Examine source code of YouTube™ queue

{
  "name": "YouTube™ queue",
  "description": "Queue YouTube™ video's for an instant playlist",
  "version": "1.21",
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "youtubequeue.content.js"
      ],
      "css": [
        "youtubequeue.content.css"
      ],
      "matches": [
        "https://www.youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "youtubequeue.goToNext.js"
  ],
  "icons": {
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{643bef61-5a80-4051-8d01-0dfaed0271cf}"
    }
  }
}