[gtk: 5/5] Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 4f8a211c5165f436f94141504bed3b7bffad2cfd
Merge: 5536a2ffe6 30b7545fb5
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Sep 29 01:53:02 2020 +0000

    Merge branch 'matthiasc/for-master' into 'master'
    
    Matthiasc/for master
    
    Closes #3202
    
    See merge request GNOME/gtk!2637

 gtk/gtktextbuffer.c                     |  4 +++-
 gtk/gtkwidget.c                         | 17 +++++++++++++++--
 gtk/gtkwindow.c                         |  8 +++++---
 testsuite/reftests/gradient-flip.css    | 14 ++++++++++++++
 testsuite/reftests/gradient-flip.ref.ui |  9 +++++++++
 testsuite/reftests/gradient-flip.ui     | 13 +++++++++++++
 6 files changed, 59 insertions(+), 6 deletions(-)
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