The QStyle specializations are being made internal. The ArthurStyle
does not seem to require anything from QWindowsStyle, but QCommonStyle
as a base class gives just as nice looks.
Change-Id: I5ad8dd881e03f166ae5d3aedccb2688952dc0a28
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>