Fix race and remove unused features in cryptotoken extension

chrome/browser/resources/cryptotoken/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 U2F gnubbyd background page
  */
 
 'use strict';
 
@@ skipping 13 matching lines @@
  * @param {boolean} toleratesMultipleResponses Whether the web page can handle
  *     multiple responses given to its sendResponse callback.
  * @param {Object} request Request object
  * @param {MessageSender} sender Sender frame
  * @param {Function} sendResponse Response callback
  * @return {?Closeable} Optional handler object that should be closed when port
  *     closes
  */
 function handleWebPageRequest(toleratesMultipleResponses, request, sender,
     sendResponse) {
-  var enforceAppIdValid = true;
   switch (request.type) {
     case GnubbyMsgTypes.ENROLL_WEB_REQUEST:
       return handleEnrollRequest(ENROLL_HELPER_FACTORY, sender, request,
-          enforceAppIdValid, sendResponse, toleratesMultipleResponses);
+          sendResponse, toleratesMultipleResponses);
 
     case GnubbyMsgTypes.SIGN_WEB_REQUEST:
       return handleSignRequest(SIGN_HELPER_FACTORY, sender, request,
-          enforceAppIdValid, sendResponse, toleratesMultipleResponses);
+          sendResponse, toleratesMultipleResponses);
 
     default:
       var response = formatWebPageResponse(
           GnubbyMsgTypes.ENROLL_WEB_REPLY, GnubbyCodeTypes.BAD_REQUEST);
       sendResponse(response);
       return null;
   }
 }
 
 // Message handler for requests coming from web pages.
@@ skipping 24 matching lines @@
           response['requestId'] = request['requestId'];
           port.postMessage(response);
         });
   });
   port.onDisconnect.addListener(function() {
     if (closeable) {
       closeable.close();
     }
   });
 });