Examine source code of Add ALC Search Engine

{
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "ALC on the Web",
      "search_url": "https://eow.alc.co.jp/search?q={searchTerms}",
      "favicon_url": "https://eow.alc.co.jp/favicon.ico",
      "keyword": "@alc"
    }
  },
  "manifest_version": 2,
  "name": "Add ALC Search Engine",
  "version": "1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{34f7ae63-c89c-42c3-98fb-a9d5df01b868}"
    }
  }
}