Fix sky include guards to match Chromium style

sky/engine/wtf/text/StringOperators.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 StringOperators_h
-#define StringOperators_h
+#ifndef SKY_ENGINE_WTF_TEXT_STRINGOPERATORS_H_
+#define SKY_ENGINE_WTF_TEXT_STRINGOPERATORS_H_
 
 namespace WTF {
 
 template<typename StringType1, typename StringType2>
 class StringAppend {
 public:
     StringAppend(StringType1 string1, StringType2 string2)
         : m_string1(string1)
         , m_string2(string2)
     {
@@ skipping 103 matching lines @@
 }
 
 template<typename U, typename V, typename W>
 StringAppend<StringAppend<U, V>, W> operator+(const StringAppend<U, V>& string1, W string2)
 {
     return StringAppend<StringAppend<U, V>, W>(string1, string2);
 }
 
 } // namespace WTF
 
-#endif // StringOperators_h
+#endif  // SKY_ENGINE_WTF_TEXT_STRINGOPERATORS_H_