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

remoting/tools/javascript_key_tester/chord_tracker.js

 /* Copyright (c) 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.
  */
 
 /**
  * @constructor
  * @param {HTMLElement} parentDiv
  */
 var ChordTracker = function(parentDiv) {
   /** @type {HTMLElement} */
   this.parentDiv_ = parentDiv;
   /** @type {HTMLElement} */
   this.currentDiv_ = null;
-  /** @type {Object.<HTMLElement>} */
+  /** @type {Object<HTMLElement>} */
   this.pressedKeys_ = {};
 };
 
 /**
  * @param {string} code The PNaCl "code" string.
  * @param {string} title
  * @return {void}
  */
 ChordTracker.prototype.addKeyUpEvent = function(code, title) {
   var span = this.addSpanElement_('key-up', code, title);
@@ skipping 81 matching lines @@
 /**
  * @return {boolean} True if there are any keys pressed down.
  * @private
  */
 ChordTracker.prototype.keysPressed_ = function() {
   for (var property in this.pressedKeys_) {
     return true;
   }
   return false;
 };