Two methods of the private class used to take a QByteArray with from
and to indices into it, for where to start and stop a scan. Now that
they take a QByteArrayView, those parameters can be used by the caller
to shorten the view to the desired portion.
Change-Id: Id1586afb87a9e8a189b69e485278375ff504fb7b
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>