Issue 6783 - opt-in to anti circumvention filter list on upgrade

lib/prefs.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 82 matching lines @@
  * @see https://adblockplus.org/en/preferences#subscriptions_exceptionsurl_privacy
  * @type {string}
  */
 defaults.subscriptions_exceptionsurl_privacy = "https://easylist-downloads.adblockplus.org/exceptionrules-privacy-friendly.txt";
 /**
  * @see https://adblockplus.org/en/preferences#subscriptions_antiadblockurl
  * @type {string}
  */
 defaults.subscriptions_antiadblockurl = "https://easylist-downloads.adblockplus.org/antiadblockfilters.txt";
 /**
+ * Used to ensure the anti-circumvention subscription is opted in by default.
+ * @type {boolean}
+ */
+defaults.subscriptions_addedanticv = false;
+/**
  * @see https://adblockplus.org/en/preferences#documentation_link
  * @type {string}
  */
 defaults.documentation_link = "https://adblockplus.org/redirect?link=%LINK%&lang=%LANG%";
 /**
  * @see https://adblockplus.org/en/preferences#notificationdata
  * @type {object}
  */
 defaults.notificationdata = {};
 /**
@@ skipping 269 matching lines @@
           eventEmitter.emit(pref);
         }
       }
     });
   }
 
   Prefs.untilLoaded = Promise.all([localLoaded, managedLoaded]).then(onLoaded);
 }
 
 init();