Remove dead methods from CSSStyleSheet and StyleSheetContents.

sky/engine/core/css/StyleSheetContents.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 35 matching lines @@
     static PassRefPtr<StyleSheetContents> create(const CSSParserContext& context)
     {
         return adoptRef(new StyleSheetContents(context));
     }
 
     ~StyleSheetContents();
 
     const CSSParserContext& parserContext() const { return m_parserContext; }
 
     bool parseString(const String&);
-    bool parseStringAtPosition(const String&, const TextPosition&, bool);
 
     void parserAppendRule(PassRefPtr<StyleRuleBase>);
     void parserSetUsesRemUnits(bool b) { m_usesRemUnits = b; }
 
-    // Rules other than @charset and @import.
     const Vector<RefPtr<StyleRuleBase> >& childRules() const { return m_childRules; }
 
-    unsigned ruleCount() const;
-    StyleRuleBase* ruleAt(unsigned index) const;
-
     bool usesRemUnits() const { return m_usesRemUnits; }
 
     void registerClient(CSSStyleSheet*);
     void unregisterClient(CSSStyleSheet*);
 
     void setHasMediaQueries();
     bool hasMediaQueries() const { return m_hasMediaQueries; }
 
     void shrinkToFit();
     RuleSet& ruleSet() { ASSERT(m_ruleSet); return *m_ruleSet.get(); }
     RuleSet& ensureRuleSet(const MediaQueryEvaluator&, AddRuleFlags);
     void clearRuleSet();
 
 private:
     explicit StyleSheetContents(const CSSParserContext&);
 
     bool m_usesRemUnits : 1;
     bool m_hasMediaQueries : 1;
 
     OwnPtr<RuleSet> m_ruleSet;
     Vector<RefPtr<StyleRuleBase> > m_childRules;
     CSSParserContext m_parserContext;
 
     HashSet<RawPtr<CSSStyleSheet> > m_clients;
 };
 
 } // namespace
 
 #endif  // SKY_ENGINE_CORE_CSS_STYLESHEETCONTENTS_H_