Remove hasSyntacticallyValidCSSHeader.

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

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 - 2010  Torch Mobile (Beijing) Co. Ltd. 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.
@@ skipping 141 matching lines @@
     PassOwnPtr<MediaQuery> sinkFloatingMediaQuery(MediaQuery*);
 
     Vector<RefPtr<StyleKeyframe> >* createFloatingKeyframeVector();
     PassOwnPtr<Vector<RefPtr<StyleKeyframe> > > sinkFloatingKeyframeVector(Vector<RefPtr<StyleKeyframe> >*);
 
     CSSParserSelector* rewriteSpecifiersWithElementName(const AtomicString& namespacePrefix, const AtomicString& elementName, CSSParserSelector*, bool isNamespacePlaceholder = false);
     CSSParserSelector* rewriteSpecifiersWithNamespaceIfNeeded(CSSParserSelector*);
     CSSParserSelector* rewriteSpecifiers(CSSParserSelector*, CSSParserSelector*);
     CSSParserSelector* rewriteSpecifiersForShadowDistributed(CSSParserSelector* specifiers, CSSParserSelector* distributedPseudoElementSelector);
 
-    void invalidBlockHit();
+    void invalidBlockHit() { }
 
     Vector<OwnPtr<CSSParserSelector> >* reusableSelectorVector() { return &m_reusableSelectorVector; }
 
     void clearProperties();
 
     PassRefPtr<ImmutableStylePropertySet> createStylePropertySet();
 
     CSSParserContext m_context;
 
     bool m_important;
@@ skipping 104 matching lines @@
 inline int cssyylex(void* yylval, BisonCSSParser* parser)
 {
     return parser->m_tokenizer.lex(yylval);
 }
 
 bool isValidNthToken(const CSSParserString&);
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_CSS_PARSER_BISONCSSPARSER_H_