chromium/ppapi/tests/extensions/packaged_app/manifest.json

{
  "manifest_version": 2,
  "name": "packaged_app_test",
  "version": "0.1",
  "description": "Packaged App test for Pepper",
  "app": {
    "background": {
      "scripts": [ "main.js" ]
    }
  }
}