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

{
  "name": "webNavigation",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Tests the webNavigation API events with the back forward cache.",
  "background": {
    "page": "test_forwardBack.html"
  },
  "permissions": ["webNavigation", "tabs"]
}