Examine source code of GitHub Saved Filters

{
  "name": "GitHub Saved Filters",
  "version": "1.0.4",
  "description": "Allows to save issue and pull request filters on GitHub and access them via the main menu.",
  "manifest_version": 2,
  "icons": {
    "128": "assets/icon.png"
  },
  "content_scripts": [
    {
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "matches": [
        "https://github.com/*"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{071e944b-8d1c-4b48-8bba-4c2519deee01}"
    }
  }
}