Remove meta viewport and @viewport CSS rules.

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 195 matching lines @@
     void startEndUnknownRule();
 
     void endInvalidRuleHeader();
     void reportError(const CSSParserLocation&, CSSParserError = GeneralCSSError);
     void resumeErrorLogging() { m_ignoreErrors = false; }
     void setLocationLabel(const CSSParserLocation& location) { m_locationLabel = location; }
     const CSSParserLocation& lastLocationLabel() const { return m_locationLabel; }
 
     void tokenToLowerCase(CSSParserString& token);
 
-    void markViewportRuleBodyStart() { m_inViewport = true; }
-    void markViewportRuleBodyEnd() { m_inViewport = false; }
-    StyleRuleBase* createViewportRule();
-
     CSSParserLocation currentLocation() { return m_tokenizer.currentLocation(); }
 
 private:
-    class StyleDeclarationScope {
-        STACK_ALLOCATED();
-        WTF_MAKE_NONCOPYABLE(StyleDeclarationScope);
-    public:
-        StyleDeclarationScope(BisonCSSParser* parser, const StylePropertySet* declaration)
-            : m_parser(parser)
-            , m_mode(declaration->cssParserMode())
-        {
-            if (isCSSViewportParsingEnabledForMode(m_mode)) {
-                ASSERT(!m_parser->inViewport());
-                m_parser->markViewportRuleBodyStart();
-            }
-        }
-
-        ~StyleDeclarationScope()
-        {
-            if (isCSSViewportParsingEnabledForMode(m_mode))
-                m_parser->markViewportRuleBodyEnd();
-        }
-
-    private:
-        BisonCSSParser* m_parser;
-        CSSParserMode m_mode;
-    };
-
     inline void ensureLineEndings();
 
     void setStyleSheet(StyleSheetContents* styleSheet) { m_styleSheet = styleSheet; }
 
     bool inViewport() const { return m_inViewport; }
 
     void recheckAtKeyword(const UChar* str, int len);
 
     template<unsigned prefixLength, unsigned suffixLength>
     inline void setupParser(const char (&prefix)[prefixLength], const String& string, const char (&suffix)[suffixLength])
@@ skipping 54 matching lines @@
 inline int cssyylex(void* yylval, BisonCSSParser* parser)
 {
     return parser->m_tokenizer.lex(yylval);
 }
 
 bool isValidNthToken(const CSSParserString&);
 
 } // namespace blink
 
 #endif // BisonCSSParser_h