Rename the test slot eventFilter() to testEventFilter(), which fixes:
tst_qgraphicsproxywidget.cpp:101:10: warning: 'tst_QGraphicsProxyWidget::eventFilter' hides overloaded virtual function [-Woverloaded-virtual]
void eventFilter();.
Change-Id: Ia05d188b18dcbf3a0b093dcea19a7122bcde6e62
Reviewed-by: Andreas Aardal Hanssen <andreas@hanssen.name>