D9857: Smooth Scrolling

[Ronald Macmaster]

rmacmaster added a reviewer: Okular.

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D9857

To: rmacmaster, okular-devel, #okular
Cc: #okular, michaelweghorn, gassaf, ngraham, aacid