Examine source code of quietYoutube

{
  "manifest_version": 2,
  "name": "quietYoutube",
  "version": "1.0.0",
  "description": "youtube for work",
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/results*"
      ],
      "css": [
        "research_video.css"
      ]
    },
    {
      "matches": [
        "https://*.youtube.com/"
      ],
      "css": [
        "home_youtube.css"
      ],
      "js": [
        "research_video.js"
      ]
    }
  ]
}