Have CSSParserContext take a Document reference in argument

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 105 matching lines @@
     bool hasProperties() const { return !m_parsedProperties.isEmpty(); }
     void addExpandedPropertyForValue(CSSPropertyID propId, PassRefPtr<CSSValue>, bool);
     void setCurrentProperty(CSSPropertyID);
 
     bool parseValue(CSSPropertyID, bool important);
     bool parseShorthand(CSSPropertyID, const StylePropertyShorthand&, bool important);
     bool parse4Values(CSSPropertyID, const CSSPropertyID* properties, bool important);
     bool parseContent(CSSPropertyID, bool important);
     bool parseQuotes(CSSPropertyID, bool important);
 
-    static bool parseValue(MutableStylePropertySet*, CSSPropertyID, const String&, bool important, Document*);
+    static bool parseValue(MutableStylePropertySet*, CSSPropertyID, const String&, bool important, const Document&);
     void storeVariableDeclaration(const CSSParserString&, PassOwnPtr<CSSParserValueList>, bool important);
 
     PassRefPtr<CSSValue> parseAttr(CSSParserValueList* args);
 
     PassRefPtr<CSSValue> parseBackgroundColor();
 
     bool parseFillImage(CSSParserValueList*, RefPtr<CSSValue>&);
 
     enum FillPositionFlag { InvalidFillPosition = 0, AmbiguousFillPosition = 1, XFillPosition = 2, YFillPosition = 4 };
     enum FillPositionParsingMode { ResolveValuesAsPercent = 0, ResolveValuesAsKeyword = 1 };
@@ skipping 624 matching lines @@
 }
 
 inline int cssyylex(void* yylval, CSSParser* parser)
 {
     return parser->lex(yylval);
 }
 
 } // namespace WebCore
 
 #endif // CSSParser_h