chromium/chrome/test/data/extensions/api_test/tabs/tab_opener_id/manifest.json

{
  "name": "foo",
  "description": "foo",
  "version": "0.1",
  "manifest_version": 2,
  "permissions": ["tabs"],
  "background": {
    "persistent": true,
    "scripts": ["background.js"]
  }
}