Convert plugin and GPU process to brokered handle duplication.

content/browser/gpu/gpu_process_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #pragma once
 
 #include <map>
 #include <queue>
@@ skipping 23 matching lines @@
                        public IPC::Message::Sender,
                        public base::NonThreadSafe {
  public:
   enum GpuProcessKind {
     GPU_PROCESS_KIND_UNSANDBOXED,
     GPU_PROCESS_KIND_SANDBOXED,
     GPU_PROCESS_KIND_COUNT
   };
 
   typedef base::Callback<void(const IPC::ChannelHandle&,
-                              base::ProcessHandle,
                               const content::GPUInfo&)>
       EstablishChannelCallback;
 
   typedef base::Callback<void(int32)> CreateCommandBufferCallback;
 
   static bool gpu_enabled() { return gpu_enabled_; }
 
   // Creates a new GpuProcessHost or gets an existing one, resulting in the
   // launching of a GPU process if required.  Returns null on failure. It
   // is not safe to store the pointer once control has returned to the message
@@ skipping 103 matching lines @@
   // Multimap is used to simulate reference counting, see comment in
   // GpuProcessHostUIShim::CreateViewCommandBuffer.
   class SurfaceRef;
   typedef std::multimap<int, linked_ptr<SurfaceRef> > SurfaceRefMap;
   SurfaceRefMap surface_refs_;
 #endif
 
   // Qeueud messages to send when the process launches.
   std::queue<IPC::Message*> queued_messages_;
 
-  // The handle for the GPU process or null if it is not known to be launched.
-  base::ProcessHandle gpu_process_;
-
   // Whether we are running a GPU thread inside the browser process instead
   // of a separate GPU process.
   bool in_process_;
 
   bool software_rendering_;
   GpuProcessKind kind_;
 
   scoped_ptr<GpuMainThread> in_process_gpu_thread_;
 
   // Whether we actually launched a GPU process.
   bool process_launched_;
 
   // Time Init started.  Used to log total GPU process startup time to UMA.
   base::TimeTicks init_start_time_;
 
   // Master switch for enabling/disabling GPU acceleration for the current
   // browser session. It does not change the acceleration settings for
   // existing tabs, just the future ones.
   static bool gpu_enabled_;
 
   static bool hardware_gpu_enabled_;
 
   scoped_ptr<BrowserChildProcessHostImpl> process_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_