cc: Fix header include guards of our header files.

cc/overdraw_metrics.h

 // Copyright 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 CCOverdrawMetrics_h
-#define CCOverdrawMetrics_h
+#ifndef CC_OVERDRAW_METRICS_H_
+#define CC_OVERDRAW_METRICS_H_
 
 #include "base/memory/scoped_ptr.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace WebKit {
 class WebTransformationMatrix;
 }
@@ skipping 73 matching lines @@
     // Count of pixels that are opaque (and thus occlude). Ideally this is no more than wiewport width x height.
     float m_pixelsDrawnOpaque;
     // Count of pixels that are possibly translucent, and cannot occlude.
     float m_pixelsDrawnTranslucent;
     // Count of pixels not drawn as they are occluded by somthing opaque.
     float m_pixelsCulledForDrawing;
 };
 
 } // namespace cc
 
-#endif
+#endif  // CC_OVERDRAW_METRICS_H_