chromium/ppapi/tests/extensions/load_unload/manifest.json

{
  "name": "Lazy background wait for NaCl test",
  "description": "Tests that a lazy background page stays alive while a NaCl module exists in its DOM",
  "version": "0",
  "manifest_version": 2,
  "background": {
    "scripts": ["background.js"],
    "persistent": false
  },
  "browser_action": {
    "default_icon" : "ext_icon.png",
    "default_title": "Open Extensions window"
  }
}