Split some of the autotests into widget and non widget parts.

Since the tests are mostly not widget based.

Change-Id: Ic3fa4224b19f2a5c710fd4763b5e645252975c1c
Reviewed-on: http://codereview.qt-project.org/4174
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>

tests/auto/qmediaobject/tst_qmediaobject.cpp

@@ -42,7 +42,6 @@
 //TESTED_COMPONENT=src/multimedia
 
 #include "tst_qmediaobject.h"
-#include "qvideowidget.h"
 
 #include "mockmediarecorderservice.h"
 #include "mockmediaserviceprovider.h"