Revert of Various changes required to support ChromeVox Next to read Views and Windows.

chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_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 ChromeVox utilities for the automation extension API.
  */
 
 goog.provide('AutomationUtil');
 goog.provide('AutomationUtil.Dir');
@@ skipping 163 matching lines @@
  * do not.
  * @param {!Array.<AutomationNode>} ancestorsA
  * @param {!Array.<AutomationNode>} ancestorsB
  * @return {number}
  */
 AutomationUtil.getDivergence = function(ancestorsA, ancestorsB) {
   for (var i = 0; i < ancestorsA.length; i++) {
     if (ancestorsA[i] !== ancestorsB[i])
       return i;
   }
-  if (ancestorsA.length == ancestorsB.length)
-    return -1;
-  return ancestorsA.length;
+  return -1;
 };
 
 /**
  * Returns ancestors of |node| that are not also ancestors of |prevNode|.
  * @param {!AutomationNode} prevNode
  * @param {!AutomationNode} node
  * @return {!Array<AutomationNode>}
  */
 AutomationUtil.getUniqueAncestors = function(prevNode, node) {
   var prevAncestors = AutomationUtil.getAncestors(prevNode);
@@ skipping 23 matching lines @@
 
   // One of the nodes is an ancestor of the other. Don't distinguish and just
   // consider it Dir.FORWARD.
   if (!divA || !divB || divA.parent === nodeB || divB.parent === nodeA)
     return Dir.FORWARD;
 
   return divA.indexInParent <= divB.indexInParent ? Dir.FORWARD : Dir.BACKWARD;
 };
 
 });  // goog.scope