Fix sky include guards to match Chromium style

sky/engine/core/page/EventWithHitTestResults.h

 /*
    Copyright (C) 2000 Simon Hausmann <hausmann@kde.org>
    Copyright (C) 2006 Apple Computer, Inc.
 
    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 EventWithHitTestResults_h
-#define EventWithHitTestResults_h
+#ifndef SKY_ENGINE_CORE_PAGE_EVENTWITHHITTESTRESULTS_H_
+#define SKY_ENGINE_CORE_PAGE_EVENTWITHHITTESTRESULTS_H_
 
 #include "sky/engine/core/rendering/HitTestResult.h"
 #include "sky/engine/platform/PlatformEvent.h"
 #include "sky/engine/platform/PlatformGestureEvent.h"
 #include "sky/engine/platform/PlatformMouseEvent.h"
 
 namespace blink {
 
 class Scrollbar;
 
@@ skipping 20 matching lines @@
     EventType m_event;
     HitTestResult m_hitTestResult;
 };
 
 typedef EventWithHitTestResults<PlatformMouseEvent> MouseEventWithHitTestResults;
 
 typedef EventWithHitTestResults<PlatformGestureEvent> GestureEventWithHitTestResults;
 
 } // namespace blink
 
-#endif // EventWithHitTestResults_h
+#endif  // SKY_ENGINE_CORE_PAGE_EVENTWITHHITTESTRESULTS_H_