Examine source code of YouTube Search Engine

{
  "manifest_version": 2,
  "name": "YouTube search engine",
  "description": "Adds YouTube search engine",
  "version": "1.3resigned1",
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "YouTube",
      "search_url": "https://www.youtube.com/results?search_query={searchTerms}",
      "keyword": "@youtube",
      "favicon_url": "https://www.youtube.com/favicon.ico",
      "is_default": false,
      "encoding": "UTF-8"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a168bd0-55d2-466f-9c68-077c416943be}"
    }
  }
}