chrome/test/data/extensions/api_test/webstore_private/app/manifest.json

{
  "name": "Test App",
  "manifest_version": 2,
  "version": "0.5",
  "app": {
    "urls": [ "http://www.testapp.com" ],
    "launch": { "web_url": "http://www.testapp.com" }
  },
  "icons": { "128": "icon.png" }
}