[oilpan] Handlify childrenChanged.

Source/core/html/HTMLTextAreaElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 111 matching lines @@
 FormControlState HTMLTextAreaElement::saveFormControlState() const
 {
     return m_isDirty ? FormControlState(value()) : FormControlState();
 }
 
 void HTMLTextAreaElement::restoreFormControlState(const FormControlState& state)
 {
     setValue(state[0]);
 }
 
-void HTMLTextAreaElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+void HTMLTextAreaElement::childrenChanged(bool changedByParser, const Handle<Node>& beforeChange, const Handle<Node>& afterChange, int childCountDelta)
 {
     HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
     setLastChangeWasNotUserEdit();
     if (m_isDirty)
         setInnerTextValue(value());
     else
         setNonDirtyValue(defaultValue());
 }
 
 bool HTMLTextAreaElement::isPresentationAttribute(const QualifiedName& name) const
@@ skipping 419 matching lines @@
     fixPlaceholderRenderer(m_placeholder, innerTextElement());
 }
 
 void HTMLTextAreaElement::accept(Visitor* visitor) const
 {
     visitor->visit(m_placeholder);
     HTMLTextFormControlElement::accept(visitor);
 }
 
 }