[gnome-games] display-header-bar: Bind game title in xml

[Alexander Mikhaylenko <alexm src gnome org>]

commit 8626b6a816af54202ba3085de778f3c09b9cbb7f
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Jan 28 19:29:28 2020 +0500

    display-header-bar: Bind game title in xml

 data/ui/display-header-bar.ui  |  3 ++-
 src/ui/display-header-bar.vala | 10 +---------
 2 files changed, 3 insertions(+), 10 deletions(-)
---
diff --git a/data/ui/display-header-bar.ui b/data/ui/display-header-bar.ui
index b2f501e6..4b231928 100644
--- a/data/ui/display-header-bar.ui
+++ b/data/ui/display-header-bar.ui
@@ -14,7 +14,7 @@
         <child>
           <object class="GtkHeaderBar" id="ingame_header_bar">
             <property name="visible">True</property>
-            <property name="title" translatable="yes">Games</property>
+            <property name="title" bind-source="GamesDisplayHeaderBar" bind-property="game-title" 
bind-flags="bidirectional"/>
             <property name="show_close_button">True</property>
             <child>
               <object class="GtkButton" id="back">
@@ -131,6 +131,7 @@
         <child>
           <object class="GtkHeaderBar" id="savestates_header_bar">
             <property name="visible">True</property>
+            <property name="title" bind-source="GamesDisplayHeaderBar" bind-property="game-title" 
bind-flags="bidirectional"/>
             <child>
               <object class="GtkButton">
                 <property name="sensitive">False</property>
diff --git a/src/ui/display-header-bar.vala b/src/ui/display-header-bar.vala
index 875e1098..fde9ec92 100644
--- a/src/ui/display-header-bar.vala
+++ b/src/ui/display-header-bar.vala
@@ -7,15 +7,7 @@ private class Games.DisplayHeaderBar : Gtk.Bin {
        [GtkChild]
        private MediaMenuButton media_button;
 
-       private string _game_title;
-       public string game_title {
-               get { return _game_title; }
-               set {
-                       _game_title = value;
-                       ingame_header_bar.title = value;
-                       savestates_header_bar.title = value;
-               }
-       }
+       public string game_title { get; set; }
 
        public bool show_title_buttons {
                set { ingame_header_bar.show_close_button = value; }