Allow drag-and-drop of zipped extensions on chrome://extensions

chrome/browser/resources/extensions/extensions.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="../uber/uber_utils.js"></include>
 <include src="extension_code.js"></include>
 <include src="extension_commands_overlay.js"></include>
 <include src="extension_focus_manager.js"></include>
 <include src="extension_list.js"></include>
 <include src="pack_extension_overlay.js"></include>
@@ skipping 48 matching lines @@
       // its item entry.
       for (var i = 0; i < e.dataTransfer.items.length; ++i) {
         if (e.dataTransfer.items[i].kind == 'file' &&
             e.dataTransfer.items[i].webkitGetAsEntry().isDirectory) {
           toSend = 'installDroppedDirectory';
           break;
         }
       }
       // Only process files that look like extensions. Other files should
       // navigate the browser normally.
-      if (!toSend && /\.(crx|user\.js)$/i.test(e.dataTransfer.files[0].name))
+      if (!toSend &&
+          /\.(crx|user\.js|zip)$/i.test(e.dataTransfer.files[0].name)) {
         toSend = 'installDroppedFile';
+      }
 
       if (toSend) {
         e.preventDefault();
         chrome.send(toSend);
       }
     }
   };
 
   /**
    * ExtensionSettings class
@@ skipping 353 matching lines @@
 
   // Export
   return {
     ExtensionSettings: ExtensionSettings
   };
 });
 
 window.addEventListener('load', function(e) {
   extensions.ExtensionSettings.getInstance().initialize();
 });