chromium/chrome/test/data/extensions/platform_apps/windows_api_set_icon/background.js

// Copyright 2012 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('test.html', {}, function(win) {
    chrome.test.sendMessage('ready', function() {
      win.setIcon("icon.png");
    });
  });
});