Fix sky include guards to match Chromium style

sky/engine/wtf/text/IntegerToStringConversion.h

 /*
  * Copyright (C) 2012 Apple Inc. All Rights Reserved.
  * Copyright (C) 2012 Patrick Gansterer <paroga@paroga.com>
  *
  * 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 IntegerToStringConversion_h
-#define IntegerToStringConversion_h
+#ifndef SKY_ENGINE_WTF_TEXT_INTEGERTOSTRINGCONVERSION_H_
+#define SKY_ENGINE_WTF_TEXT_INTEGERTOSTRINGCONVERSION_H_
 
 #include "sky/engine/wtf/text/StringBuilder.h"
 #include "sky/engine/wtf/text/StringImpl.h"
 
 namespace WTF {
 
 enum PositiveOrNegativeNumber {
     PositiveNumber,
     NegativeNumber
 };
@@ skipping 55 matching lines @@
 }
 
 template<typename T, typename UnsignedIntegerType>
 inline typename ConversionTrait<T>::ReturnType numberToStringUnsigned(UnsignedIntegerType number, typename ConversionTrait<T>::AdditionalArgumentType* additionalArgument = 0)
 {
     return numberToStringImpl<T, UnsignedIntegerType, PositiveNumber>(number, additionalArgument);
 }
 
 } // namespace WTF
 
-#endif // IntegerToStringConversion_h
+#endif  // SKY_ENGINE_WTF_TEXT_INTEGERTOSTRINGCONVERSION_H_