Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/core/events/GenericEventQueue.h

Index: Source/core/events/GenericEventQueue.h
diff --git a/Source/core/events/GenericEventQueue.h b/Source/core/events/GenericEventQueue.h
index cf8e8a6584858e9eefc887e4369f448cd6f23f60..25eadb2bce50343ea115967dc55945657dcbcf60 100644
--- a/Source/core/events/GenericEventQueue.h
+++ b/Source/core/events/GenericEventQueue.h
@@ -43,7 +43,7 @@ public:
     virtual ~GenericEventQueue();
 
     // EventQueue
-    virtual bool enqueueEvent(PassRefPtr<Event>) OVERRIDE;
+    virtual bool enqueueEvent(PassRefPtrWillBeRawPtr<Event>) OVERRIDE;
     virtual bool cancelEvent(Event*) OVERRIDE;
     virtual void close() OVERRIDE;
 
@@ -54,7 +54,7 @@ private:
     void timerFired(Timer<GenericEventQueue>*);
 
     EventTarget* m_owner;
-    Vector<RefPtr<Event> > m_pendingEvents;
+    WillBePersistentHeapVector<RefPtrWillBeMember<Event> > m_pendingEvents;
     Timer<GenericEventQueue> m_timer;
 
     bool m_isClosed;