Oilpan: Enable oilpan for callback classes

Source/modules/mediastream/RTCErrorCallback.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
  */
 
 #ifndef RTCErrorCallback_h
 #define RTCErrorCallback_h
 
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
-class RTCErrorCallback : public NoBaseWillBeGarbageCollectedFinalized<RTCErrorCallback> {
+class RTCErrorCallback : public GarbageCollectedFinalized<RTCErrorCallback> {
 public:
     virtual ~RTCErrorCallback() { }
     virtual void trace(Visitor*) { }
     virtual void handleEvent(const String& errorInformation) = 0;
 };
 
 } // namespace blink
 
 #endif // RTCErrorCallback_h