 893 matching lines @@
         gpu_channel_->state() == GpuChannelHost::kConnected)
       return GetGpuChannel();
 
     // Recreate the channel if it has been lost.
     gpu_channel_ = NULL;
   }
 
   // Ask the browser for the channel name.
   int client_id = 0;
   IPC::ChannelHandle channel_handle;
-  base::ProcessHandle renderer_process_for_gpu;
   content::GPUInfo gpu_info;
   if (!Send(new GpuHostMsg_EstablishGpuChannel(cause_for_gpu_launch,
                                                &client_id,
                                                &channel_handle,
-                                               &renderer_process_for_gpu,
                                                &gpu_info)) ||
-      channel_handle.name.empty() ||
 #if defined(OS_POSIX)
       channel_handle.socket.fd == -1 ||
 #endif
-      renderer_process_for_gpu == base::kNullProcessHandle) {
+      channel_handle.name.empty()) {
     // Otherwise cancel the connection.
     gpu_channel_ = NULL;
     return NULL;
   }
 
   gpu_channel_ = new GpuChannelHost(this, 0, client_id);
   gpu_channel_->set_gpu_info(gpu_info);
   content::GetContentClient()->SetGpuInfo(gpu_info);
 
   // Connect to the GPU process if a channel name was received.
-  gpu_channel_->Connect(channel_handle, renderer_process_for_gpu);
+  gpu_channel_->Connect(channel_handle);
 
   return GetGpuChannel();
 }
 
 WebKit::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter(
     WebKit::WebMediaStreamCenterClient* client) {
 #if defined(ENABLE_WEBRTC)
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableMediaStream)) {
     return NULL;
@@ skipping 39 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }