chromium/chrome/test/data/extensions/trivial_platform_app/app/manifest.json

{
  "name": "Trivial Test Platform App",
  "version": "1.0",
  "manifest_version": 2,
  "description": "The minimal app for testing purposes.",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  }
}