[gtk: 3/3] Merge branch 'broadway-prune' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 372db8d239844ade457c62e33fa83ff2f806b06a
Merge: 3b1300632d d57e6b754f
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Aug 26 17:52:57 2020 +0000

    Merge branch 'broadway-prune' into 'master'
    
    broadway: Prune fully clipped render nodes
    
    Closes #3086
    
    See merge request GNOME/gtk!2487

 gdk/broadway/broadway-protocol.h   |   2 +-
 gsk/broadway/gskbroadwayrenderer.c | 185 +++++++++++++++++++++++++++++--------
 2 files changed, 147 insertions(+), 40 deletions(-)
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