Issue 5593 - Stop updating the stats in the popup in real-time

stats.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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 /* global i18n, getPref, togglePref */
 
 "use strict";
 
 (function()
 {
-  const {require} = ext.backgroundPage.getWindow();
-
-  const {FilterNotifier} = require("filterNotifier");
-
   let currentTab;
   const shareURL = "https://adblockplus.org/";
 
   let messageMark = {};
   let shareLinks = {
     facebook: ["https://www.facebook.com/dialog/feed", {
       app_id: "475542399197328",
       link: shareURL,
       redirect_uri: "https://www.facebook.com/",
       ref: "adcounter",
@@ skipping 46 matching lines @@
     document.querySelector("label[for='show-iconnumber']").addEventListener(
       "click", toggleIconNumber, false
     );
 
     // Update stats
     chrome.tabs.query({active: true, lastFocusedWindow: true}, tabs =>
     {
       currentTab = tabs[0];
       updateStats();
 
-      FilterNotifier.on("filter.hitCount", updateStats);
-
       document.getElementById("stats-container").removeAttribute("hidden");
     });
   }
 
-  function onUnload()
-  {
-    FilterNotifier.off("filter.hitCount", updateStats);
-  }
-
   function updateStats()
   {
     let statsPage = document.getElementById("stats-page");
     chrome.runtime.sendMessage({
       type: "stats.getBlockedPerPage",
       tab: currentTab
     },
     blockedPage =>
     {
       i18n.setElementText(statsPage, "stats_label_page",
@@ skipping 26 matching lines @@
   {
     togglePref("show_statsinicon", showStatsInIcon =>
     {
       document.getElementById("show-iconnumber").setAttribute(
         "aria-checked", showStatsInIcon
       );
     });
   }
 
   document.addEventListener("DOMContentLoaded", onLoad, false);
-  window.addEventListener("unload", onUnload, false);
 }());