Ensure WebView notifies desktop automation on creation, destruction, and change

chrome/browser/resources/chromeos/chromevox/common/editable_text_base.js

 // Copyright 2015 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.
 
 goog.provide('cvox.ChromeVoxEditableTextBase');
 goog.provide('cvox.TextChangeEvent');
 goog.provide('cvox.TypingEcho');
 
+goog.require('cvox.AbstractTts');
 goog.require('cvox.ChromeVox');
 goog.require('cvox.TtsInterface');
 goog.require('goog.i18n.MessageFormat');
 
 
 /**
  * @fileoverview Generalized logic for providing spoken feedback when editing
  * text fields, both single and multiline fields.
  *
  * {@code ChromeVoxEditableTextBase} is a generalized class that takes the
@@ skipping 683 matching lines @@
 
 /**
  * Moves the cursor backward by one paragraph.
  * @return {boolean} True if the action was handled.
  */
 cvox.ChromeVoxEditableTextBase.prototype.moveCursorToPreviousParagraph =
     function() { return false; };
 
 
 /******************************************/