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

Source/core/html/HTMLSelectElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 374 matching lines @@
 }
 
 void HTMLSelectElement::updateListItemSelectedStates()
 {
     if (!m_shouldRecalcListItems)
         return;
     recalcListItems();
     setNeedsValidityCheck();
 }
 
-void HTMLSelectElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+void HTMLSelectElement::childrenChanged(const ChildrenChange& change)
 {
     setRecalcListItems();
     setNeedsValidityCheck();
     m_lastOnChangeSelection.clear();
 
-    HTMLFormControlElementWithState::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+    HTMLFormControlElementWithState::childrenChanged(change);
 }
 
 void HTMLSelectElement::optionElementChildrenChanged()
 {
     setRecalcListItems();
     setNeedsValidityCheck();
 
     if (renderer()) {
         if (AXObjectCache* cache = renderer()->document().existingAXObjectCache())
             cache->childrenChanged(this);
@@ skipping 1246 matching lines @@
 
 void HTMLSelectElement::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_listItems);
 #endif
     HTMLFormControlElementWithState::trace(visitor);
 }
 
 } // namespace