Other parts of the system display the gardener on call based on 

https://build.chromium.org/p/chromiumos/sheriff_cr_cros_gardeners.js. 

There has been feature request to display shadow gardener as well (b/78134001). 

(The sheriff_cr_cros_gardener.js file is generated with other files in this list: https://cs.chromium.org/chromium/infra/appengine/chromium_build/app.py?sq=package:chromium&dr=CSs&q=cr_cros_+file:%5Einfra/appengine/chromium_build/+package:%5Echromium$&l=5390)