chromium/chrome/test/data/extensions/ash_extension_keeplist/simple_app/manifest.json

{
  "name": "simple app",
  // Extension ID: knldjmfmopnpolahpmmgbagdohdnhkik
  "manifest_version": 2,
  "version": "1",
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDcBHwzDvyBQ6bDppkIs9MP4ksKqCMyXQ/A52JivHZKh4YO/9vJsT3oaYhSpDCE9RPocOEQvwsHsFReW2nUEc6OLLyoCFFxIb7KkLGsmfakkut/fFdNJYh0xOTbSN8YvLWcqph09XAY2Y/f0AL7vfO1cuCqtkMt8hFrBGWxDdf9CQIDAQAB",
  "app": {
    "background": {
      "scripts": ["test.js"]
    }
  }
}