[oilpan] Handlify childrenChanged.

Source/core/svg/SVGFontFaceUriElement.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 23 matching lines @@
     static PassRefPtr<SVGFontFaceUriElement> create(const QualifiedName&, Handle<Document>);
 
     virtual ~SVGFontFaceUriElement();
 
     Result<CSSFontFaceSrcValue> srcValue() const;
 
 private:
     SVGFontFaceUriElement(const QualifiedName&, Handle<Document>);
     
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) 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 InsertionNotificationRequest insertedInto(const Handle<ContainerNode>&) OVERRIDE;
 
     void loadFont();
 
     CachedResourceHandle<CachedFont> m_cachedFont;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG_FONTS)
 #endif
 
 // vim:ts=4:noet