chrome/test/data/extensions/api_test/printing/background.js

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

chrome.app.runtime.onLaunched.addListener(function() {
  chrome.test.getConfig(config => {
    chrome.app.window.create(config.customArg, {}, function() {});
  });
});