chromium/extensions/test/data/app_view/apitest/skeleton/manifest.json

{
  "manifest_version": 2,
  "name": "skeleton",
  "minimum_chrome_version": "24.0.1307.0",
  "version": "1.0",
  "app": {
    "background": {
      "scripts": ["main.js"]
    }
  }
}