chromium/chrome/test/data/extensions/api_test/service_worker/worker_based_background/browser_action/manifest.json

{
  "name": "browserAction + user gesture",
  "description": "Demonstrates usage and features of user gesture",
  "version": "1.0",
  "manifest_version": 2,
  "background": {"service_worker": "background.js"},
  "browser_action": {}
}