chromium/chrome/test/data/extensions/platform_apps/sandboxed_local_file/manifest.json

{
  "name": "Platform App Test: Check window.create() doesn't give access to a sandboxed page.",
  "manifest_version": 2,
  "version": "1",
  "app": {
    "background": {
      "scripts": ["test.js"]
    }
  },
  "sandbox": {
    "pages": [
      "main.html"
    ]
  }
}