src/chrome/test/data/extensions/platform_apps/optional_permission_request/manifest.json

   1 {
   2   "name": "Platform App Test: optional permission request test",
   3   "version": "1",
   4   "app": {
   5     "background": {
   6       "scripts": ["test.js"]
   7     }
   8   },
   9   "optional_permissions": [
  10     "serial"
  11   ]
  12 }