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

content/renderer/media/renderer_gpu_video_decoder_factories.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_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
 #define CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "media/filters/gpu_video_decoder.h"
 #include "ui/gfx/size.h"
 
-class ContentGLContext;
-class GpuChannelHost;
-class WebGraphicsContext3DCommandBufferImpl;
 namespace base {
 class WaitableEvent;
 }
 
 namespace content {
+class GpuChannelHost;
+class WebGraphicsContext3DCommandBufferImpl;
 
 // Glue code to expose functionality needed by media::GpuVideoDecoder to
 // RenderViewImpl.  This class is entirely an implementation detail of
 // RenderViewImpl and only has its own header to allow extraction of its
 // implementation from render_view_impl.cc which is already far too large.
 //
 // The public methods of the class can be called from any thread, and are
 // internally trampolined to the appropriate thread.  GPU/GL-related calls go to
 // the constructor-argument loop (mostly that's the compositor thread, or the
 // renderer thread if threaded compositing is disabled), and shmem-related calls
@@ skipping 55 matching lines @@
 
   scoped_refptr<base::MessageLoopProxy> message_loop_;
   scoped_refptr<GpuChannelHost> gpu_channel_host_;
   base::WeakPtr<WebGraphicsContext3DCommandBufferImpl> context_;
   DISALLOW_IMPLICIT_CONSTRUCTORS(RendererGpuVideoDecoderFactories);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_