Make cvox2 feedback more robust when focusing a text field.

chrome/browser/resources/chromeos/chromevox/cvox2/background/background_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.
 
 // Include test fixture.
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js',
              '../../testing/assert_additions.js']);
 
 GEN_INCLUDE(['../../testing/mock_feedback.js']);
 
 /**
  * Test fixture for Background.
  * @constructor
  * @extends {ChromeVoxNextE2ETest}
  */
 function BackgroundTest() {
   ChromeVoxNextE2ETest.call(this);
 }
 
 BackgroundTest.prototype = {
   __proto__: ChromeVoxNextE2ETest.prototype,
 
+  /** @override */
+  setUp: function() {
+    global.backgroundObj.forceChromeVoxNextActive();
+  },
+
   /**
    * @return {!MockFeedback}
    */
   createMockFeedback: function() {
     var mockFeedback = new MockFeedback(this.newCallback(),
                                         this.newCallback.bind(this));
     mockFeedback.install();
     return mockFeedback;
   },
 
@@ skipping 299 matching lines @@
             .call(textField.focus.bind(textField))
             .expectBraille('Edit me ed', {startIndex: 0})
             .call(route.bind(null, 3))
             .expectBraille('Edit me ed', {startIndex: 3})
             .call(function() {
               assertEquals(3, textField.textSelStart);
             });
         mockFeedback.replay();
       });
 });
+
+TEST_F('BackgroundTest', 'FocusInputElement', function() {
+  var mockFeedback = this.createMockFeedback();
+  this.runWithLoadedTree(
+    function() {/*!
+      <input id="name" value="Lancelot">
+      <input id="quest" value="Grail">
+      <input id="color" value="Blue">
+    */},
+    function(rootNode) {
+      var name = rootNode.find({ attributes: { value: 'Lancelot' } });
+      var quest = rootNode.find({ attributes: { value: 'Grail' } });
+      var color = rootNode.find({ attributes: { value: 'Blue' } });
+
+      mockFeedback.call(quest.focus.bind(quest))
+          .expectSpeech('Grail', 'Edit text')
+          .call(color.focus.bind(color))
+          .expectSpeech('Blue', 'Edit text')
+          .call(name.focus.bind(name))
+          .expectNextSpeechUtteranceIsNot('Blue')
+          .expectSpeech('Lancelot', 'Edit text');
+      mockFeedback.replay();
+    }.bind(this));
+});