Examine source code of Google Drive Search

{
  "manifest_version": 2,
  "name": "Google Drive Search",
  "version": "1.1resigned1",
  "description": "Adds the ability to search the user's Google Drive",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "55.0",
      "id": "{46dbe8e0-7984-42fb-9dd5-b61422239c7a}"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "GDrive",
      "search_url": "https://drive.google.com/drive/u/0/search?q={searchTerms}",
      "keyword": "gdrive",
      "favicon_url": "https://drive.google.com/favicon.ico",
      "is_default": false,
      "encoding": "UTF-8"
    }
  }
}