Add MediaGpuChannelManager::LookupChannel().

content/renderer/media/renderer_gpu_video_accelerator_factories.h

 // Copyright 2013 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_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 #define CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 41 matching lines @@
           main_thread_task_runner,
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       const scoped_refptr<ui::ContextProviderCommandBuffer>& context_provider,
       bool enable_gpu_memory_buffer_video_frames,
       const cc::BufferToTextureTargetMap& image_texture_targets,
       bool enable_video_accelerator);
 
   // media::GpuVideoAcceleratorFactories implementation.
   bool IsGpuVideoAcceleratorEnabled() override;
   base::UnguessableToken GetChannelToken() override;
+  int32_t GetCommandBufferRouteId() override;
   std::unique_ptr<media::VideoDecodeAccelerator> CreateVideoDecodeAccelerator()
       override;
   std::unique_ptr<media::VideoEncodeAccelerator> CreateVideoEncodeAccelerator()
       override;
   // Creates textures and produces them into mailboxes. Returns true on success
   // or false on failure.
   bool CreateTextures(int32_t count,
                       const gfx::Size& size,
                       std::vector<uint32_t>* texture_ids,
                       std::vector<gpu::Mailbox>* texture_mailboxes,
@@ skipping 60 matching lines @@
 
   // For sending requests to allocate shared memory in the Browser process.
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererGpuVideoAcceleratorFactories);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_ACCELERATOR_FACTORIES_H_