Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/core/events/EventListener.h

Index: Source/core/events/EventListener.h
diff --git a/Source/core/events/EventListener.h b/Source/core/events/EventListener.h
index 981032d8faf13d55688fb823104bf42ef89fd42e..563d3fb1ca470051fdaff4546bc0f7947a237386 100644
--- a/Source/core/events/EventListener.h
+++ b/Source/core/events/EventListener.h
@@ -22,6 +22,7 @@
 #define EventListener_h
 
 #include "core/CoreExport.h"
+#include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
@@ -29,7 +30,7 @@ namespace blink {
     class Event;
     class ExecutionContext;
 
-    class CORE_EXPORT EventListener : public RefCounted<EventListener> {
+    class CORE_EXPORT EventListener : public RefCountedWillBeGarbageCollectedFinalized<EventListener> {
     public:
         enum Type {
             JSEventListenerType,
@@ -48,6 +49,8 @@ namespace blink {
         bool isAttribute() const { return virtualisAttribute(); }
         Type type() const { return m_type; }
 
+        DEFINE_INLINE_VIRTUAL_TRACE() { }
+
     protected:
         explicit EventListener(Type type)
             : m_type(type)