Shorten Closure template notation from Array.<*> to Array<*> in cvox.

chrome/browser/resources/chromeos/chromevox/chromevox/background/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.
 
 // Common external variables when compiling ChromeVox background code
 
 var localStorage = {};
 
 /**
  * @type {Object}
@@ skipping 29 matching lines @@
 chrome.accessibilityPrivate.setAccessibilityEnabled = function(on) {};
 
 /**
  * @param {boolean} on
  */
 chrome.accessibilityPrivate.setNativeAccessibilityEnabled = function(on) {
 };
 
 /**
  * @param {number} tabId
- * @param {function(Array.<!Object>)} callback
+ * @param {function(Array<!Object>)} callback
  */
 chrome.accessibilityPrivate.getAlertsForTab =
     function(tabId, callback) {};
 
 /**
- * @param {Array.<{left: number, top: number, width: number, height: number}>}
+ * @param {Array<{left: number, top: number, width: number, height: number}>}
  *     rects The bounding rects to draw focus ring(s) around, in global
  *     screen coordinates.
  */
 chrome.accessibilityPrivate.setFocusRing = function(rects) {
 };
 
 /** @type ChromeEvent */
 chrome.accessibilityPrivate.onWindowOpened;
 
 /** @type ChromeEvent */
@@ skipping 53 matching lines @@
 /** @type {string} */
 AccessibilityObject.prototype.details.value;
 /** @type {number} */
 AccessibilityObject.prototype.details.selectionStart;
 /** @type {number} */
 AccessibilityObject.prototype.details.selectionEnd;
 /** @type {number} */
 AccessibilityObject.prototype.details.itemCount;
 /** @type {number} */
 AccessibilityObject.prototype.details.itemIndex;