[oilpan] Handlify childrenChanged.

Source/core/html/HTMLOutputElement.cpp

 /*
  * Copyright (c) 2010 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 63 matching lines @@
 DOMSettableTokenList* HTMLOutputElement::htmlFor() const
 {
     return m_tokens.get();
 }
 
 void HTMLOutputElement::setFor(const String& value)
 {
     m_tokens->setValue(value);
 }
 
-void HTMLOutputElement::childrenChanged(bool createdByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+void HTMLOutputElement::childrenChanged(bool createdByParser, const Handle<Node>& beforeChange, const Handle<Node>& afterChange, int childCountDelta)
 {
     HTMLFormControlElement::childrenChanged(createdByParser, beforeChange, afterChange, childCountDelta);
 
     if (createdByParser || m_isSetTextContentInProgress) {
         m_isSetTextContentInProgress = false;
         return;
     }
 
     if (m_isDefaultValueMode)
         m_defaultValue = textContent();
@@ skipping 46 matching lines @@
     m_isSetTextContentInProgress = true;
     setTextContent(value, IGNORE_EXCEPTION);
 }
 
 void HTMLOutputElement::accept(Visitor* visitor) const
 {
     HTMLFormControlElement::accept(visitor);
 }
 
 } // namespace