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

Source/modules/mediastream/RTCPeerConnection.cpp

Index: Source/modules/mediastream/RTCPeerConnection.cpp
diff --git a/Source/modules/mediastream/RTCPeerConnection.cpp b/Source/modules/mediastream/RTCPeerConnection.cpp
index 696ddc874f2904093efa37104d42cd63fac349ad..b359c31b0e3f25ab0cc9dbecf37c08b9becf42df 100644
--- a/Source/modules/mediastream/RTCPeerConnection.cpp
+++ b/Source/modules/mediastream/RTCPeerConnection.cpp
@@ -689,7 +689,7 @@ void RTCPeerConnection::changeIceConnectionState(ICEConnectionState iceConnectio
     }
 }
 
-void RTCPeerConnection::scheduleDispatchEvent(PassRefPtr<Event> event)
+void RTCPeerConnection::scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
 {
     m_scheduledEvents.append(event);
 
@@ -701,10 +701,10 @@ void RTCPeerConnection::dispatchScheduledEvent()
     if (m_stopped)
         return;
 
-    Vector<RefPtr<Event> > events;
+    WillBeHeapVector<RefPtrWillBeMember<Event> > events;
     events.swap(m_scheduledEvents);
 
-    Vector<RefPtr<Event> >::iterator it = events.begin();
+    WillBeHeapVector<RefPtrWillBeMember<Event> >::iterator it = events.begin();
     for (; it != events.end(); ++it)
         dispatchEvent((*it).release());