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

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1778 matching lines @@
 {
     RenderStyle* style = renderStyle();
 
     if (!style && !styleAffectedByEmpty())
         return;
 
     if (!style || (styleAffectedByEmpty() && (!style->emptyState() || hasChildren())))
         setNeedsStyleRecalc(SubtreeStyleChange);
 }
 
-void Element::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+void Element::childrenChanged(const ChildrenChange& change)
 {
-    ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+    ContainerNode::childrenChanged(change);
 
     checkForEmptyStyleChange();
-    if (!changedByParser)
-        checkForSiblingStyleChanges(false, beforeChange, afterChange, childCountDelta);
+    if (!change.byParser)
+        checkForSiblingStyleChanges(change.type == ChildRemoved ? SiblingRemoved : Other, change.siblingBeforeChange, change.siblingAfterChange);
 
     if (ElementShadow* shadow = this->shadow())
         shadow->setNeedsDistributionRecalc();
 }
 
 void Element::finishParsingChildren()
 {
     setIsFinishedParsingChildren(true);
     checkForEmptyStyleChange();
-    checkForSiblingStyleChanges(true, lastChild(), 0, 0);
+    checkForSiblingStyleChanges(FinishedParsingChildren, lastChild(), nullptr);
 }
 
 #ifndef NDEBUG
 void Element::formatForDebugger(char* buffer, unsigned length) const
 {
     StringBuilder result;
     String s;
 
     result.append(nodeName());
 
@@ skipping 1513 matching lines @@
 
 void Element::trace(Visitor* visitor)
 {
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
     ContainerNode::trace(visitor);
 }
 
 } // namespace WebCore