chrome-extensions-samples/samples/printing/main.js

/**
 * Copyright (c) 2013 The Chromium Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 **/

"use strict";

chrome.app.runtime.onLaunched.addListener(function() {
  Printest.application.create();
});