Computer Configuration > Administrative Templates > Google Chrome > Password manager
Both
HKLM\Software\Policies\Google\Chrome
Setting the policy to Enabled lets users have Google Chrome check whether usernames and passwords entered were part of a leak. Setting the policy to Disabled does not let users have this functionality. If the policy is set, users can't change it in Google Chrome. If not set, credential leak checking is allowed, but the user can turn it off.