Examine source code of Social Video Controls

{
  "manifest_version": 3,
  "name": "Social Video Controls",
  "version": "1.1",
  "description": "Adds volume and play/pause controls to videos on Facebook, Instagram, and TikTok.",
  "browser_specific_settings": {
    "gecko": {
      "id": "social-video-controls@bobbite.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.facebook.com/*",
        "https://*.instagram.com/*",
        "https://*.tiktok.com/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true
    }
  ]
}