Designer: port from QSharedPointer to unique_ptr

The PropertyHelper objects are never shared, so the only reason to use
a shared instead of a unique pointer, apart from the code possibly
predating C++11, is that the container in which they're held, QList,
cannot deal with move-only types.

Change the container to one that can (std::vector) and use unique_ptr
instead of QSharedPointer.

As a drive-by, make the createPropertyHelper() factory function return
by unique_ptr directly.

This removes the last user of QSharedPointer in this module, making it
ready for an eventual QT_NO_SHARED_POINTER.

Pick-to: 6.5
Change-Id: I7051b351c4abbd1099db46823b52b5b4b16fdab5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>

0 files changed, 0 insertions, 0 deletions