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

content/common/gpu/media/gpu_video_decode_accelerator.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_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/shared_memory.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "media/video/video_decode_accelerator.h"
 
+namespace content {
+
 class GpuVideoDecodeAccelerator
     : public IPC::Listener,
       public IPC::Sender,
       public media::VideoDecodeAccelerator::Client,
       public GpuCommandBufferStub::DestructionObserver {
  public:
   // Each of the arguments to the constructor must outlive this object.
   // |stub->decoder()| will be made current around any operation that touches
   // the underlying VDA so that it can make GL calls safely.
   GpuVideoDecodeAccelerator(IPC::Sender* sender,
@@ skipping 59 matching lines @@
   // The underlying VideoDecodeAccelerator.
   scoped_ptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
 
   // Callback for making the relevant context current for GL calls.
   // Returns false if failed.
   base::Callback<bool(void)> make_context_current_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_