[gtk/wip/exalm/image-button: 3/4] demo: Ensure .image-button on header bar buttons

[Alexander Mikhaylenko <alexm src gnome org>]

commit 7ebd9291d97acad640cf1b4e7abda015c9861f0d
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sun May 9 20:53:05 2021 +0500

    demo: Ensure .image-button on header bar buttons

 demos/gtk-demo/font-features.ui |  6 +-----
 demos/gtk-demo/headerbar.c      | 14 +++-----------
 2 files changed, 4 insertions(+), 16 deletions(-)
---
diff --git a/demos/gtk-demo/font-features.ui b/demos/gtk-demo/font-features.ui
index 8997a5ac9e..340fecfdcb 100644
--- a/demos/gtk-demo/font-features.ui
+++ b/demos/gtk-demo/font-features.ui
@@ -10,12 +10,8 @@
           <object class="GtkButton" id="reset">
             <property name="receives-default">1</property>
             <property name="tooltip-text">Reset</property>
+            <property name="icon-name">view-refresh-symbolic</property>
             <signal name="clicked" handler="font_features_reset_features" swapped="no"/>
-            <child>
-              <object class="GtkImage">
-                <property name="icon-name">view-refresh-symbolic</property>
-              </object>
-            </child>
           </object>
         </child>
       </object>
diff --git a/demos/gtk-demo/headerbar.c b/demos/gtk-demo/headerbar.c
index 590343bd94..d19837563f 100644
--- a/demos/gtk-demo/headerbar.c
+++ b/demos/gtk-demo/headerbar.c
@@ -18,8 +18,6 @@ do_headerbar (GtkWidget *do_widget)
   GtkWidget *header;
   GtkWidget *button;
   GtkWidget *box;
-  GtkWidget *image;
-  GIcon *icon;
 
   if (!window)
     {
@@ -32,20 +30,14 @@ do_headerbar (GtkWidget *do_widget)
 
       header = gtk_header_bar_new ();
 
-      button = gtk_button_new ();
-      icon = g_themed_icon_new ("mail-send-receive-symbolic");
-      image = gtk_image_new_from_gicon (icon);
-      g_object_unref (icon);
-      gtk_button_set_child (GTK_BUTTON (button), image);
+      button = gtk_button_new_from_icon_name ("mail-send-receive-symbolic");
       gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);
 
       box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
       gtk_widget_add_css_class (box, "linked");
-      button = gtk_button_new ();
-      gtk_button_set_child (GTK_BUTTON (button), gtk_image_new_from_icon_name ("go-previous-symbolic"));
+      button = gtk_button_new_from_icon_name ("go-previous-symbolic");
       gtk_box_append (GTK_BOX (box), button);
-      button = gtk_button_new ();
-      gtk_button_set_child (GTK_BUTTON (button), gtk_image_new_from_icon_name ("go-next-symbolic"));
+      button = gtk_button_new_from_icon_name ("go-next-symbolic");
       gtk_box_append (GTK_BOX (box), button);
 
       gtk_header_bar_pack_start (GTK_HEADER_BAR (header), box);