Revert of Make ChromeVox Next the default ChromeVox experience

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

 // Copyright 2015 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 editing tests.
  * @constructor
  * @extends {ChromeVoxNextE2ETest}
  */
 function EditingTest() {
   ChromeVoxNextE2ETest.call(this);
   window.RoleType = chrome.automation.RoleType;
 }
 
 EditingTest.prototype = {
   __proto__: ChromeVoxNextE2ETest.prototype,
 
+  /** @override */
+  setUp: function() {
+    ChromeVoxState.instance.toggleNext(true);
+  },
+
   /**
    * @return {!MockFeedback}
    */
   createMockFeedback: function() {
     var mockFeedback = new MockFeedback(this.newCallback(),
                                         this.newCallback.bind(this));
     mockFeedback.install();
     return mockFeedback;
   },
 
@@ skipping 90 matching lines @@
       mockFeedback
           .expectSpeech('text1', 'Edit text')
           .expectBraille('text1 ed', {startIndex: 0, endIndex: 0})
           .call(input.setSelection.bind(input, 5, 5))
           .expectBraille('text2 ed', {startIndex: 5, endIndex: 5})
           .expectSpeech('text2');
 
       mockFeedback.replay();
     });
 });