chromium/chrome/test/data/extensions/api_test/notifications/api/csp/manifest.json

{
  "name": "chrome.notifications",
  "manifest_version": 2,
  "version": "0.1",
  "description": "chrome.notifications API CSP",
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "permissions": [
    "notifications"
  ]
}