RemoveCommonFilter
virtual bool RemoveCommonFilter(BMessageFilter* filter);
Window()->RemoveCommonFilter(fMouseFilter);
RemoveCommonFilter(fEscapeFilter);
Window()->RemoveCommonFilter(fMouseWheelFilter);
Window()->RemoveCommonFilter(fEventFilter);
Window()->RemoveCommonFilter(fTabFilter);
Window()->RemoveCommonFilter(fMouseWheelFilter);
Window()->RemoveCommonFilter(keyPressFilter);
Window()->RemoveCommonFilter(fMouseDownFilter);
CPPUNIT_ASSERT(!Looper.RemoveCommonFilter(NULL));
CPPUNIT_ASSERT(!Looper.RemoveCommonFilter(Filter));
CPPUNIT_ASSERT(!Looper.RemoveCommonFilter(&Filter));
CPPUNIT_ASSERT(Looper.RemoveCommonFilter(&Filter));