cc: Fix header include guards of our header files.

cc/layer_tree_host_impl.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 CCLayerTreeHostImpl_h
-#define CCLayerTreeHostImpl_h
+#ifndef CC_LAYER_TREE_HOST_IMPL_H_
+#define CC_LAYER_TREE_HOST_IMPL_H_
 
 #include "FloatPoint.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/cc_export.h"
 #include "cc/input_handler.h"
 #include "cc/layer_sorter.h"
 #include "cc/render_pass.h"
@@ skipping 336 matching lines @@
     scoped_ptr<DebugRectHistory> m_debugRectHistory;
 
     size_t m_numImplThreadScrolls;
     size_t m_numMainThreadScrolls;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
-#endif
+#endif  // CC_LAYER_TREE_HOST_IMPL_H_