Examine source code of Random Quote Popup

{
  "manifest_version": 2,
  "name": "Random Quote Popup",
  "version": "1.0",
  "description": "Display a random inspirational quote in the popup.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6f3c8008-f887-4aa0-a1e7-ae54e69ef6d5}"
    }
  }
}