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

Source/core/html/HTMLStyleElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2010 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 44 matching lines @@
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
     HTMLStyleElement(Document&, bool createdByParser);
 
     // overload from HTMLElement
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void didNotifySubtreeInsertionsToDocument() OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
+    virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
 
     virtual void finishParsingChildren() OVERRIDE;
 
     virtual bool sheetLoaded() OVERRIDE { return StyleElement::sheetLoaded(document()); }
     virtual void notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred) OVERRIDE;
     virtual void startLoadingDynamicSheet() OVERRIDE { StyleElement::startLoadingDynamicSheet(document()); }
 
     virtual const AtomicString& media() const OVERRIDE;
     virtual const AtomicString& type() const OVERRIDE;
 
     bool m_firedLoad;
     bool m_loadedSheet;
 };
 
 } //namespace
 
 #endif