Update renderer to layoutObject in core/html.

Source/core/html/HTMLAreaElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2011 Apple 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 196 matching lines @@
 {
     if (focused() == shouldBeFocused)
         return;
 
     HTMLAnchorElement::setFocus(shouldBeFocused);
 
     HTMLImageElement* imageElement = this->imageElement();
     if (!imageElement)
         return;
 
-    LayoutObject* renderer = imageElement->layoutObject();
-    if (!renderer || !renderer->isImage())
+    LayoutObject* layoutObject = imageElement->layoutObject();
+    if (!layoutObject || !layoutObject->isImage())
         return;
 
-    toLayoutImage(renderer)->areaElementFocusChanged(this);
+    toLayoutImage(layoutObject)->areaElementFocusChanged(this);
 }
 
 void HTMLAreaElement::updateFocusAppearance(bool restorePreviousSelection)
 {
     if (!isFocusable())
         return;
 
     HTMLImageElement* imageElement = this->imageElement();
     if (!imageElement)
         return;
 
     imageElement->updateFocusAppearance(restorePreviousSelection);
 }
 
 }