Oilpan: Replace RefPtrs to Node and its subclasses in core/events/ with Oilpan transition types.

Source/core/events/MutationEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 13 matching lines @@
 #include "core/events/MutationEvent.h"
 
 namespace WebCore {
 
 MutationEvent::MutationEvent()
     : m_attrChange(0)
 {
     ScriptWrappable::init(this);
 }
 
-MutationEvent::MutationEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<Node> relatedNode,
+MutationEvent::MutationEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<Node> relatedNode,
                              const String& prevValue, const String& newValue,
                              const String& attrName, unsigned short attrChange)
     : Event(type, canBubble, cancelable)
     , m_relatedNode(relatedNode)
     , m_prevValue(prevValue)
     , m_newValue(newValue)
     , m_attrName(attrName)
     , m_attrChange(attrChange)
 {
     ScriptWrappable::init(this);
 }
 
 MutationEvent::~MutationEvent()
 {
 }
 
-void MutationEvent::initMutationEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<Node> relatedNode,
+void MutationEvent::initMutationEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<Node> relatedNode,
                                       const String& prevValue, const String& newValue,
                                       const String& attrName, unsigned short attrChange)
 {
     if (dispatched())
         return;
 
     initEvent(type, canBubble, cancelable);
 
     m_relatedNode = relatedNode;
     m_prevValue = prevValue;
     m_newValue = newValue;
     m_attrName = attrName;
     m_attrChange = attrChange;
 }
 
 const AtomicString& MutationEvent::interfaceName() const
 {
     return EventNames::MutationEvent;
 }
 
 void MutationEvent::trace(Visitor* visitor)
 {
+    visitor->trace(m_relatedNode);
     Event::trace(visitor);
 }
 
 } // namespace WebCore