chromium/chrome/test/data/extensions/api_test/lazy_background_page/event_page_with_web_iframe/manifest.json

{
  "name": "Event page with web iframe",
  "version": "1.0",
  "background": {
    "page": "event_page.html",
    "persistent": false
  },
  "permissions": [
    "activeTab"
  ],
  "manifest_version": 2
}