Implement 'will-change' parsing

Source/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 264 matching lines @@
     bool parseLineBoxContain(bool important);
     bool parseCalculation(CSSParserValue*, ValueRange);
 
     bool parseFontFeatureTag(CSSValueList*);
     bool parseFontFeatureSettings(bool important);
 
     bool parseFontVariantLigatures(bool important);
 
     bool parseGeneratedImage(CSSParserValueList*, RefPtr<CSSValue>&);
 
+    bool parseWillChange(bool important);
+
     CSSParserSelector* createFloatingSelector();
     CSSParserSelector* createFloatingSelectorWithTagName(const QualifiedName&);
     PassOwnPtr<CSSParserSelector> sinkFloatingSelector(CSSParserSelector*);
 
     Vector<OwnPtr<CSSParserSelector> >* createFloatingSelectorVector();
     PassOwnPtr<Vector<OwnPtr<CSSParserSelector> > > sinkFloatingSelectorVector(Vector<OwnPtr<CSSParserSelector> >*);
 
     CSSParserValueList* createFloatingValueList();
     PassOwnPtr<CSSParserValueList> sinkFloatingValueList(CSSParserValueList*);
 
@@ skipping 322 matching lines @@
 bool isValidNthToken(const CSSParserString&);
 
 inline int cssyylex(void* yylval, BisonCSSParser* parser)
 {
     return parser->m_tokenizer.lex(yylval);
 }
 
 } // namespace WebCore
 
 #endif // BisonCSSParser_h