[Sync] Fix disappearing passphrase box in 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;
 
   // True if the synced account uses a custom passphrase.
   var usePassphrase_ = false;
 
@@ skipping 598 matching lines @@
      * Displays the advanced sync setting dialog, and pre-selects either the
      * "Sync everything" or the "Choose what to sync" drop-down menu item.
      * @param {cr.DataTypeSelection} index Index of item to pre-select.
      * @private
      */
     showCustomizePage_: function(args, index) {
       $('confirm-sync-preferences').hidden = true;
       $('customize-sync-preferences').hidden = false;
 
       $('sync-custom-passphrase-container').hidden = false;
-      $('sync-custom-passphrase').hidden = true;
       $('sync-new-encryption-section-container').hidden = false;
       $('customize-sync-encryption-new').hidden = false;
 
       $('sync-existing-passphrase-container').hidden = true;
 
       $('sync-select-datatypes').selectedIndex = index;
       this.setDataTypeCheckboxesEnabled_(
           index == DataTypeSelection.CHOOSE_WHAT_TO_SYNC);
 
       // The passphrase input may need to take over focus from the OK button, so
@@ skipping 167 matching lines @@
 
   SyncSetupOverlay.showStopSyncingUI = function() {
     SyncSetupOverlay.getInstance().showStopSyncingUI_();
   };
 
   // Export
   return {
     SyncSetupOverlay: SyncSetupOverlay
   };
 });