D11573: Use QPlatformWindow::startSystemMove() with Qt 5.11

[Alexander Volkov]

volkov added a comment.


  https://codereview.qt-project.org/224251

REPOSITORY
  R31 Breeze

REVISION DETAIL
  https://phabricator.kde.org/D11573

To: volkov, #breeze
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jensreuterberg, abetts, sebas, apol, mart