[oilpan] Handlify childrenChanged.

Source/core/svg/SVGScriptElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 29 matching lines @@
 
     String type() const;
     void setType(const String&);
 
 private:
     SVGScriptElement(const QualifiedName&, Handle<Document>, bool wasInsertedByParser, bool alreadyStarted);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(const Handle<ContainerNode>&) OVERRIDE;
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
+    virtual void childrenChanged(bool changedByParser = false, const Handle<Node>& beforeChange = nullptr, const Handle<Node>& afterChange = nullptr, int childCountDelta = 0);
 
     virtual void svgAttributeChanged(const QualifiedName&);
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     virtual void finishParsingChildren();
 
     virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
 
     virtual bool haveLoadedRequiredResources() { return SVGExternalResourcesRequired::haveLoadedRequiredResources(); }
 
     virtual String sourceAttributeValue() const;
@@ skipping 22 matching lines @@
     END_DECLARE_ANIMATED_PROPERTIES
 
     String m_type;
     Timer<SVGElement> m_svgLoadEventTimer;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif