Remove forceLogin flag from sync setup.

chrome/browser/resources/sync_setup_overlay.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.
 
 cr.define('options', function() {
   /** @const */ var OptionsPage = options.OptionsPage;
 
   // Variable to track if a captcha challenge was issued. If this gets set to
   // true, it stays that way until we are told about successful login from
   // the browser.  This means subsequent errors (like invalid password) are
@@ skipping 82 matching lines @@
     showOverlay_: function() {
       OptionsPage.navigateToPage('syncSetup');
     },
 
     closeOverlay_: function() {
       OptionsPage.closeOverlay();
     },
 
     /** @override */
     didShowPage: function() {
-      var forceLogin = document.location.hash == '#forceLogin';
-      var result = JSON.stringify({'forceLogin': forceLogin});
-      chrome.send('SyncSetupAttachHandler', [result]);
+      chrome.send('SyncSetupShowSetupUI');
     },
 
     /** @override */
     didClosePage: function() {
       chrome.send('SyncSetupDidClosePage');
     },
 
     getEncryptionRadioCheckedValue_: function() {
       var f = $('choose-data-types-form');
       for (var i = 0; i < f.encrypt.length; ++i) {
@@ skipping 934 matching lines @@
 
   SyncSetupOverlay.showStopSyncingUI = function() {
     SyncSetupOverlay.getInstance().showStopSyncingUI_();
   };
 
   // Export
   return {
     SyncSetupOverlay: SyncSetupOverlay
   };
 });