cc: Fix header include guards of our header files.

cc/single_thread_proxy.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 CCSingleThreadProxy_h
-#define CCSingleThreadProxy_h
+#ifndef CC_SINGLE_THREAD_PROXY_H_
+#define CC_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/proxy.h"
 
 namespace cc {
 
@@ skipping 126 matching lines @@
         , m_mainThreadBlocked(proxy)
     {
     }
 private:
     DebugScopedSetImplThread m_implThread;
     DebugScopedSetMainThreadBlocked m_mainThreadBlocked;
 };
 
 } // namespace cc
 
-#endif
+#endif  // CC_SINGLE_THREAD_PROXY_H_