Fix JavaScript style in ntp4

chrome/browser/resources/ntp4/page_switcher.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 Page switcher
  * This is the class for the left and right navigation arrows that switch
  * between pages.
  */
 cr.define('ntp4', function() {
@@ skipping 98 matching lines @@
       if (this.dragNavTimeout_) {
         window.clearTimeout(this.dragNavTimeout_);
         this.dragNavTimeout_ = null;
       }
     },
 
   };
 
   return {
     initializePageSwitcher: PageSwitcher.template.decorate
-  }
+  };
 });