Examine source code of YouTubePlaylistSearch

{
  "manifest_version": 2,
  "name": "YouTube Playlist Search",
  "version": "1.0.1",
  "description": "Adds a search bar for quick filtering of playlists in the save dialog and on the playlists page. Optionally fixes autoplay/playlist navigation and auto-dismisses the 'Are you still watching?' popup.",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    },
    "default_title": "YouTube Playlist Search",
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content/content.js",
        "content/playlist-fix.js",
        "content/auto-confirm.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-playlist-fix@itznotme",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}