chromium/chrome/test/data/extensions/api_test/alarms/count/manifest.json

{
  "background": {
   "scripts": ["background.js"],
   "persistent": false
  },
  "description": "An extension installs alarms to test a histogram.",
  "manifest_version": 2,
  "name": "Alarm Count Test Extension",
  "version": "0.1.1",
  "permissions": [
    "alarms"
  ]
}