cc: Fix header include guards of our header files.

cc/video_layer.h

 // Copyright 2010 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 VideoLayerChromium_h
-#define VideoLayerChromium_h
+#ifndef CC_VIDEO_LAYER_H_
+#define CC_VIDEO_LAYER_H_
 
 #include "base/callback.h"
 #include "cc/cc_export.h"
 #include "cc/layer.h"
 
 namespace WebKit {
 class WebVideoFrame;
 class WebVideoFrameProvider;
 }
 
@@ skipping 19 matching lines @@
     VideoLayer(WebKit::WebVideoFrameProvider*, const FrameUnwrapper&);
     virtual ~VideoLayer();
 
     // This pointer is only for passing to VideoLayerImpl's constructor. It should never be dereferenced by this class.
     WebKit::WebVideoFrameProvider* m_provider;
     FrameUnwrapper m_unwrapper;
 };
 
 }  // namespace cc
 
-#endif
+#endif  // CC_VIDEO_LAYER_H_