...that were added in 59891cd398 "look at
'embedded' protocols for protocols that support them"
Change-Id: I42836d6fd27cd99e39ab07e626053f002a2651f5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/178047
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>