Fix some JS style nits.

chrome/browser/resources/chromeos/braille_ime/braille_ime_unittest.gtestjs

 // 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 Unit test for the Braille IME.
  */
 
 /**
  * Mock Chrome event supporting one listener.
@@ skipping 27 matching lines @@
 };
 
 /**
  * Mock port that supports the {@code onMessage} and {@code onDisconnect}
  * events as well as {@code postMessage}.
  * @constructor.
  */
 function MockPort() {
   this.onMessage = new MockEvent();
   this.onDisconnect = new MockEvent();
-  /** @type {Array.<Object>} */
+  /** @type {Array<Object>} */
   this.messages = [];
 }
 
 MockPort.prototype = {
   /**
    * Stores {@code message} in this object.
    * @param {Object} message Message to store.
    */
   postMessage: function(message) {
     this.messages.push(message);
@@ skipping 243 matching lines @@
   sendSetUncommitted(' there!');
   sendCommitUncommitted(CONTEXT_ID + 1);
   assertEquals('Hello', text);
 
   sendSetUncommitted(' you!');
   assertFalse(this.sendKeyDown('KeyY'));
   assertEquals('Hello you!', text);
   assertFalse(this.sendKeyUp('KeyY'));
   assertEquals('Hello you!', text);
 });