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

Source/core/html/HTMLImageElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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 109 matching lines @@
 }
 
 HTMLFormElement* HTMLImageElement::formOwner() const
 {
     return m_form.get();
 }
 
 void HTMLImageElement::formRemovedFromTree(const Node& formRoot)
 {
     ASSERT(m_form);
-    if (highestAncestor() != formRoot)
+    if (highestAncestorOrSelf() != formRoot)
         resetFormOwner();
 }
 
 void HTMLImageElement::resetFormOwner()
 {
     m_formWasSetByParser = false;
     HTMLFormElement* nearestForm = findFormAncestor();
     if (m_form) {
         if (nearestForm == m_form.get())
             return;
@@ skipping 80 matching lines @@
         if (!m_imageLoader.image() && !renderImageResource->cachedImage())
             renderImage->setImageSizeForAltText();
         else
             renderImageResource->setImageResource(m_imageLoader.image());
 
     }
 }
 
 Node::InsertionNotificationRequest HTMLImageElement::insertedInto(ContainerNode* insertionPoint)
 {
-    if (!m_formWasSetByParser || insertionPoint->highestAncestor() != m_form->highestAncestor())
+    if (!m_formWasSetByParser || insertionPoint->highestAncestorOrSelf() != m_form->highestAncestorOrSelf())
         resetFormOwner();
 
     // If we have been inserted from a renderer-less document,
     // our loader may have not fetched the image, so do it now.
     if (insertionPoint->inDocument() && !m_imageLoader.image())
         m_imageLoader.updateFromElement();
 
     return HTMLElement::insertedInto(insertionPoint);
 }
 
 void HTMLImageElement::removedFrom(ContainerNode* insertionPoint)
 {
-    if (!m_form || m_form->highestAncestor() != highestAncestor())
+    if (!m_form || m_form->highestAncestorOrSelf() != highestAncestorOrSelf())
         resetFormOwner();
     HTMLElement::removedFrom(insertionPoint);
 }
 
 int HTMLImageElement::width(bool ignorePendingStylesheets)
 {
     if (!renderer()) {
         // check the attribute first for an explicit pixel value
         bool ok;
         int width = getAttribute(widthAttr).toInt(&ok);
@@ skipping 210 matching lines @@
     if (!image)
         return FloatSize();
     LayoutSize size;
     size = image->imageSizeForRenderer(renderer(), 1.0f); // FIXME: Not sure about this.
     if (renderer() && renderer()->isRenderImage() && image->image() && !image->image()->hasRelativeWidth())
         size.scale(toRenderImage(renderer())->imageDevicePixelRatio());
     return size;
 }
 
 }