Oilpan: Enable oilpan for callback classes

Source/modules/mediastream/RTCStatsRequestImpl.cpp

Index: Source/modules/mediastream/RTCStatsRequestImpl.cpp
diff --git a/Source/modules/mediastream/RTCStatsRequestImpl.cpp b/Source/modules/mediastream/RTCStatsRequestImpl.cpp
index 56351dda4d83b0671a9896ee02c04a894c87fe69..bd38dfd9a0d0b5090e3d8e9b99b5b57224a68905 100644
--- a/Source/modules/mediastream/RTCStatsRequestImpl.cpp
+++ b/Source/modules/mediastream/RTCStatsRequestImpl.cpp
@@ -31,14 +31,14 @@
 
 namespace blink {
 
-RTCStatsRequestImpl* RTCStatsRequestImpl::create(ExecutionContext* context, RTCPeerConnection* requester, PassOwnPtrWillBeRawPtr<RTCStatsCallback> callback, MediaStreamTrack* selector)
+RTCStatsRequestImpl* RTCStatsRequestImpl::create(ExecutionContext* context, RTCPeerConnection* requester, RTCStatsCallback* callback, MediaStreamTrack* selector)
 {
     RTCStatsRequestImpl* request = new RTCStatsRequestImpl(context, requester, callback, selector);
     request->suspendIfNeeded();
     return request;
 }
 
-RTCStatsRequestImpl::RTCStatsRequestImpl(ExecutionContext* context, RTCPeerConnection* requester, PassOwnPtrWillBeRawPtr<RTCStatsCallback> callback, MediaStreamTrack* selector)
+RTCStatsRequestImpl::RTCStatsRequestImpl(ExecutionContext* context, RTCPeerConnection* requester, RTCStatsCallback* callback, MediaStreamTrack* selector)
     : ActiveDOMObject(context)
     , m_successCallback(callback)
     , m_component(selector ? selector->component() : 0)