Refactored the abstraction layer to address prerendered pages on Safari caused by leaky abstraction

popup.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
- * Copyright (C) 2006-2013 Eyeo GmbH
+ * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 var backgroundPage = ext.backgroundPage.getWindow();
-var imports = ["require", "extractHostFromURL", "refreshIconAndContextMenu", "openOptions"];
+var imports = ["require", "extractHostFromURL", "openOptions"];
 for (var i = 0; i < imports.length; i++)
   window[imports[i]] = backgroundPage[imports[i]];
 
 var Filter = require("filterClasses").Filter;
 var FilterStorage = require("filterStorage").FilterStorage;
 var Prefs = require("prefs").Prefs;
 var isWhitelisted = require("whitelisting").isWhitelisted;
 
 var page = null;
 
@@ skipping 66 matching lines @@
     // Remove any exception rules applying to this URL
     var filter = isWhitelisted(page.url);
     while (filter)
     {
       FilterStorage.removeFilter(filter);
       if (filter.subscriptions.length)
         filter.disabled = true;
       filter = isWhitelisted(page.url);
     }
   }
-
-  refreshIconAndContextMenu(page);
 }
 
 function activateClickHide()
 {
   document.body.classList.add("clickhide-active");
   page.sendMessage({type: "clickhide-activate"});
 
   // Close the popup after a few seconds, so user doesn't have to
   activateClickHide.timeout = window.setTimeout(ext.closePopup, 5000);
 }
 
 function cancelClickHide()
 {
   if (activateClickHide.timeout)
   {
     window.clearTimeout(activateClickHide.timeout);
     activateClickHide.timeout = null;
   }
   document.body.classList.remove("clickhide-active");
   page.sendMessage({type: "clickhide-deactivate"});
 }
 
 function toggleCollapse(event)
 {
   var collapser = event.currentTarget;
   Prefs[collapser.dataset.option] = !Prefs[collapser.dataset.option];
   collapser.parentNode.classList.toggle("collapsed");
 }