cc: Fix header include guards of our header files.

cc/layer_tree_host_common.h

 // Copyright 2011 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 CCLayerTreeHostCommon_h
-#define CCLayerTreeHostCommon_h
+#ifndef CC_LAYER_TREE_HOST_COMMON_H_
+#define CC_LAYER_TREE_HOST_COMMON_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/cc_export.h"
 #include "cc/scoped_ptr_vector.h"
 #include "ui/gfx/rect.h"
 #include "IntSize.h"
 #include <public/WebTransformationMatrix.h>
 
 namespace cc {
 
@@ skipping 69 matching lines @@
 
     for (size_t i = 0; i < rootLayer->children().size(); ++i) {
         if (LayerType* found = findLayerInSubtree(getChildAsRawPtr(rootLayer->children(), i), layerId))
             return found;
     }
     return 0;
 }
 
 }  // namespace cc
 
-#endif
+#endif  // CC_LAYER_TREE_HOST_COMMON_H_