[cleanup] Removed embedded sign-in support code from OOBE.

chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment.js

 // Copyright (c) 2012 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.
 
 login.createScreen('OAuthEnrollmentScreen', 'oauth-enrollment', function() {
   /** @const */ var STEP_SIGNIN = 'signin';
   /** @const */ var STEP_WORKING = 'working';
   /** @const */ var STEP_ERROR = 'error';
   /** @const */ var STEP_SUCCESS = 'success';
 
@@ skipping 15 matching lines @@
      * Gaia auth params for sign in frame.
      */
     signInParams_: {},
 
     /**
      * The current step. This is the last value passed to showStep().
      */
     currentStep_: null,
 
     /**
-     * Opaque token used to correlate request and response while retrieving the
-     * authenticated user's e-mail address from GAIA.
-     */
-    attemptToken_: null,

[dzhioev (left Google), 2015/03/18 20:38:27]

This one is unused.

-
-    /**
      * The help topic to show when the user clicks the learn more link.
      */
     learnMoreHelpTopicID_: null,
 
     /**
      * We block esc, back button and cancel button until gaia is loaded to
      * prevent multiple cancel events.
      */
     isCancelDisabled_: null,
 
@@ skipping 243 matching lines @@
      * Opens the learn more help topic.
      */
     launchLearnMoreHelp_: function() {
       if (this.learnMoreHelpTopicID_) {
         chrome.send('launchHelpApp', [this.learnMoreHelpTopicID_]);
       }
     }
   };
 });