Move CSSRuleList to the garbage collected heap

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index 07290b93b09713f07b1d8b86dfeb0b8f6d5f9e94..76bda55895f20e7c816eb91ed29af03153665921 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -37,6 +37,7 @@
 #include "core/css/resolver/StyleBuilder.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/css/resolver/StyleResourceLoader.h"
+#include "heap/Handle.h"
 #include "wtf/Deque.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
@@ -137,15 +138,15 @@ public:
 
     // FIXME: It could be better to call appendAuthorStyleSheets() directly after we factor StyleResolver further.
     // https://bugs.webkit.org/show_bug.cgi?id=108890
-    void appendAuthorStyleSheets(unsigned firstNew, const Vector<RefPtr<CSSStyleSheet> >&);
+    void appendAuthorStyleSheets(unsigned firstNew, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
     void resetAuthorStyle(const ContainerNode*);
     void finishAppendAuthorStyleSheets();
 
     TreeBoundaryCrossingRules& treeBoundaryCrossingRules() { return m_treeBoundaryCrossingRules; }
     void processScopedRules(const RuleSet& authorRules, const KURL&, ContainerNode* scope = 0);
 
-    void lazyAppendAuthorStyleSheets(unsigned firstNew, const Vector<RefPtr<CSSStyleSheet> >&);
-    void removePendingAuthorStyleSheets(const Vector<RefPtr<CSSStyleSheet> >&);
+    void lazyAppendAuthorStyleSheets(unsigned firstNew, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
+    void removePendingAuthorStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&);
     void appendPendingAuthorStyleSheets();
     bool hasPendingAuthorStyleSheets() const { return m_pendingStyleSheets.size() > 0 || m_needCollectFeatures; }
 
@@ -176,8 +177,8 @@ public:
         AllButEmptyCSSRules = UAAndUserCSSRules | AuthorCSSRules | CrossOriginCSSRules,
         AllCSSRules         = AllButEmptyCSSRules | EmptyCSSRules,
     };
-    PassRefPtr<CSSRuleList> cssRulesForElement(Element*, unsigned rulesToInclude = AllButEmptyCSSRules);
-    PassRefPtr<CSSRuleList> pseudoCSSRulesForElement(Element*, PseudoId, unsigned rulesToInclude = AllButEmptyCSSRules);
+    PassRefPtrWillBeRawPtr<CSSRuleList> cssRulesForElement(Element*, unsigned rulesToInclude = AllButEmptyCSSRules);
+    PassRefPtrWillBeRawPtr<CSSRuleList> pseudoCSSRulesForElement(Element*, PseudoId, unsigned rulesToInclude = AllButEmptyCSSRules);
     PassRefPtr<StyleRuleList> styleRulesForElement(Element*, unsigned rulesToInclude);
 
     // |properties| is an array with |count| elements.