Support role description in automation/ChromeVox

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 754 matching lines @@
       checkSpeechOutput('2|Min 1|Max 10|volume|Spin button',
           [
             {value: 'valueForRange', start: 0, end: 1},
             {value: 'name', start: 15,end: 21},
             {value: new Output.EarconAction('LISTBOX'), start: 15, end: 21},
             {value: 'role', start: 22, end: 33}
           ],
           o);
   });
 });
+
+TEST_F('OutputE2ETest', 'RoleDescription', function() {
+  this.runWithLoadedTree(function(root) {/*!
+    <div aria-label="hi" role="button" aria-roledescription="foo"></div>
+  */}, function(root) {
+    var obj = root.find({role: RoleType.BUTTON});
+    var o = new Output().withSpeech(cursors.Range.fromNode(obj));
+    checkSpeechOutput('hi|foo',
+        [
+          {value: 'name', start: 0, end: 2},
+          {value: new Output.EarconAction('BUTTON'), start: 0, end: 2},
+          {value: 'role', start: 3, end: 6}
+        ],
+      o);
+  });
+});