Fix sky include guards to match Chromium style

sky/engine/public/web/WebHitTestResult.h

 /*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebHitTestResult_h
-#define WebHitTestResult_h
+#ifndef SKY_ENGINE_PUBLIC_WEB_WEBHITTESTRESULT_H_
+#define SKY_ENGINE_PUBLIC_WEB_WEBHITTESTRESULT_H_
 
 #include "../platform/WebPrivatePtr.h"
 
 namespace blink {
 
 class HitTestResult;
 class WebElement;
 class WebHitTestResultPrivate;
 class WebNode;
 class WebURL;
@@ skipping 35 matching lines @@
     WebHitTestResult(const HitTestResult&);
     WebHitTestResult& operator=(const HitTestResult&);
 #endif
 
 protected:
     WebPrivatePtr<WebHitTestResultPrivate> m_private;
 };
 
 } // namespace blink
 
-#endif
+#endif  // SKY_ENGINE_PUBLIC_WEB_WEBHITTESTRESULT_H_