Examine source code of Smart-Search

{
  "manifest_version": 2,
  "name": "Smart-Search",
  "description": "Only search pages that often have relevant answers",
  "version": "1.1",
  "applications": {
    "gecko": {
      "strict_min_version": "48.0",
      "id": "{3d788fc8-5828-48e0-b464-44698a430d11}"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Smart-Search",
      "search_url": "https://www.google.com/search?q={searchTerms}+site:reddit.com+OR+site:quora.com+OR+site:ycombinator.com+OR+site:stackoverflow.com",
      "keyword": "s",
      "is_default": false,
      "encoding": "UTF-8"
    }
  }
}