Remove single client special cases for 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 37 matching lines @@
         return adoptRef(new StyleSheetContents(context));
     }
 
     ~StyleSheetContents();
 
     const CSSParserContext& parserContext() const { return m_parserContext; }
 
     bool parseString(const String&);
     bool parseStringAtPosition(const String&, const TextPosition&, bool);
 
-    bool hasSingleOwnerNode() const;
-    Node* singleOwnerNode() const;
-    Document* singleOwnerDocument() const;
-
     void parserAppendRule(PassRefPtr<StyleRuleBase>);
     void parserSetUsesRemUnits(bool b) { m_usesRemUnits = b; }
 
-    void clearRules();
-
     // 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*);
-    size_t clientSize() const { return m_loadingClients.size() + m_completedClients.size(); }
-    bool hasOneClient() const { return clientSize() == 1; }
-
-    void removeSheetFromCache(Document*);
 
     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&);
 
     void notifyRemoveFontFaceRule(const StyleRuleFontFace*);
 
-    Document* clientSingleOwnerDocument() const;
-
     bool m_usesRemUnits : 1;
     bool m_hasMediaQueries : 1;
-    bool m_hasSingleOwnerDocument : 1;
 
     OwnPtr<RuleSet> m_ruleSet;
     Vector<RefPtr<StyleRuleBase> > m_childRules;
     CSSParserContext m_parserContext;
 
     HashSet<RawPtr<CSSStyleSheet> > m_loadingClients;
     HashSet<RawPtr<CSSStyleSheet> > m_completedClients;
     typedef HashSet<RawPtr<CSSStyleSheet> >::iterator ClientsIterator;
 };
 
 } // namespace
 
 #endif  // SKY_ENGINE_CORE_CSS_STYLESHEETCONTENTS_H_