chromium/chrome/test/data/extensions/api_test/context_menus/add_from_multiple_contexts/manifest.json

{
  "name": "Test context menu creation from multiple extension pages.",
  "version": "1.0",
  "manifest_version": 2,
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": ["background.js"],
    "persistent": true
  }
}