Don't re-set default properties in MediaBase::componentComplete
Don't re-set default properties in MediaBase::componentComplete

This is to avoid conflicting with state restore from background playback.

Change-Id: Idc5440b55a27bb5c5109717f405591e934bbedbc
Reviewed-on: http://codereview.qt-project.org/4397
Reviewed-by: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Dmytro Poplavskiy <72e04cfb587e72184d425a79cb5cea0021f0b982@nokia.com>

sergiusens/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia,webOS-ports/qtmultimedia,nezticle/qtmultimedia,nezticle/qtmultimedia,jfaust/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia,jfaust/qtmultimedia,nezticle/qtmultimedia,nezticle/qtmultimedia,mer-qt/qtmultimedia,mer-qt/qtmultimedia,sergiusens/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia