Examine source code of youtubeSkipAds

{
  "manifest_version": 2,
  "name": "youtubeSkipAds",
  "version": "3.0.2",
  "description": "Skip ads on YouTube",
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "youtubeSkipAds.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "me@example.com"
    }
  }
}