Make earcon ids strings instead of numbers.

chrome/browser/resources/chromeos/chromevox/cvox2/background/output_test.extjs

 // 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.
 
 GEN_INCLUDE(['../../testing/assert_additions.js']);
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js']);
 
 /**
  * Gets the braille output and asserts that it matches expected values.
  * Annotations in the output that are primitive strings are ignored.
@@ skipping 475 matching lines @@
   });
 });
 
 SYNC_TEST_F('OutputE2ETest', 'MessageIdAndEarconValidity', function() {
   for (var key in Output.ROLE_INFO_) {
     var value = Output.ROLE_INFO_[key];
     cvox.ChromeVox.msgs.getMsg(value.msgId);
     cvox.ChromeVox.msgs.getMsg(value.msgId + '_brl');
     assertFalse(/[A-Z]+/.test(value.msgId));
     if (value.earconId)
-      assertNotNullNorUndefined(cvox.AbstractEarcons[value.earconId]);
+      assertNotNullNorUndefined(cvox.Earcon[value.earconId]);
   }
   for (var key in Output.STATE_INFO_) {
     var value = Output.STATE_INFO_[key];
     for (innerKey in value) {
       var innerValue = value[innerKey];
       cvox.ChromeVox.msgs.getMsg(innerValue.msgId);
       cvox.ChromeVox.msgs.getMsg(innerValue.msgId + '_brl');
       assertFalse(/[A-Z]+/.test(innerValue.msgId));
       if (innerValue.earconId)
-        assertNotNullNorUndefined(cvox.AbstractEarcons[innerValue.earconId]);
+        assertNotNullNorUndefined(cvox.Earcon[innerValue.earconId]);
     }
   }
 });