QVideoWidget: pass windowId to QVideoWindowControl early.
QVideoWidget: pass windowId to QVideoWindowControl early.

To ensure the winId is know when playback starts.

Reviewed-by:Andrew den Exter

enthought/qt-mobility,kaltsi/qt-mobility,tmcguire/qt-mobility,kaltsi/qt-mobility,tmcguire/qt-mobility,qtproject/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,enthought/qt-mobility,KDE/android-qt-mobility,tmcguire/qt-mobility,KDE/android-qt-mobility,kaltsi/qt-mobility,enthought/qt-mobility,qtproject/qt-mobility,kaltsi/qt-mobility,KDE/android-qt-mobility,qtproject/qt-mobility,KDE/android-qt-mobility,enthought/qt-mobility,tmcguire/qt-mobility,enthought/qt-mobility,qtproject/qt-mobility,enthought/qt-mobility,tmcguire/qt-mobility