[gtk: 7/7] Merge branch 'wip/exalm/window-headerbar' into 'master'

[Benjamin Otte <otte src gnome org>]

commit 389575ee18ef1ce3b1daf295c3fbfa7b5f328037
Merge: fd47e86689 7c4694ca3c
Author: Benjamin Otte <otte benjamin googlemail com>
Date:   Thu Apr 23 15:26:30 2020 +0000

    Merge branch 'wip/exalm/window-headerbar' into 'master'
    
    First steps for #2242
    
    See merge request GNOME/gtk!1739

 gtk/gtkapplicationwindow.c |   5 +-
 gtk/gtkheaderbar.c         | 140 +++++++++++++++++----------------------------
 gtk/gtkheaderbarprivate.h  |   4 --
 gtk/gtkwindow.c            | 129 ++++++++++++++++++++++++-----------------
 gtk/gtkwindowprivate.h     |   2 -
 5 files changed, 132 insertions(+), 148 deletions(-)
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