D8851: Set enable_blur_behind hint on demand.

[Kai Uwe Broulik]

broulik accepted this revision.

REPOSITORY
  R236 KWidgetsAddons

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D8851

To: davidedmundson, elvisangelaccio, broulik
Cc: #frameworks