chromium/chrome/test/data/chromeos/demo_app/js/background.js

// Copyright 2014 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.app.window.create('html/main.html', {'state': 'fullscreen'});
});