Examine source code of YouTube force shuffle

{
  "manifest_version": 2,
  "name": "YouTube force shuffle",
  "version": "1.3resigned1",
  "description": "Sometimes YouTube keeps forgetting that you had the shuffle on when watching a playlist. This plugin forces the shuffle on at all times.",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "yts.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8170c093-b9d7-4cad-a631-8509c2ab553d}"
    }
  }
}