Update markup for import data markup to work well with uber page.

chrome/browser/resources/options2/browser_options.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() {
   var OptionsPage = options.OptionsPage;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
 
   //
@@ skipping 211 matching lines @@
           };
         }
 
         $('manage-accounts-button').onclick = function(event) {
           OptionsPage.navigateToPage('accounts');
           chrome.send('coreOptionsUserMetricsAction',
               ['Options_ManageAccounts']);
         };
       } else {
         $('import-data').onclick = function(event) {
-          // Make sure that any previous import success message is hidden, and
-          // we're showing the UI to import further data.
-          $('import-data-configure').hidden = false;
-          $('import-data-success').hidden = true;
-          OptionsPage.navigateToPage('importData');
+          ImportDataOverlay.show();
           chrome.send('coreOptionsUserMetricsAction', ['Import_ShowDlg']);
         };
 
         if ($('themes-GTK-button')) {
           $('themes-GTK-button').onclick = function(event) {
             chrome.send('themesSetGTK');
           };
         }
       }
 
@@ skipping 1034 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });