Fix sky include guards to match Chromium style

sky/engine/platform/fonts/Latin1TextIterator.h

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * 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 Latin1TextIterator_h
-#define Latin1TextIterator_h
+#ifndef SKY_ENGINE_PLATFORM_FONTS_LATIN1TEXTITERATOR_H_
+#define SKY_ENGINE_PLATFORM_FONTS_LATIN1TEXTITERATOR_H_
 
 #include "sky/engine/wtf/text/WTFString.h"
 
 namespace blink {
 
 class Latin1TextIterator {
 public:
     // The passed in LChar pointer starts at 'currentCharacter'. The iterator operates on the range [currentCharacter, lastCharacter].
     // 'endCharacter' denotes the maximum length of the UChar array, which might exceed 'lastCharacter'.
     Latin1TextIterator(const LChar* characters, int currentCharacter, int lastCharacter, int /*endCharacter*/)
@@ skipping 23 matching lines @@
     const LChar* characters() const { return m_characters; }
 
 private:
     const LChar* m_characters;
     int m_currentCharacter;
     int m_lastCharacter;
 };
 
 } // namespace blink
 
-#endif
+#endif  // SKY_ENGINE_PLATFORM_FONTS_LATIN1TEXTITERATOR_H_