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

{
  "name": "Lazy BG request test",
  "description": "Test that lazy BG page stays alive until all requests are done",
  "version": "1",
  "manifest_version": 2,
  "permissions": ["tabs"],
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  }
}