Fix sky include guards to match Chromium style

sky/engine/core/dom/DocumentLifecycleNotifier.h

 /*
  * Copyright (C) 2013 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 INC. ``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 INC. OR
  * 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
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-#ifndef DocumentLifecycleNotifier_h
-#define DocumentLifecycleNotifier_h
+#ifndef SKY_ENGINE_CORE_DOM_DOCUMENTLIFECYCLENOTIFIER_H_
+#define SKY_ENGINE_CORE_DOM_DOCUMENTLIFECYCLENOTIFIER_H_
 
 #include "sky/engine/core/dom/DocumentLifecycleObserver.h"
 #include "sky/engine/wtf/PassOwnPtr.h"
 #include "sky/engine/wtf/TemporaryChange.h"
 
 namespace blink {
 
 class Document;
 
 class DocumentLifecycleNotifier : public LifecycleNotifier<Document> {
@@ skipping 31 matching lines @@
 inline void DocumentLifecycleNotifier::notifyDocumentWasDisposed()
 {
     TemporaryChange<IterationType> scope(this->m_iterating, IteratingOverDocumentObservers);
     for (DocumentObserverSet::iterator i = m_documentObservers.begin(); i != m_documentObservers.end(); ++i)
         (*i)->documentWasDisposed();
 }
 #endif
 
 } // namespace blink
 
-#endif // DocumentLifecycleNotifier_h
+#endif  // SKY_ENGINE_CORE_DOM_DOCUMENTLIFECYCLENOTIFIER_H_