chromium/chrome/test/data/extensions/api_test/webnavigation/crossProcessIframe/manifest.json

{
  "name": "webNavigation",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Tests the webNavigation API events - crossProcessIframe.",
  "background": {
    "scripts": ["test_crossProcessIframe.js"],
    "persistent": true
  },
  "permissions": ["webNavigation", "tabs"]
}