chromium/chrome/test/data/extensions/api_test/gcm/functions/send_message_data/manifest.json

{
  "manifest_version": 2,
  "name": "Test GCM App",
  "version": "1.0",
  "description": "Tests GCM API",
  "background": {
    "persistent": false,
    "scripts": ["send_message_data.js"]
  },
  "permissions": ["gcm"]
}