Issue 6985 - Running npm test fails on Windows for adblockpluschrome

test/browsers/chromium.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/>.
  */
 
 "use strict";
 
 const webdriver = require("selenium-webdriver");
 const chrome = require("selenium-webdriver/chrome");
 const {ensureChromium} = require("../../adblockpluscore/test/runners/" +
                                 "chromium_download");
 
+// We need to require the chromedriver,
+// otherwise on Windows the chromedriver path is not added to process.env.PATH.
+require("chromedriver");
+
 exports.platform = "chrome";
 exports.ensureBrowser = ensureChromium;
 
 // The Chromium version is a build number, quite obscure.
 // Chromium 63.0.3239.x is 508578
 // Chromium 65.0.3325.0 is 530368
 // We currently want Chromiun 63, as we still support it and that's the
 // loweset version that supports WebDriver.
 exports.oldestCompatibleVersion = 508578;
 
 exports.getDriver = function(browserBinary, devenvPath)
 {
   let options = new chrome.Options()
     .setChromeBinaryPath(browserBinary)
     .addArguments("--no-sandbox")
     .addArguments(`load-extension=${devenvPath}`);
 
   return new webdriver.Builder()
     .forBrowser("chrome")
     .setChromeOptions(options)
     .build();
 };