Fix sky include guards to match Chromium style

sky/engine/wtf/HashIterators.h

 /*
  * Copyright (C) 2007 Apple 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 COMPUTER, 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 COMPUTER, 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
  * (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 WTF_HashIterators_h
-#define WTF_HashIterators_h
+#ifndef SKY_ENGINE_WTF_HASHITERATORS_H_
+#define SKY_ENGINE_WTF_HASHITERATORS_H_
 
 namespace WTF {
 
     template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstKeysIterator;
     template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstValuesIterator;
     template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableKeysIterator;
     template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableValuesIterator;
 
     template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyType, MappedType> > {
     private:
@@ skipping 170 matching lines @@
 
     template<typename T, typename U, typename V>
         inline bool operator!=(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)
     {
         return a.m_impl != b.m_impl;
     }
 
 
 } // namespace WTF
 
-#endif // WTF_HashIterators_h
+#endif  // SKY_ENGINE_WTF_HASHITERATORS_H_