chromium/chrome/test/data/extensions/api_test/developer/hosted_app/manifest.json

{
  "name": "hosted_app",
  "version": "0.1",
  "manifest_version": 2,
  "app": {
    "launch": {
      "web_url": "http://www.google.com"
    }
  },
  "offline_enabled": true,
  "update_url": "http://example.com/update.xml"
}