[gtk: 2/2] Merge branch 'wip/jimmac/treeview-borders' into 'master'

[Jakub Steiner <jimmac src gnome org>]

commit 90fb58e923b58fb858fd43a60e79c8bb8bd62bd3
Merge: fb2502fa5f e6fcac29b5
Author: Jakub Steiner <jimmac gmail com>
Date:   Wed Apr 15 15:35:32 2020 +0000

    Merge branch 'wip/jimmac/treeview-borders' into 'master'
    
    Adwaita: slightly increase contrast for treeview borders
    
    Closes #2238
    
    See merge request GNOME/gtk!1692

 gtk/theme/Adwaita/_common.scss | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)
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