Examine source code of randombookmark

{
  "manifest_version": 2,
  "name": "randombookmark",
  "version": "1.1resigned1",
  "description": "Open a random bookmark in a new tab ; delete it or open another one in current tab",
  "icons": {
    "32": "icons/randombutton.png",
    "128": "icons/big.png"
  },
  "permissions": [
    "bookmarks"
  ],
  "browser_action": {
    "default_icon": "icons/randombutton.png",
    "default_title": "randombookmark",
    "default_popup": "page.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e85bb020-8b59-45d8-ae6e-c3e8a52679b6}"
    }
  }
}