dom-ui sync: When hitting the 'Customize' button, retain 'keep everything sync'd state.

chrome/browser/resources/options/sync_setup_overlay.js

 // Copyright (c) 2011 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 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 52 matching lines @@
         return false;
       };
       $('google-option').onchange = $('explicit-option').onchange = function() {
         self.onRadioChange_();
       };
       $('choose-datatypes-cancel').onclick = $('sync-setup-cancel').onclick =
           $('confirm-everything-cancel').onclick = function() {
         self.closeOverlay_();
       };
       $('customize-link').onclick = function() {
-        self.showCustomizePage_(false);
+        self.showCustomizePage_(true);
       };
       $('confirm-everything-ok').onclick = function() {
         self.sendConfiguration_();
       };
       $('use-default-link').onclick = function() {
         self.showSyncEverythingPage_();
       };
       $('cancel-no-button').onclick = function() {
         self.hideCancelWarning_();
         return false;
@@ skipping 584 matching lines @@
 
   SyncSetupOverlay.showSuccessAndSettingUp = function() {
     SyncSetupOverlay.getInstance().showSuccessAndSettingUp_();
   };
 
   // Export
   return {
     SyncSetupOverlay: SyncSetupOverlay
   };
 });