chromium/chrome/test/data/extensions/platform_apps/window_controls/buttons/manifest.json

{
  "name": "Window Controls Demo!",
  "description": "Window Controls Demo!",
  "version": "0.1",
  "manifest_version": 2,
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": []
}