[gtk: 3/3] Merge branch 'wayland-backend-api-cleanup' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 93cfa3855c7dbc847233404c51e24ba909b45d84
Merge: 6e81573776 31042bd761
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Sep 19 18:19:18 2020 +0000

    Merge branch 'wayland-backend-api-cleanup' into 'master'
    
    wayland: Change backend api to use GdkToplevel
    
    See merge request GNOME/gtk!2598

 docs/reference/gdk/gdk4-sections.txt |  38 +++--
 gdk/wayland/gdksurface-wayland.c     | 267 +++++++++++++++++------------------
 gdk/wayland/gdkwaylandsurface.h      |  68 +++++----
 gtk/gtkapplication-wayland.c         |  14 +-
 gtk/gtkwindow.c                      |  18 +--
 5 files changed, 212 insertions(+), 193 deletions(-)
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