Noissue - Use includes instead of indexOf

options.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 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 644 matching lines @@
   removeButton.addEventListener("click", () =>
   {
     if (!confirm(i18n.getMessage("global_remove_subscription_warning")))
       return;
 
     removeSubscription(subscription.url);
   }, false);
 
   getPref("additional_subscriptions", additionalSubscriptions =>
   {
-    if (additionalSubscriptions.indexOf(subscription.url) != -1)
+    if (additionalSubscriptions.includes(subscription.url))
       removeButton.style.visibility = "hidden";
   });
 
   let enabled = element.getElementsByClassName("subscriptionEnabled")[0];
   enabled.addEventListener("click", () =>
   {
     subscription.disabled = !subscription.disabled;
     toggleSubscription(subscription.url, true);
   }, false);
 
@@ skipping 59 matching lines @@
       onFilterMessage(message.action, message.args[0]);
       break;
     case "prefs.respond":
       onPrefMessage(message.action, message.args[0]);
       break;
     case "subscriptions.respond":
       onSubscriptionMessage(message.action, message.args[0]);
       break;
   }
 });