Refactorings to reduce dependencies in ChromeVox 2.

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');
 goog.provide('global');
 
 goog.require('AutomationPredicate');
 goog.require('AutomationUtil');
 goog.require('Output');
 goog.require('Output.EventType');
 goog.require('cursors.Cursor');
 goog.require('cvox.ChromeVoxEditableTextBase');
 goog.require('cvox.TabsApiHandler');
 
-// Define types here due to editable_text.js's implicit dependency with
-// ChromeVoxEventWatcher.
-/** @type {Object} */
-cvox.ChromeVoxEventWatcher;
-/** @type {function(boolean)} */
-cvox.ChromeVoxEventWatcher.handleTextChanged;
-/** @type {function()} */
-cvox.ChromeVoxEventWatcher.setUpTextHandler;
-
 goog.scope(function() {
 var AutomationNode = chrome.automation.AutomationNode;
 var Dir = AutomationUtil.Dir;
 var EventType = chrome.automation.EventType;
 
 /**
  * ChromeVox2 background page.
  * @constructor
  */
 Background = function() {
@@ skipping 361 matching lines @@
         }.bind(this));
       }
     }.bind(this));
   }
 };
 
 /** @type {Background} */
 global.backgroundObj = new Background();
 
 });  // goog.scope