Move CSSRuleList to the garbage collected heap

Source/core/css/CSSStyleSheet.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 46 matching lines @@
     virtual ~CSSStyleSheet();
 
     virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
     virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; }
     virtual MediaList* media() const OVERRIDE;
     virtual String href() const OVERRIDE;
     virtual String title() const OVERRIDE { return m_title; }
     virtual bool disabled() const OVERRIDE { return m_isDisabled; }
     virtual void setDisabled(bool) OVERRIDE;
 
-    PassRefPtr<CSSRuleList> cssRules();
+    PassRefPtrWillBeRawPtr<CSSRuleList> cssRules();
     unsigned insertRule(const String& rule, unsigned index, ExceptionState&);
     unsigned insertRule(const String& rule, ExceptionState&); // Deprecated.
     void deleteRule(unsigned index, ExceptionState&);
 
     // IE Extensions
-    PassRefPtr<CSSRuleList> rules();
+    PassRefPtrWillBeRawPtr<CSSRuleList> rules();
     int addRule(const String& selector, const String& style, int index, ExceptionState&);
     int addRule(const String& selector, const String& style, ExceptionState&);
     void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); }
 
     // For CSSRuleList.
     unsigned length() const;
     CSSRule* item(unsigned index);
 
     virtual void clearOwnerNode() OVERRIDE { didMutate(EntireStyleSheetUpdate); m_ownerNode = 0; }
     virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; }
@@ skipping 49 matching lines @@
     bool m_isInlineStylesheet;
     bool m_isDisabled;
     String m_title;
     RefPtrWillBeMember<MediaQuerySet> m_mediaQueries;
 
     Node* m_ownerNode;
     RawPtrWillBeMember<CSSRule> m_ownerRule;
 
     TextPosition m_startPosition;
     bool m_loadCompleted;
-
     mutable RefPtrWillBeMember<MediaList> m_mediaCSSOMWrapper;
     mutable WillBeHeapVector<RefPtrWillBeMember<CSSRule> > m_childRuleCSSOMWrappers;
-    mutable OwnPtr<CSSRuleList> m_ruleListCSSOMWrapper;
+    mutable OwnPtrWillBeMember<CSSRuleList> m_ruleListCSSOMWrapper;
 };
 
 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet)
     : m_styleSheet(sheet)
 {
     if (m_styleSheet)
         m_styleSheet->willMutateRules();
 }
 
 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule)
     : m_styleSheet(rule ? rule->parentStyleSheet() : 0)
 {
     if (m_styleSheet)
         m_styleSheet->willMutateRules();
 }
 
 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope()
 {
     if (m_styleSheet)
         m_styleSheet->didMutateRules();
 }
 
 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet());
 
 } // namespace
 
 #endif