Issue 4057 - Further speedup ElemHide.getSelectorsforDomain

lib/cssRules.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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
@@ skipping 50 matching lines @@
    * @param {String} domain
    * @return {CSSPropertyFilter[]}
    */
   getRulesForDomain: function(domain)
   {
     let result = [];
     let keys = Object.getOwnPropertyNames(filters);
     for (let key of keys)
     {
       let filter = Filter.fromText(key);
-      if (filter.isActiveOnDomain(domain) && !ElemHide.getException(filter, domain))
+      if (filter.isActiveOnDomain(domain) &&
+          !ElemHide.getException(filter.selector, domain))
         result.push(filter);
     }
     return result;
   }
 };