Implement GpuArcVideoService::AcceleratorStub using mojo

content/common/gpu/media/gpu_arc_video_service.h

 // Copyright 2016 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_COMMON_GPU_MEDIA_GPU_ARC_VIDEO_SERVICE_H_
 #define CONTENT_COMMON_GPU_MEDIA_GPU_ARC_VIDEO_SERVICE_H_
 
 #include <map>
 
 #include "base/callback.h"
 #include "base/threading/thread_checker.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 class WaitableEvent;
 }
 
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace content {
+namespace arc {
 
 // GpuArcVideoService manages life-cycle and IPC message translation for
 // ArcVideoAccelerator.
 //
 // For each creation request from GpuChannelManager, GpuArcVideoService will
 // create a new IPC channel.
 class GpuArcVideoService {
  public:
   class AcceleratorStub;
   using CreateChannelCallback = base::Callback<void(const IPC::ChannelHandle&)>;
@@ skipping 23 matching lines @@
 
   // GPU io thread task runner.
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // Bookkeeping all accelerator stubs.
   std::map<AcceleratorStub*, scoped_ptr<AcceleratorStub>> accelerator_stubs_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuArcVideoService);
 };
 
+}  // namespace arc
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_GPU_ARC_VIDEO_SERVICE_H_