Fix test script: let actual font used match the font description

Change-Id: Ia6bd1fc7f2e4a069fb29927f18994843e0db7dd0
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Android: extract View_scrollbarDefaultDelayBeforeFade

Task-number: QTBUG-39215
Change-Id: I8cc6e16a7155710ad322dc884ccbb194ca7d5b67
Reviewed-by: BogDan Vatra <bogdan@kde.org>