chromium/chrome/test/data/extensions/api_test/extension_module/cognito_nofile/manifest.json

{
  "name": "chrome.extension",
  "version": "0.1",
  "manifest_version": 2,
  "description": "end-to-end browser test for some chrome.extension API: cognito mode.",
  "background": {
    "scripts": ["test.js"],
    "persistent": true
  }
}