[gnome-shell] appDisplay/baseAppView: Also consider its own content box when adapting

[Marge Bot <marge-bot src gnome org>]

commit 9c10c34b0717423753b553aac1d508bb8522fc52
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Dec 3 13:01:29 2020 -0300

    appDisplay/baseAppView: Also consider its own content box when adapting
    
    Otherwise setting margins and paddings from CSS may result in the grid
    being adapted to the wrong size.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1519>

 js/ui/appDisplay.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index d1af384d17..2f82b97f40 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -848,6 +848,7 @@ var BaseAppView = GObject.registerClass({
             x2: width,
             y2: height,
         });
+        box = this.get_theme_node().get_content_box(box);
         box = this._scrollView.get_theme_node().get_content_box(box);
         box = this._grid.get_theme_node().get_content_box(box);