Fix sky include guards to match Chromium style

sky/engine/core/rendering/HitTestLocation.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
 */
 
-#ifndef HitTestLocation_h
-#define HitTestLocation_h
+#ifndef SKY_ENGINE_CORE_RENDERING_HITTESTLOCATION_H_
+#define SKY_ENGINE_CORE_RENDERING_HITTESTLOCATION_H_
 
 #include "sky/engine/platform/geometry/FloatQuad.h"
 #include "sky/engine/platform/geometry/FloatRect.h"
 #include "sky/engine/platform/geometry/LayoutRect.h"
 #include "sky/engine/platform/geometry/RoundedRect.h"
 #include "sky/engine/wtf/Forward.h"
 #include "sky/engine/wtf/ListHashSet.h"
 #include "sky/engine/wtf/OwnPtr.h"
 #include "sky/engine/wtf/RefPtr.h"
 
@@ skipping 46 matching lines @@
 
     FloatPoint m_transformedPoint;
     FloatQuad m_transformedRect;
 
     bool m_isRectBased;
     bool m_isRectilinear;
 };
 
 } // namespace blink
 
-#endif // HitTestLocation_h
+#endif  // SKY_ENGINE_CORE_RENDERING_HITTESTLOCATION_H_