Oilpan: have RepeatEvent::trace() delegate to Event::trace()

Source/core/svg/animation/SVGSMILElement.cpp

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
 public:
     static PassRefPtrWillBeRawPtr<RepeatEvent> create(const AtomicString& type, int repeat)
     {
         return adoptRefWillBeRefCountedGarbageCollected(new RepeatEvent(type, false, false, repeat));
     }
 
     virtual ~RepeatEvent() { }
 
     int repeat() const { return m_repeat; }
 
-    virtual void trace(Visitor* visitor) { }
+    virtual void trace(Visitor* visitor) OVERRIDE
+    {
+        Event::trace(visitor);
+    }
 
 protected:
     RepeatEvent(const AtomicString& type, bool canBubble, bool cancelable, int repeat = -1)
         : Event(type, canBubble, cancelable)
         , m_repeat(repeat)
     {
     }
 
 private:
     int m_repeat;
@@ skipping 1249 matching lines @@
     if (eventType == "repeatn") {
         unsigned repeatEventCount = m_repeatEventCountList.first();
         m_repeatEventCountList.remove(0);
         dispatchEvent(RepeatEvent::create(eventType, repeatEventCount));
     } else {
         dispatchEvent(Event::create(eventType));
     }
 }
 
 }