A thread safe CSS calc parser for sizes

Source/core/css/parser/MediaQueryParser.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 MediaQueryParser_h
 #define MediaQueryParser_h
 
 #include "core/css/CSSParserValues.h"
 #include "core/css/MediaList.h"
 #include "core/css/MediaQuery.h"
@@ skipping 28 matching lines @@
     inline bool currentMediaQueryChanged() const
     {
         return (m_restrictor != MediaQuery::None || m_mediaTypeSet || m_expressions->size() > 0);
     }
 
     inline void setRestrictor(MediaQuery::Restrictor restrictor) { m_restrictor = restrictor; }
 
     inline void setMediaFeature(const String& str) { m_mediaFeature = str; }
 };
 
-typedef Vector<MediaQueryToken> TokenList;
-typedef TokenList::iterator TokenIterator;
-
 class MediaQueryParser {
     STACK_ALLOCATED();
 public:
     static PassRefPtrWillBeRawPtr<MediaQuerySet> parseMediaQuerySet(const String&);
-    static PassRefPtrWillBeRawPtr<MediaQuerySet> parseMediaCondition(TokenIterator, TokenIterator endToken);
+    static PassRefPtrWillBeRawPtr<MediaQuerySet> parseMediaCondition(MediaQueryTokenIterator, MediaQueryTokenIterator endToken);
 
 private:
     enum ParserType {
         MediaQuerySetParser,
         MediaConditionParser,
     };
 
     MediaQueryParser(ParserType);
     virtual ~MediaQueryParser();
 
-    PassRefPtrWillBeRawPtr<MediaQuerySet> parseImpl(TokenIterator, TokenIterator endToken);
+    PassRefPtrWillBeRawPtr<MediaQuerySet> parseImpl(MediaQueryTokenIterator, MediaQueryTokenIterator endToken);
 
     void processToken(const MediaQueryToken&);
 
     void readRestrictor(MediaQueryTokenType, const MediaQueryToken&);
     void readMediaType(MediaQueryTokenType, const MediaQueryToken&);
     void readAnd(MediaQueryTokenType, const MediaQueryToken&);
     void readFeatureStart(MediaQueryTokenType, const MediaQueryToken&);
     void readFeature(MediaQueryTokenType, const MediaQueryToken&);
     void readFeatureColon(MediaQueryTokenType, const MediaQueryToken&);
     void readFeatureValue(MediaQueryTokenType, const MediaQueryToken&);
@@ skipping 23 matching lines @@
     const static State ReadFeatureEnd;
     const static State SkipUntilComma;
     const static State SkipUntilBlockEnd;
     const static State Done;
 
 };
 
 } // namespace WebCore
 
 #endif // MediaQueryParser_h