Issue 4084 - Do not use @@bidi_dir directly in adblockplusui

messageResponder.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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 156 matching lines @@
 
     if (message.what == "localeInfo")
     {
       let bidiDir;
       if ("chromeRegistry" in Utils)
       {
         let isRtl = Utils.chromeRegistry.isLocaleRTL("adblockplus");
         bidiDir = isRtl ? "rtl" : "ltr";
       }
       else
-        bidiDir = ext.i18n.getMessage("@@bidi_dir");
+        bidiDir = Utils.readingDirection;
 
       return {locale: Utils.appLocale, bidiDir};
     }
 
     if (message.what == "features")
     {
       return {
         devToolsPanel: info.platform == "chromium"
       };
     }
@@ skipping 236 matching lines @@
     if (message.url)
       subscriptions = [Subscription.fromURL(message.url)];
 
     for (let subscription of subscriptions)
     {
       if (subscription instanceof DownloadableSubscription)
         Synchronizer.execute(subscription, true);
     }
   });
 })(this);