chromium/chrome/test/data/extensions/api_test/context_menus/simple/one/manifest.json

{
  "name": "Top-level extension 1 with context menu",
  "version": "1.0",
  "manifest_version": 2,
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": ["background.js"]
  }
}