Remove some unused code

Source/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 69 matching lines @@
     StyleSheetContents* rootStyleSheet() const;
     bool hasSingleOwnerNode() const;
     Node* singleOwnerNode() const;
     Document* singleOwnerDocument() const;
 
     const String& charset() const { return m_parserContext.charset(); }
 
     bool loadCompleted() const;
     bool hasFailedOrCanceledSubresources() const;
 
-    KURL completeURL(const String& url) const;
-
     void setHasSyntacticallyValidCSSHeader(bool isValidCss);
     bool hasSyntacticallyValidCSSHeader() const { return m_hasSyntacticallyValidCSSHeader; }
 
     void setHasFontFaceRule(bool b) { m_hasFontFaceRule = b; }
     bool hasFontFaceRule() const { return m_hasFontFaceRule; }
     void findFontFaceRules(WillBeHeapVector<RawPtrWillBeMember<const StyleRuleFontFace>>& fontFaceRules);
 
     void parserAddNamespace(const AtomicString& prefix, const AtomicString& uri);
     void parserAppendRule(PassRefPtrWillBeRawPtr<StyleRuleBase>);
     void parserSetUsesRemUnits(bool b) { m_usesRemUnits = b; }
@@ skipping 45 matching lines @@
 
     bool isInMemoryCache() const { return m_isInMemoryCache; }
     void addedToMemoryCache();
     void removedFromMemoryCache();
 
     void setHasMediaQueries();
     bool hasMediaQueries() const { return m_hasMediaQueries; }
 
     bool didLoadErrorOccur() const { return m_didLoadErrorOccur; }
 
-    void shrinkToFit();
     RuleSet& ruleSet() { ASSERT(m_ruleSet); return *m_ruleSet.get(); }
     RuleSet& ensureRuleSet(const MediaQueryEvaluator&, AddRuleFlags);
     void clearRuleSet();
 
     String sourceMapURL() const { return m_sourceMapURL; }
 
     DECLARE_TRACE();
 
 private:
     StyleSheetContents(StyleRuleImport* ownerRule, const String& originalURL, const CSSParserContext&);
@@ skipping 27 matching lines @@
     WillBeHeapHashSet<RawPtrWillBeWeakMember<CSSStyleSheet>> m_loadingClients;
     WillBeHeapHashSet<RawPtrWillBeWeakMember<CSSStyleSheet>> m_completedClients;
 
     OwnPtrWillBeMember<RuleSet> m_ruleSet;
     String m_sourceMapURL;
 };
 
 } // namespace
 
 #endif