Issue 4592 - Adapt messaging code for the new element hiding emulation filters

background.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 297 matching lines @@
       {
         var blocked = params.blockedURLs.split(",");
         if (blocked.indexOf(url) >= 0)
           return new modules.filterClasses.BlockingFilter();
         else
           return null;
       }
     }
   };
 
-  modules.cssRules = {
-    CSSRules: {
+  modules.elemHideEmulation = {
+    ElemHideEmulation: {
       getRulesForDomain: function(domain) { }
     }
   };
 
   modules.filterNotifier = {
     FilterNotifier: new EventEmitter()
   };
 
   modules.info = {
     platform: "gecko",
@@ skipping 150 matching lines @@
 
   if (params.safariContentBlocker)
   {
     global.safari = {
       extension: {
         setContentBlocker: function() {}
       }
     };
   }
 })(this);