Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

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_
 
 #if defined(ENABLE_GPU)
 
 #include <map>
 #include <queue>
 #include <string>
 
 #include "gpu/ipc/command_buffer_proxy.h"
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/gpu/client/gpu_video_decode_accelerator_host.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/command_buffer_shared.h"
 #include "ipc/ipc_listener.h"
 
-class GpuChannelHost;
 struct GPUCommandBufferConsoleMessage;
-struct GpuMemoryAllocationForRenderer;
 
 namespace base {
 class SharedMemory;
 }
 
+namespace content {
+class GpuChannelHost;
+struct GpuMemoryAllocationForRenderer;
+
 // Client side proxy that forwards messages synchronously to a
 // CommandBufferStub.
 class CommandBufferProxyImpl
     : public CommandBufferProxy,
       public IPC::Listener,
       public base::SupportsWeakPtr<CommandBufferProxyImpl> {
  public:
   typedef base::Callback<void(
       const std::string& msg, int id)> GpuConsoleMessageCallback;
 
@@ skipping 118 matching lines @@
   // Tasks to be invoked in SignalSyncPoint responses.
   uint32 next_signal_id_;
   SignalTaskMap signal_tasks_;
 
   // ID of transfer buffer containing shared state.
   int32 state_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferProxyImpl);
 };
 
+}  // namespace content
+
 #endif  // ENABLE_GPU
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_