[MD] Change appearance of incognito NTP to MD spec.

chrome/browser/resources/ntp4/new_tab.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.
 
 /**
  * @fileoverview New tab page
  * This is the main code for the new tab page used by touch-enabled Chrome
  * browsers.  For now this is still a prototype.
  */
 
@@ skipping 315 matching lines @@
 
     var menu = $('footer-menu-container');
     if (menu.clientWidth > logoImg.width)
       logo.style.WebkitFlex = '0 1 ' + menu.clientWidth + 'px';
     else
       menu.style.WebkitFlex = '0 1 ' + logoImg.width + 'px';
   }
 
   /**
    * Called when the theme has changed.
+   * @param {Object} opt_themeData Not used; only exists to match equivalent
+   *     function in incognito NTP.
    */
-  function themeChanged() {
+  function themeChanged(opt_themeData) {
     $('themecss').href = 'chrome://theme/css/new_tab_theme.css?' + Date.now();
   }
 
   function setBookmarkBarAttached(attached) {
     document.documentElement.setAttribute('bookmarkbarattached', attached);
   }
 
   /**
    * Timeout ID.
    * @type {number}
@@ skipping 301 matching lines @@
     setFaviconDominantColor: setFaviconDominantColor,
     showNotification: showNotification,
     themeChanged: themeChanged,
     updateLogin: updateLogin
   };
 });
 
 document.addEventListener('DOMContentLoaded', ntp.onLoad);
 
 var toCssPx = cr.ui.toCssPx;