We added a note to the geolocation doorhanger, warning the user when Windows is
going to repeat the request for user permission (although it asks for permission
for Firefox, not for the web page). However, Windows won't do this if there is
no wifi adapter that could perform the scan. Here, we avoid adding the note in
that case.
Differential Revision: https://phabricator.services.mozilla.com/D218588
40c069c7c7