Oilpan: move DOMWindow object to the oilpan heap.

Source/core/events/MouseRelatedEvent.cpp

Index: Source/core/events/MouseRelatedEvent.cpp
diff --git a/Source/core/events/MouseRelatedEvent.cpp b/Source/core/events/MouseRelatedEvent.cpp
index 6918ae3d6283ffc6e043badd52c3ec0fb2291ebc..842e0853c682345c0cf88f15c3b8fa87ee86d8f0 100644
--- a/Source/core/events/MouseRelatedEvent.cpp
+++ b/Source/core/events/MouseRelatedEvent.cpp
@@ -52,7 +52,7 @@ static LayoutSize contentsScrollOffset(AbstractView* abstractView)
     return LayoutSize(frameView->scrollX() / scaleFactor, frameView->scrollY() / scaleFactor);
 }
 
-MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtr<AbstractView> abstractView,
+MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> abstractView,
                                      int detail, const IntPoint& screenLocation, const IntPoint& windowLocation,
                                      const IntPoint& movementDelta,
                                      bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool isSimulated)