Fix sky include guards to match Chromium style

sky/engine/core/css/parser/CSSParserMode.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 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
@@ skipping 10 matching lines @@
  * 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 CSSParserMode_h
-#define CSSParserMode_h
+#ifndef SKY_ENGINE_CORE_CSS_PARSER_CSSPARSERMODE_H_
+#define SKY_ENGINE_CORE_CSS_PARSER_CSSPARSERMODE_H_
 
 #include "sky/engine/platform/weborigin/KURL.h"
 #include "sky/engine/platform/weborigin/Referrer.h"
 
 namespace blink {
 
 class Document;
 
 enum CSSParserMode {
     HTMLStandardMode,
@@ skipping 60 matching lines @@
     KURL m_baseURL;
     Referrer m_referrer;
 
     UseCounter* m_useCounter;
 };
 
 const CSSParserContext& strictCSSParserContext();
 
 };
 
-#endif // CSSParserMode_h
+#endif  // SKY_ENGINE_CORE_CSS_PARSER_CSSPARSERMODE_H_