chromium/chrome/test/data/extensions/platform_apps/messaging/app1/manifest.json

{
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQChIkos4QMuz7xmtnVIPCRZmcKzLyyvChW508KvpVWhdJZjnMShxVqH5QwrEzwtRhK1bTX/Y+7kmKGb9z49O//4KY/gFZQyiRNDnqv85L7fz7ceobLozwQWkhTFafYS39VMs00G0FvgQvEM1gO/Kg3eWVTFRUJCHHrMkO1De2Xd+wIDAQAB",
  "manifest_version": 2,
  "name": "Messaging Test App 1",
  "version": "0.5",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  }
}