added hook function to appIntegration to handle function-overwrites from other extensions

lib/appIntegration.js

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 let {hook} = require("hooks");
 let functionHooks = new WeakMap();
 
 exports.removeFromWindow = function(window)
 {
   if (functionHooks.has(window))
@@ skipping 106 matching lines @@
     };
 
     let basicRemove = exports.removeFromWindow;
     exports.removeFromWindow = function(window)
     {
       basicRemove(window);
 
       if (eventListeners.has(window))
       {
         let eventListener = eventListeners.get(window);
         eventListener.element.removeEventListener("command", eventListener.listener, true);

[Wladimir Palant, 2012/09/28 09:35:19]

Taking over comment from previous review:

eventListeners.delete(window)?

+        eventListeners.delete(window);
       }
     };
 
     exports.openInfobar = function(window, id, message, buttons, persistence)
     {
       let browser = exports.getBrowser(window);
       let infobar = browser.getNotificationBox();
       let notif = infobar.getNotificationWithValue(id);
 
       if (notif)
@@ skipping 147 matching lines @@
     };
 
     break;
   }
   default:
   {
     exports.isKnownWindow = function(window) false;
     break;
   }
 }