Rename Node::lastDescendant() / Node::highestAncestor() for clarity

Source/core/html/HTMLFormElement.cpp

 /*
  * 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, 2008, 2009 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * 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
@@ skipping 118 matching lines @@
     for (size_t i = 0; i < size; ++i)
         elements[i]->formRemovedFromTree(root);
     ASSERT(elements.size() == size);
 }
 
 void HTMLFormElement::removedFrom(ContainerNode* insertionPoint)
 {
     // We don't need to take care of form association by 'form' content
     // attribute becuse IdTargetObserver handles it.
     if (m_hasElementsAssociatedByParser) {
-        Node& root = highestAncestor();
+        Node& root = highestAncestorOrSelf();
         if (!m_associatedElementsAreDirty) {
             Vector<FormAssociatedElement*> elements(associatedElements());
             notifyFormRemovedFromTree(elements, root);
         } else {
             Vector<FormAssociatedElement*> elements;
-            collectAssociatedElements(insertionPoint->highestAncestor(), elements);
+            collectAssociatedElements(insertionPoint->highestAncestorOrSelf(), elements);
             notifyFormRemovedFromTree(elements, root);
             collectAssociatedElements(root, elements);
             notifyFormRemovedFromTree(elements, root);
         }
 
         if (!m_imageElementsAreDirty) {
             Vector<HTMLImageElement*> images(imageElements());
             notifyFormRemovedFromTree(images, root);
         } else {
             Vector<HTMLImageElement*> images;
-            collectImageElements(insertionPoint->highestAncestor(), images);
+            collectImageElements(insertionPoint->highestAncestorOrSelf(), images);
             notifyFormRemovedFromTree(images, root);
             collectImageElements(root, images);
             notifyFormRemovedFromTree(images, root);
         }
     }
     HTMLElement::removedFrom(insertionPoint);
 }
 
 void HTMLFormElement::handleLocalEvents(Event* event)
 {
@@ skipping 390 matching lines @@
 
 // This function should be const conceptually. However we update some fields
 // because of lazy evaluation.
 const Vector<FormAssociatedElement*>& HTMLFormElement::associatedElements() const
 {
     if (!m_associatedElementsAreDirty)
         return m_associatedElements;
     HTMLFormElement* mutableThis = const_cast<HTMLFormElement*>(this);
     Node* scope = mutableThis;
     if (m_hasElementsAssociatedByParser)
-        scope = &highestAncestor();
+        scope = &highestAncestorOrSelf();
     if (inDocument() && treeScope().idTargetObserverRegistry().hasObservers(fastGetAttribute(idAttr)))
         scope = &treeScope().rootNode();
     ASSERT(scope);
     collectAssociatedElements(*scope, mutableThis->m_associatedElements);
     mutableThis->m_associatedElementsAreDirty = false;
     return m_associatedElements;
 }
 
 void HTMLFormElement::collectImageElements(Node& root, Vector<HTMLImageElement*>& elements)
 {
     elements.clear();
     for (HTMLImageElement* image = Traversal<HTMLImageElement>::firstWithin(root); image; image = Traversal<HTMLImageElement>::next(*image)) {
         if (image->formOwner() == this)
             elements.append(image);
     }
 }
 
 const Vector<HTMLImageElement*>& HTMLFormElement::imageElements()
 {
     if (!m_imageElementsAreDirty)
         return m_imageElements;
-    collectImageElements(m_hasElementsAssociatedByParser ? highestAncestor() : *this, m_imageElements);
+    collectImageElements(m_hasElementsAssociatedByParser ? highestAncestorOrSelf() : *this, m_imageElements);
     m_imageElementsAreDirty = false;
     return m_imageElements;
 }
 
 String HTMLFormElement::name() const
 {
     return getNameAttribute();
 }
 
 bool HTMLFormElement::noValidate() const
@@ skipping 178 matching lines @@
 }
 
 void HTMLFormElement::setDemoted(bool demoted)
 {
     if (demoted)
         UseCounter::count(document(), UseCounter::DemotedFormElement);
     m_wasDemoted = demoted;
 }
 
 } // namespace