Oilpan: Remove Persistent handles from heap allocated CSSRule objects and fix finalization of CSSKe…

Source/core/css/CSSPageRule.cpp

Index: Source/core/css/CSSPageRule.cpp
diff --git a/Source/core/css/CSSPageRule.cpp b/Source/core/css/CSSPageRule.cpp
index ffe63377aebb6d225cb89a848fdf3bd403c0f5a1..46ab342d1f4378d958c57c92a475d4ed04cb8bdf 100644
--- a/Source/core/css/CSSPageRule.cpp
+++ b/Source/core/css/CSSPageRule.cpp
@@ -101,4 +101,10 @@ void CSSPageRule::reattach(StyleRuleBase* rule)
         m_propertiesCSSOMWrapper->reattach(m_pageRule->mutableProperties());
 }
 
+void CSSPageRule::trace(Visitor* visitor)
+{
+    visitor->trace(m_pageRule);
+    CSSRule::trace(visitor);
+}
+
 } // namespace WebCore