Issue 1602 - Use ES6 generators instead of legacy generators

lib/elemHide.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 264 matching lines @@
           }
         }
 
         FilterNotifier.triggerListeners("elemhideupdate");
       }
     }.bind(this));
 
     this._applying = true;
   },
 
-  _generateCSSContent: function()
+  _generateCSSContent: function*()
   {
     // Grouping selectors by domains
     let domains = Object.create(null);
     let hasFilters = false;
     for (let key in filterByKey)
     {
       let filter = filterByKey[key];
       let domain = filter.selectorDomain || "";
 
       let list;
@@ skipping 87 matching lines @@
       let filter = filterByKey[key];
       if (specificOnly && (!filter.domains || filter.domains[""]))
         continue;
 
       if (filter.isActiveOnDomain(domain) && !this.getException(filter, domain))
         result.push(filter.selector);
     }
     return result;
   }
 };