Move CSSRuleList to the garbage collected heap

Source/core/css/CSSRuleList.cpp

Index: Source/core/css/CSSRuleList.cpp
diff --git a/Source/core/css/CSSRuleList.cpp b/Source/core/css/CSSRuleList.cpp
index 499518bde5d45da3b6ce26c1cbaffecb21fad241..21bf906cd4bc500f1d1e1ed8e27738fe4527e5de 100644
--- a/Source/core/css/CSSRuleList.cpp
+++ b/Source/core/css/CSSRuleList.cpp
@@ -35,7 +35,9 @@ CSSRuleList::~CSSRuleList()
 }
 
 StaticCSSRuleList::StaticCSSRuleList()
+#if !ENABLE(OILPAN)
     : m_refCount(1)
+#endif
 {
 }
 
@@ -43,11 +45,19 @@ StaticCSSRuleList::~StaticCSSRuleList()
 {
 }
 
+#if !ENABLE(OILPAN)
 void StaticCSSRuleList::deref()
 {
     ASSERT(m_refCount);
     if (!--m_refCount)
         delete this;
 }
+#endif
+
+void StaticCSSRuleList::trace(Visitor* visitor)
+{
+    visitor->trace(m_rules);
+}
+
 
 } // namespace WebCore