Revert of Fix ChromeVox Next compile.

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

Index: chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.js
diff --git a/chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.js b/chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.js
index 701dd7cd0a49c0f4c314818ac6a67c5de5d2627e..763267ab98a071bab86e3bc5b6a8b58654dd8dd2 100644
--- a/chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.js
+++ b/chrome/browser/resources/chromeos/chromevox/common/chrome_extension_externs.js
@@ -957,7 +957,7 @@
 
 
 /** @return {boolean} */
-ChromeEvent.prototype.hasListeners = function() {};
+ChromeEvent.prototype.hasListeners = function(callback) {};
 
 
 /**
@@ -1209,91 +1209,3 @@
  * @type {ChromeEvent}
  */
 chrome.storage.onChanged;
-
-
-/**
- * @const
- */
-chrome.automation = {};
-
-/**
- * @constructor
- */
-chrome.automation.AutomationNode = function() {};
-
-
-/**
- * @type {!Object}
- */
-chrome.automation.AutomationNode.prototype.attributes;
-
-
-/**
- * @return {chrome.automation.AutomationNode}
- */
-chrome.automation.AutomationNode.prototype.firstChild = function() {};
-
-
-/**
- * @return {chrome.automation.AutomationNode}
- */
-chrome.automation.AutomationNode.prototype.lastChild = function() {};
-
-
-/**
- * @return {chrome.automation.AutomationNode}
- */
-chrome.automation.AutomationNode.prototype.nextSibling = function() {};
-
-
-/**
- * @return {chrome.automation.AutomationNode}
- */
-chrome.automation.AutomationNode.prototype.previousSibling = function() {};
-
-
-/**
- * @return {chrome.automation.AutomationNode}
- */
-chrome.automation.AutomationNode.prototype.parent = function() {};
-
-
-/**
- * @param {string} eventType
- * @param {function(chrome.automation.AutomationNode) : void} callback
- * @param {boolean} capture
- */
-chrome.automation.AutomationNode.prototype.addEventListener =
-    function(eventType, callback, capture) {};
-
-
-/**
- * @param {string} eventType
- * @param {function(chrome.automation.AutomationNode) : void} callback
- * @param {boolean} capture
- */
-chrome.automation.AutomationNode.prototype.removeEventListener =
-    function(eventType, callback, capture) {};
-
-
-/**
- * @param {function(chrome.automation.AutomationNode)} callback
- */
-chrome.automation.getDesktop = function(callback) {};
-
-
-/**
- * @param {function(chrome.automation.AutomationNode)} callback
- */
-chrome.automation.getTree = function(callback) {};
-
-/**
- * @const
- */
-chrome.commands = {};
-
-
-/**
- * @type {ChromeEvent}
- */
-chrome.commands.onCommand;