Examine source code of YouTube Style Fixer

{
  "manifest_version": 2,
  "name": "YouTube Style Fixer",
  "version": "1.13",
  "description": "Improves the new design of YouTube",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-style-fixer@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "collects_data": false,
        "required": [
          "none"
        ]
      }
    }
  }
}