Fix race and remove unused features in cryptotoken extension

chrome/browser/resources/cryptotoken/signhelper.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 Provides a "bottom half" helper to assist with raw sign
  * requests.
  */
 'use strict';
 
@@ skipping 19 matching lines @@
  * @interface
  */
 function SignHelperFactory() {}
 
 /**
  * Creates a new sign helper.
  * @param {Countdown} timer Timer after whose expiration the caller is no longer
  *     interested in the result of a sign request.
  * @param {function(number, boolean)} errorCb Called when a sign request fails
  *     with an error code and whether any gnubbies were found.
- * @param {function(SignHelperChallenge, string)} successCb Called with the
- *     signature produced by a successful sign request.
- * @param {(function(number, boolean)|undefined)} opt_progressCb Called with
- *     progress updates to the sign request.
+ * @param {function(SignHelperChallenge, string, string=)} successCb Called with
+ *     the signature produced by a successful sign request.
  * @param {string=} opt_logMsgUrl A URL to post log messages to.
  * @return {SignHelper} The newly created helper.
  */
 SignHelperFactory.prototype.createHelper =
-    function(timer, errorCb, successCb, opt_progressCb, opt_logMsgUrl) {};
+    function(timer, errorCb, successCb, opt_logMsgUrl) {};