Fix sky include guards to match Chromium style

sky/engine/core/html/parser/TextResourceDecoder.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef TextResourceDecoder_h
-#define TextResourceDecoder_h
+#ifndef SKY_ENGINE_CORE_HTML_PARSER_TEXTRESOURCEDECODER_H_
+#define SKY_ENGINE_CORE_HTML_PARSER_TEXTRESOURCEDECODER_H_
 
 #include "sky/engine/wtf/RefCounted.h"
 #include "sky/engine/wtf/text/TextEncoding.h"
 
 namespace blink {
 
 class TextResourceDecoder {
 public:
     static PassOwnPtr<TextResourceDecoder> create()
     {
         return adoptPtr(new TextResourceDecoder());
     }
     ~TextResourceDecoder();
 
     const WTF::TextEncoding& encoding() const;
     String decode(const char* data, size_t length);
     String flush();
 
 private:
     TextResourceDecoder();
 
     bool m_sawError;
     OwnPtr<TextCodec> m_codec;
 };
 
 }
 
-#endif
+#endif  // SKY_ENGINE_CORE_HTML_PARSER_TEXTRESOURCEDECODER_H_