Examine source code of Netflix Adblock

{
  "manifest_version": 2,
  "name": "Netflix Adblock",
  "version": "1.0.1",
  "description": "Automatically decline to view the ads which Netflix plays during closing credits.",
  "developer": {
    "name": "Nick Barry"
  },
  "homepage_url": "https://github.com/itsnickbarry/netflix-adblock",
  "content_scripts": [
    {
      "matches": [
        "*://www.netflix.com/*"
      ],
      "js": [
        "netflix_adblock.js"
      ]
    }
  ]
}