Fix tooltip position when used with QQuickWidget
Fix tooltip position when used with QQuickWidget

Task-number: QTBUG-39878
Change-Id: I1df4e7b7b17a11234e2569d6502aa9618a590acd
Reviewed-by: Gabriel de Dietrich <57b5c683f0b6abfc17ef151d5b68c8944258b63a@digia.com>

mizukusak/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols