Examine source code of Netflix Bitrate Booster

{
  "manifest_version": 2,
  "name": "Netflix Bitrate Booster",
  "version": "1.0.1",
  "description": "Netflix Bitrate Booster automatically selects the highest available bitrate for your Netflix streams, ensuring you always get the best possible video quality",
  "developer": {
    "name": "Nick Barry"
  },
  "homepage_url": "https://github.com/itsnickbarry/netflix-max-bitrate",
  "content_scripts": [
    {
      "matches": [
        "*://www.netflix.com/*"
      ],
      "js": [
        "netflix_max_bitrate.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b8ead43-b595-478b-9bb9-610031fa3c96}"
    }
  }
}