Issue 6887 - add Chrome to "npm test"

test/browsers/firefox.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 14 matching lines @@
 const {ensureFirefox} = require("../../adblockpluscore/test/runners/" +
                                 "firefox_download");
 
 exports.platform = "gecko";
 
 exports.ensureBrowser = function()
 {
   return ensureFirefox(FIREFOX_VERSION);
 };
 
-exports.getDriver = function(browserBinary, devenvPathAbsolute)
+exports.getDriver = function(browserBinary, devenvPath)
 {
   let binary = new firefox.Binary(browserBinary);
   binary.addArguments("-headless");
 
   let driver = new webdriver.Builder()
     .forBrowser("firefox")
     .setFirefoxOptions(new firefox.Options().setBinary(binary))
     .build();
 
   let cmd = new Command("moz-install-web-ext")
-    .setParameter("path", devenvPathAbsolute)
+    .setParameter("path", devenvPath)
     .setParameter("temporary", true);
 
   driver.getExecutor().defineCommand(
     cmd.getName(), "POST",
     "/session/:sessionId/moz/addon/install"
   );
-  driver.schedule(cmd, `installWebExt(${devenvPathAbsolute})`);
+  driver.schedule(cmd, `installWebExt(${devenvPath})`);
 
   return driver;
 };