chromium/chrome/test/data/extensions/api_test/permissions/host_subsets/manifest.json

{
  "name": "host_subsets",
  "description": "Tests requesting, querying, and removing host permissions that are a subset of the optional permissions.",
  "version": "1",
  "background": {
    "scripts": ["background.js"],
    "persistent": true
  },
  "optional_permissions": ["http://*/*", "ftp://ftp.example.com/*"],
  "manifest_version": 2
}