[gnome-chess/arnaudb/wip/gtk4: 41/54] Adapt to Button API.

[Arnaud B. <arnaudb src gnome org>]

commit 34404a5cdd847c89017358a60545759f3ca58243
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Apr 7 10:12:42 2020 +0200

    Adapt to Button API.

 src/gnome-chess.vala | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 0e806c3..197c19c 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -1287,15 +1287,13 @@ Copyright © 2015–2016 Sahil Sareen""";
 
         if (game != null && game.is_paused)
         {
-            pause_resume_button.image = new Image.from_icon_name ("media-playback-start-symbolic",
-                                                                  IconSize.BUTTON);
-            pause_resume_button.tooltip_text = _("Unpause the game");
+            pause_resume_button.set_icon_name ("media-playback-start-symbolic");
+            pause_resume_button.set_tooltip_text (_("Unpause the game"));
         }
         else
         {
-            pause_resume_button.image = new Image.from_icon_name ("media-playback-pause-symbolic",
-                                                                  IconSize.BUTTON);
-            pause_resume_button.tooltip_text = _("Pause the game");
+            pause_resume_button.set_icon_name ("media-playback-pause-symbolic");
+            pause_resume_button.set_tooltip_text (_("Pause the game"));
         }
     }