D11197: Allow OverlaySheet clients to omit the built-in close button

[Nathaniel Graham]

ngraham closed this revision.

REPOSITORY
  R169 Kirigami

REVISION DETAIL
  https://phabricator.kde.org/D11197

To: ngraham, mart, #kirigami
Cc: plasma-devel, apol, davidedmundson, mart, hein