Use a default referrer policy of no-referrer-when-downgrade.

This policy is removed. It is not compatible with this version of Google Chrome. Read more at https://support.google.com/chrome/a/answer/7643500

Supported on: At least Microsoft Windows 7 or Windows Server 2008 family
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Google\ChromeOS
Value NameForceLegacyDefaultReferrerPolicy
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

chromeos.admx

Administrative Templates (Computers)

Administrative Templates (Users)