chromium/chrome/test/data/extensions/permissions/platform_app_all_urls.json

{
  "name": "Platform app <all_urls>",
  "manifest_version": 2,
  "version": "1.0",
  "app": {
    "background": {
      "scripts": ["doesnt_exist.js"]
    }
  },
  "permissions": ["<all_urls>"]
}