Finish implementing ChromeVox Next active indicator.

chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.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 Definitions for the Chromium extensions API used by ChromeVox.
  *
  * @externs
  */
@@ skipping 417 matching lines @@
 chrome.automation.AutomationNode.prototype.children;
 
 
 /**
  * @type {{top: number, left: number, height: number, width: number}}
  */
 chrome.automation.AutomationNode.prototype.location;
 
 
 /**
+ * @param {number} start
+ * @param {number} end
+ * @return {({top: number, left: number, height: number, width: number})
+ *     |undefined}
+ */
+chrome.automation.AutomationNode.prototype.boundsForRange =
+    function(start, end) {};
+
+
+/**
  * @param {chrome.automation.EventType} eventType
  * @param {function(!chrome.automation.AutomationEvent) : void} callback
  * @param {boolean} capture
  */
 chrome.automation.AutomationNode.prototype.addEventListener =
     function(eventType, callback, capture) {};
 
 
 /**
  * @param {chrome.automation.EventType} eventType
@@ skipping 64 matching lines @@
 
 /**
  * @param {Object} findParams
  */
 chrome.automation.AutomationNode.prototype.find = function(findParams) {};
 
 /**
  * @type {string}
  */
 chrome.automation.AutomationNode.prototype.inputType;