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

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