webui: Remove unnecessary </include>s everywhere.

chrome/browser/resources/extensions/extension_commands_overlay.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.
 
-<include src="extension_command_list.js"></include>
+<include src="extension_command_list.js">
 
 cr.define('extensions', function() {
   'use strict';
 
   // The Extension Commands list object that will be used to show the commands
   // on the page.
   var ExtensionCommandList = options.ExtensionCommandList;
 
   /**
    * ExtensionCommandsOverlay class
@@ skipping 52 matching lines @@
       list.classList.add('empty-extension-commands-list');
     else
       list.classList.remove('empty-extension-commands-list');
   }
 
   // Export
   return {
     ExtensionCommandsOverlay: ExtensionCommandsOverlay
   };
 });