Fix the double-tap to click gesture in touch accessibility mode.

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.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 The entry point for all ChromeVox2 related code for the
  * background page.
  */
 
 goog.provide('Background');
@@ skipping 144 matching lines @@
     'components=UI>accessibility&' +
     'description=';
 
 /**
  * Map from gesture names (AXGesture defined in ui/accessibility/ax_enums.idl)
  *     to commands when in Classic mode.
  * @type {Object<string, string>}
  * @const
  */
 Background.GESTURE_CLASSIC_COMMAND_MAP = {
+  'click': 'forceClickOnCurrentItem',
   'swipeUp1': 'backward',
   'swipeDown1': 'forward',
   'swipeLeft1': 'left',
   'swipeRight1': 'right',
   'swipeUp2': 'jumpToTop',
-  'swipeDown2': 'readFromhere',
+  'swipeDown2': 'readFromHere',
 };
 
 /**
  * Map from gesture names (AXGesture defined in ui/accessibility/ax_enums.idl)
  *     to commands when in Classic mode.
  * @type {Object<string, string>}
  * @const
  */
 Background.GESTURE_NEXT_COMMAND_MAP = {
+  'click': 'forceClickOnCurrentItem',
   'swipeUp1': 'previousLine',
   'swipeDown1': 'nextLine',
   'swipeLeft1': 'previousObject',
   'swipeRight1': 'nextObject',
   'swipeUp2': 'jumpToTop',
   'swipeDown2': 'readFromHere',
 };
 
 Background.prototype = {
   __proto__: ChromeVoxState.prototype,
@@ skipping 934 matching lines @@
     return glob.replace(/[.+^$(){}|[\]\\]/g, '\\$&')
         .replace(/\*/g, '.*')
         .replace(/\?/g, '.');
   }).join('|') + ')$');
 };
 
 /** @type {Background} */
 global.backgroundObj = new Background();
 
 });  // goog.scope