chromium/chrome/test/data/extensions/app2/manifest.json

{
  "name": "Test App 2",
  "version": "1",
  "manifest_version": 2,
  "permissions": ["unlimited_storage"],
  "app": {
    "urls": [
      "http://www.example.com/path3",
      "http://www.example.com/path4"
    ],
    "launch": {
      "web_url": "http://www.example.com/path4/foo.html"
    }
  }
}