Remove some unused code

Source/core/css/StyleSheetContents.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 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 406 matching lines @@
         return (*root->m_loadingClients.begin())->ownerNode();
     return (*root->m_completedClients.begin())->ownerNode();
 }
 
 Document* StyleSheetContents::singleOwnerDocument() const
 {
     StyleSheetContents* root = rootStyleSheet();
     return root->clientSingleOwnerDocument();
 }
 
-KURL StyleSheetContents::completeURL(const String& url) const
-{
-    // FIXME: This is only OK when we have a singleOwnerNode, right?
-    return m_parserContext.completeURL(url);
-}
-
 static bool childRulesHaveFailedOrCanceledSubresources(const WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& rules)
 {
     for (unsigned i = 0; i < rules.size(); ++i) {
         const StyleRuleBase* rule = rules[i].get();
         switch (rule->type()) {
         case StyleRuleBase::Style:
             if (toStyleRule(rule)->properties().hasFailedOrCanceledSubresources())
                 return true;
             break;
         case StyleRuleBase::FontFace:
@@ skipping 100 matching lines @@
     m_isInMemoryCache = true;
 }
 
 void StyleSheetContents::removedFromMemoryCache()
 {
     ASSERT(m_isInMemoryCache);
     ASSERT(isCacheable());
     m_isInMemoryCache = false;
 }
 
-void StyleSheetContents::shrinkToFit()
-{
-    m_importRules.shrinkToFit();
-    m_childRules.shrinkToFit();
-}
-
 RuleSet& StyleSheetContents::ensureRuleSet(const MediaQueryEvaluator& medium, AddRuleFlags addRuleFlags)
 {
     if (!m_ruleSet) {
         m_ruleSet = RuleSet::create();
         m_ruleSet->addRulesFromSheet(this, medium, addRuleFlags);
     }
     return *m_ruleSet.get();
 }
 
 static void clearResolvers(WillBeHeapHashSet<RawPtrWillBeWeakMember<CSSStyleSheet>>& clients)
@@ skipping 70 matching lines @@
     visitor->trace(m_ownerRule);
     visitor->trace(m_importRules);
     visitor->trace(m_childRules);
     visitor->trace(m_loadingClients);
     visitor->trace(m_completedClients);
     visitor->trace(m_ruleSet);
 #endif
 }
 
 }