Clean up accessibility enums for use in Chromium.

Source/core/accessibility/AccessibilityNodeObject.cpp

 /*
 * Copyright (C) 2012, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 157 matching lines @@
     if (!node())
         return UnknownRole;
 
     m_ariaRole = determineAriaRoleAttribute();
 
     AccessibilityRole ariaRole = ariaRoleAttribute();
     if (ariaRole != UnknownRole)
         return ariaRole;
 
     if (node()->isLink())
-        return WebCoreLinkRole;
+        return LinkRole;
     if (node()->isTextNode())
         return StaticTextRole;
     if (node()->hasTagName(buttonTag))
         return buttonRoleType();
     if (node()->hasTagName(inputTag)) {
         HTMLInputElement* input = toHTMLInputElement(node());
         if (input->isCheckbox())
             return CheckBoxRole;
         if (input->isRadioButton())
             return RadioButtonRole;
@@ skipping 328 matching lines @@
         return false;
 
     if (roleValue() == ButtonRole && node->hasTagName(inputTag))
         return toHTMLInputElement(node)->isImageButton();
 
     return false;
 }
 
 bool AccessibilityNodeObject::isLink() const
 {
-    return roleValue() == WebCoreLinkRole;
+    return roleValue() == LinkRole;
 }
 
 bool AccessibilityNodeObject::isMenu() const
 {
     return roleValue() == MenuRole;
 }
 
 bool AccessibilityNodeObject::isMenuButton() const
 {
     return roleValue() == MenuButtonRole;
@@ skipping 1132 matching lines @@
         useTextUnderElement = true;
 
     if (useTextUnderElement) {
         String text = textUnderElement();
         if (!text.isEmpty())
             textOrder.append(AccessibilityText(text, ChildrenText));
     }
 }
 
 } // namespace WebCore