chromium/chrome/test/data/extensions/api_test/webrequest_clients_google_com/manifest.json

{
  "name": "Count requests to client1.google.com",
  "description": "Count requests to client1.google.com",
  "manifest_version": 2,
  "permissions": ["webRequest", "<all_urls>"],
  "version": "0.1",
  "background": {
    "scripts": ["background.js"],
    "persistent": true
  }
}