Rename childNodeCount() / childNode() methods for clarity

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 1786 matching lines @@
         break;
     }
     return false;
 }
 
 void Element::checkForEmptyStyleChange(RenderStyle* style)
 {
     if (!style && !styleAffectedByEmpty())
         return;
 
-    if (!style || (styleAffectedByEmpty() && (!style->emptyState() || hasChildNodes())))
+    if (!style || (styleAffectedByEmpty() && (!style->emptyState() || hasChildren())))
         setNeedsStyleRecalc(SubtreeStyleChange);
 }
 
 void Element::checkForSiblingStyleChanges(bool finishedParsingCallback, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     if (!inActiveDocument() || document().hasPendingForcedStyleRecalc() || styleChangeType() >= SubtreeStyleChange)
         return;
 
     RenderStyle* style = renderStyle();
 
@@ skipping 1685 matching lines @@
     // Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
     // and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
     if (hasTagName(optionTag) || hasTagName(optgroupTag))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore