Test server for in-browser TCP usage. Change-Id: Ia1a29c0e14a6d2ee8075ce202c9f6998a3ccc4c9 Reviewed-by: Lorn Potter <lorn.potter@gmail.com> (cherry picked from commit a2d0ce32cdfffd3fff1be9c0d6663e11bb01419d) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>