Use multiline attribute to check for IA2_STATE_MULTILINE.

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 1359 matching lines @@
   splitter: 'splitter',
   staticText: 'staticText',
   status: 'status',
   switch: 'switch',
   tabGroup: 'tabGroup',
   tabList: 'tabList',
   tabPanel: 'tabPanel',
   tab: 'tab',
   tableHeaderContainer: 'tableHeaderContainer',
   table: 'table',
-  textArea: 'textArea',
   textField: 'textField',
   time: 'time',
   timer: 'timer',
   titleBar: 'titleBar',
   toggleButton: 'toggleButton',
   toolbar: 'toolbar',
   treeGrid: 'treeGrid',
   treeItem: 'treeItem',
   tree: 'tree',
   unknown: 'unknown',
@@ skipping 346 matching lines @@
 /**
  * @const
  */
 chrome.commands = {};
 
 
 /**
  * @type {ChromeEvent}
  */
 chrome.commands.onCommand;