chromium/chrome/test/data/extensions/context_menus/top_level/single1/manifest.json

{
  "name": "Top Level Context Menus Extension #1",
  "version": "1",
  "manifest_version": 2,
  "permissions": [ "contextMenus" ],
  "background": {
    "persistent": false,
    "scripts": [ "background.js" ]
  }
}