Examine source code of boring internet

{
  "manifest_version": 2,
  "name": "boring internet",
  "version": "0.1",
  "description": "makes the internet boring",
  "content_scripts": [
    {
      "matches": [
        "https://www.deezer.com/*"
      ],
      "js": [
        "./websites/deezer/homepage.js"
      ]
    },
    {
      "matches": [
        "https://www.reddit.com/",
        "https://old.reddit.com/",
        "https://old.reddit.com/hot/",
        "https://old.reddit.com/new/",
        "https://old.reddit.com/rising/",
        "https://old.reddit.com/controversial/",
        "https://old.reddit.com/top/",
        "https://old.reddit.com/gilded/"
      ],
      "js": [
        "./websites/reddit/homepage.js"
      ]
    },
    {
      "matches": [
        "https://www.youtube.com/"
      ],
      "js": [
        "./websites/youtube/homepage.js"
      ]
    }
  ]
}