Allow chrome.send to pass number, boolean, null and arrays of those

chrome/browser/resources/new_new_tab.js

 // Copyright (c) 2010 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.
 
 // To avoid creating tons of unnecessary nodes. We assume we cannot fit more
 // than this many items in the miniview.
 var MAX_MINIVIEW_ITEMS = 15;
 
 // Extra spacing at the top of the layout.
 var LAYOUT_SPACING_TOP = 25;
@@ skipping 268 matching lines @@
   }
   function clickHandler(e) {
     chrome.send('reopenTab', [String(data.sessionId)]);
     e.preventDefault();
   }
   a.addEventListener('click', clickHandler);
   addClosedMenuEntryWithLink(menu, a);
 }
 
 function saveShownSections() {
-  chrome.send('setShownSections', [String(shownSections)]);
+  chrome.send('setShownSections', [shownSections]);
 }
 
 var LayoutMode = {
   SMALL: 1,
   NORMAL: 2
 };
 
 var layoutMode = useSmallGrid() ? LayoutMode.SMALL : LayoutMode.NORMAL;
 
 function handleWindowResize() {
@@ skipping 1100 matching lines @@
   var promoLink = document.querySelector('#apps-promo-text1 a');
   promoLink.id = 'apps-promo-link';
   promoLink.href = localStrings.getString('web_store_url');
 
   $('apps-promo-hide').addEventListener('click', function() {
     chrome.send('hideAppsPromo', []);
     document.documentElement.classList.remove('apps-promo-visible');
     layoutSections();
   });
 });