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

{
  "name": "Lazy BG views test",
  "description": "Test that lazy BG stays alive until the override new-tab-page is closed (and no longer).",
  "version": "1",
  "manifest_version": 2,
  "permissions": ["tabs"],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  }
}