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

{
  "name": "chrome.contextMenus",
  "version": "0.1",
  "manifest_version": 2,
  "description": "Test count of menu items created.",
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "permissions": ["contextMenus"]
}