Oilpan: Make the Node hierarchy RefCountedGarbageCollected instead of TreeShared.

Source/core/svg/animation/SVGSMILElement.cpp

Index: Source/core/svg/animation/SVGSMILElement.cpp
diff --git a/Source/core/svg/animation/SVGSMILElement.cpp b/Source/core/svg/animation/SVGSMILElement.cpp
index f91e40531003a383305ee5a40545281040fbb004..2d8ac3c298412a98aad4a82cb8c1b5f773352a9c 100644
--- a/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/Source/core/svg/animation/SVGSMILElement.cpp
@@ -169,7 +169,7 @@ SVGSMILElement::Condition::Condition(Type type, BeginOrEnd beginOrEnd, const Str
 SVGSMILElement::SVGSMILElement(const QualifiedName& tagName, Document& doc)
     : SVGElement(tagName, doc)
     , m_attributeName(anyQName())
-    , m_targetElement(0)
+    , m_targetElement(nullptr)
     , m_syncBaseConditionsConnected(false)
     , m_hasEndEventConditions(false)
     , m_isWaitingForFirstInterval(true)
@@ -199,9 +199,11 @@ SVGSMILElement::~SVGSMILElement()
     smilBeginEventSender().cancelEvent(this);
     smilRepeatEventSender().cancelEvent(this);
     smilRepeatNEventSender().cancelEvent(this);
+#if !ENABLE(OILPAN)
     clearConditions();
     if (m_timeContainer && m_targetElement && hasValidAttributeName())
         m_timeContainer->unschedule(this, m_targetElement, m_attributeName);
+#endif
 }
 
 void SVGSMILElement::clearResourceAndEventBaseReferences()
@@ -1330,4 +1332,10 @@ void SVGSMILElement::dispatchPendingEvent(SMILEventSender* eventSender)
     }
 }
 
+void SVGSMILElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_targetElement);
+    SVGElement::trace(visitor);
+}
+
 }