Pass a struct to ContainerNode::childrenChanged() instead of separate arguments

Source/core/svg/SVGFontFaceElement.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 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 43 matching lines @@
     StyleRuleFontFace* fontFaceRule() const { return m_fontFaceRule.get(); }
     WeakPtr<SVGFontFaceElement> createWeakRef() { return m_weakFactory.createWeakPtr(); }
 
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
     explicit SVGFontFaceElement(Document&);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
+    virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
 
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE { return false; }
 
     RefPtrWillBeMember<StyleRuleFontFace> m_fontFaceRule;
     RawPtrWillBeMember<SVGFontElement> m_fontElement;
     WeakPtrFactory<SVGFontFaceElement> m_weakFactory;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG_FONTS)
 #endif
 
 // vim:ts=4:noet