Examine source code of Bidder

{
  "manifest_version": 2,
  "name": "Bidder",
  "version": "0.0.1",
  "browser_action": {
    "default_title": "Bidder",
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "script.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "notifications",
    "http://*/",
    "https://*/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0a98ae14-76c6-4673-af03-c5f556091983}"
    }
  }
}