Remove tons of OILPAN.

sky/engine/core/events/MouseEvent.cpp

Index: sky/engine/core/events/MouseEvent.cpp
diff --git a/sky/engine/core/events/MouseEvent.cpp b/sky/engine/core/events/MouseEvent.cpp
index 700bbcb22849ad370478564062e3c92b1d6e37c8..08f8b7af25d31995522b388554eb5a7351248b9c 100644
--- a/sky/engine/core/events/MouseEvent.cpp
+++ b/sky/engine/core/events/MouseEvent.cpp
@@ -184,12 +184,6 @@ Node* MouseEvent::fromElement() const
     return target() ? target()->toNode() : 0;
 }
 
-void MouseEvent::trace(Visitor* visitor)
-{
-    visitor->trace(m_relatedTarget);
-    MouseRelatedEvent::trace(visitor);
-}
-
 PassRefPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent)
 {
     return adoptRef(new SimulatedMouseEvent(eventType, view, underlyingEvent));
@@ -218,11 +212,6 @@ SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefP
     }
 }
 
-void SimulatedMouseEvent::trace(Visitor* visitor)
-{
-    MouseEvent::trace(visitor);
-}
-
 PassRefPtr<MouseEventDispatchMediator> MouseEventDispatchMediator::create(PassRefPtr<MouseEvent> mouseEvent, MouseEventType mouseEventType)
 {
     return adoptRef(new MouseEventDispatchMediator(mouseEvent, mouseEventType));