Examine source code of YouTube Clean Share

{
  "manifest_version": 2,
  "name": "YouTube Clean Share Link",
  "version": "1.0",
  "description": "Removes tracking parameters from YouTube share links.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon.png"
  },
  "applications": {
    "gecko": {
      "id": "youtube-clean-share@example.com"
    }
  }
}