ipc: Use a global for the process's attachment broker.

content/browser/gpu/browser_gpu_channel_host_factory.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_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
 #define CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 13 matching lines @@
   static BrowserGpuChannelHostFactory* instance() { return instance_; }
 
   // Overridden from GpuChannelHostFactory:
   bool IsMainThread() override;
   scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() override;
   scoped_ptr<base::SharedMemory> AllocateSharedMemory(size_t size) override;
   CreateCommandBufferResult CreateViewCommandBuffer(
       int32 surface_id,
       const GPUCreateCommandBufferConfig& init_params,
       int32 route_id) override;
-  IPC::AttachmentBroker* GetAttachmentBroker() override;
 
   int GpuProcessHostId() { return gpu_host_id_; }
 #if !defined(OS_ANDROID)
   GpuChannelHost* EstablishGpuChannelSync(
       CauseForGpuLaunch cause_for_gpu_launch);
 #endif
   void EstablishGpuChannel(CauseForGpuLaunch cause_for_gpu_launch,
                            const base::Closure& callback);
   GpuChannelHost* GetGpuChannel();
   int GetGpuChannelId() { return gpu_client_id_; }
@@ skipping 30 matching lines @@
   std::vector<base::Closure> established_callbacks_;
 
   static BrowserGpuChannelHostFactory* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuChannelHostFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_