Enable MQ evaluation off the main thread

Source/core/css/CSSParser.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 303 matching lines @@
     StyleRuleBase* createSupportsRule(bool conditionIsSupported, RuleList*);
     void markSupportsRuleHeaderStart();
     void markSupportsRuleHeaderEnd();
     PassRefPtr<CSSRuleSourceData> popSupportsRuleData();
     StyleRuleBase* createHostRule(RuleList* rules);
     StyleRuleBase* createFilterRule(const CSSParserString&);
 
     void startDeclarationsForMarginBox();
     void endDeclarationsForMarginBox();
 
-    MediaQueryExp* createFloatingMediaQueryExp(const AtomicString&, CSSParserValueList*);
+    MediaQueryExp* createFloatingMediaQueryExp(const String&, CSSParserValueList*);
     PassOwnPtr<MediaQueryExp> sinkFloatingMediaQueryExp(MediaQueryExp*);
     Vector<OwnPtr<MediaQueryExp> >* createFloatingMediaQueryExpList();
     PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > sinkFloatingMediaQueryExpList(Vector<OwnPtr<MediaQueryExp> >*);
     MediaQuery* createFloatingMediaQuery(MediaQuery::Restrictor, const String&, PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > >);
     MediaQuery* createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > >);
     MediaQuery* createFloatingNotAllQuery();
     PassOwnPtr<MediaQuery> sinkFloatingMediaQuery(MediaQuery*);
 
     Vector<RefPtr<StyleKeyframe> >* createFloatingKeyframeVector();
     PassOwnPtr<Vector<RefPtr<StyleKeyframe> > > sinkFloatingKeyframeVector(Vector<RefPtr<StyleKeyframe> >*);
@@ skipping 407 matching lines @@
 }
 
 inline int cssyylex(void* yylval, CSSParser* parser)
 {
     return parser->lex(yylval);
 }
 
 } // namespace WebCore
 
 #endif // CSSParser_h