Make earcon ids strings instead of numbers.

chrome/browser/resources/chromeos/chromevox/common/aria_util.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview A collection of JavaScript utilities used to simplify working
  * with ARIA (http://www.w3.org/TR/wai-aria).
  */
 
 
@@ skipping 887 matching lines @@
         return true;
     }
     return false;
 };
 
 
 /**
  * Returns the id of an earcon to play along with the description for a node.
  *
  * @param {Node} node The node to get the earcon for.
- * @return {number?} The earcon id, or null if none applies.
+ * @return {cvox.Earcon?} The earcon id, or null if none applies.
  */
 cvox.AriaUtil.getEarcon = function(node) {
   if (!node || !node.getAttribute) {
     return null;
   }
   var role = cvox.AriaUtil.getRoleAttribute(node);
   switch (role) {
     case 'button':
-      return cvox.AbstractEarcons.BUTTON;
+      return cvox.Earcon.BUTTON;
     case 'checkbox':
     case 'radio':
     case 'menuitemcheckbox':
     case 'menuitemradio':
       var checked = node.getAttribute('aria-checked');
       if (checked == 'true') {
-        return cvox.AbstractEarcons.CHECK_ON;
+        return cvox.Earcon.CHECK_ON;
       } else {
-        return cvox.AbstractEarcons.CHECK_OFF;
+        return cvox.Earcon.CHECK_OFF;
       }
     case 'combobox':
     case 'listbox':
-      return cvox.AbstractEarcons.LISTBOX;
+      return cvox.Earcon.LISTBOX;
     case 'textbox':
-      return cvox.AbstractEarcons.EDITABLE_TEXT;
+      return cvox.Earcon.EDITABLE_TEXT;
     case 'listitem':
-      return cvox.AbstractEarcons.BULLET;
+      return cvox.Earcon.BULLET;
     case 'link':
-      return cvox.AbstractEarcons.LINK;
+      return cvox.Earcon.LINK;
   }
 
   return null;
 };
 
 
 /**
  * Returns the role of the node.
  *
  * This is equivalent to targetNode.getAttribute('role')
@@ skipping 22 matching lines @@
  * @param {Node} node The node to be checked.
  * @return {boolean} Whether or not the node is an ARIA math node.
  */
 cvox.AriaUtil.isMath = function(node) {
   if (!node || !node.getAttribute) {
     return false;
   }
   var role = cvox.AriaUtil.getRoleAttribute(node);
   return role == 'math';
 };