cc: Implement shared worker contexts.

content/common/gpu/client/command_buffer_proxy_impl.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_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 
 #include <map>
 #include <queue>
 #include <string>
@@ skipping 49 matching lines @@
   };
 
   typedef base::Callback<void(
       const std::string& msg, int id)> GpuConsoleMessageCallback;
 
   CommandBufferProxyImpl(GpuChannelHost* channel,
                          int32 route_id,
                          int32 stream_id);
   ~CommandBufferProxyImpl() override;
 
+  void Destroy();
+
   // Sends an IPC message to create a GpuVideoDecodeAccelerator. Creates and
   // returns it as an owned pointer to a media::VideoDecodeAccelerator.  Returns
   // NULL on failure to create the GpuVideoDecodeAcceleratorHost.
   // Note that the GpuVideoDecodeAccelerator may still fail to be created in
   // the GPU process, even if this returns non-NULL. In this case the VDA client
   // is notified of an error later, after Initialize().
   scoped_ptr<media::VideoDecodeAccelerator> CreateVideoDecoder();
 
   // Sends an IPC message to create a GpuVideoEncodeAccelerator. Creates and
   // returns it as an owned pointer to a media::VideoEncodeAccelerator.  Returns
@@ skipping 78 matching lines @@
   int32 route_id() const { return route_id_; }
 
   int32 stream_id() const { return stream_id_; }
 
   GpuChannelHost* channel() const { return channel_; }
 
   base::SharedMemoryHandle GetSharedStateHandle() const {
     return shared_state_shm_->handle();
   }
 
+  base::Lock* lock() { return lock_; }
+
  private:
   typedef std::map<int32, scoped_refptr<gpu::Buffer> > TransferBufferMap;
   typedef base::hash_map<uint32, base::Closure> SignalTaskMap;
 
   void CheckLock() {
     if (lock_)
       lock_->AssertAcquired();
   }
 
   // Send an IPC message over the GPU channel. This is private to fully
@@ skipping 55 matching lines @@
 
   SwapBuffersCompletionCallback swap_buffers_completion_callback_;
   UpdateVSyncParametersCallback update_vsync_parameters_completion_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferProxyImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_