chromium/chrome/test/data/extensions/api_test/preference/session_only_incognito/manifest.json

{
  "name" : "Preference API Test Extension (Session-only Incognito)",
  "version" : "0.1",
  "manifest_version": 2,
  "description" : "Preference API Test Extension (Session-only Incognito)",
  "permissions": [ "privacy", "tabs" ],
  "background": {
    "scripts": ["test.js"],
    "persistent": false
  }
}