[gnome-games] display-box: Bind title to fullscreen header bar

[Alexander Mikhaylenko <alexm src gnome org>]

commit 73b78be4ef72bdee9d06c9f66c7e78f10a71a694
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Feb 18 22:42:29 2020 +0500

    display-box: Bind title to fullscreen header bar
    
    Looks like this fell through the cracks at some point.

 data/ui/display-box.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/ui/display-box.ui b/data/ui/display-box.ui
index bcff5ba0..bcf12333 100644
--- a/data/ui/display-box.ui
+++ b/data/ui/display-box.ui
@@ -12,6 +12,7 @@
           <object class="GamesDisplayHeaderBar" id="fullscreen_header_bar">
             <property name="visible">True</property>
             <property name="show-title-buttons">False</property>
+            <property name="game-title" bind-source="GamesDisplayBox" bind-property="game-title" 
bind-flags="bidirectional"/>
             <property name="is-showing-snapshots" bind-source="GamesDisplayBox" 
bind-property="is-showing-snapshots" bind-flags="bidirectional"/>
             <signal name="notify::is-menu-open" handler="block_autohide_changed"/>
             <signal name="back" handler="on_fullscreen_header_bar_back"/>