QWidget: replace manual memory management with unique_ptr [3/N]: topextra->shareContext

Despite the name, it's fully owned by an individual QWidget object.

Also make the member mutable, so we can remove the const_cast hack in
QWidgetPrivate::shareContext(), and protect QT_NO_OPENGL builds, since
the naked pointer compiled by chance due to some unguarded forward
declarations while a unique_ptr will somewhere want to call the dtor,
which doesn't compile on an object of merely forward-declared type.

Change-Id: If8027b55d303822236fcdc1a79e4f3010967b4d2
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

0 files changed, 0 insertions, 0 deletions