1 files changed, 3 insertions, 3 deletions
diff --git a/chrome/browser/gtk/browser_actions_toolbar_gtk.h b/chrome/browser/gtk/browser_actions_toolbar_gtk.h
index ac80386..5d8b1c3 100644
--- a/chrome/browser/gtk/browser_actions_toolbar_gtk.h
+++ b/chrome/browser/gtk/browser_actions_toolbar_gtk.h
@@ -61,9 +61,9 @@ class BrowserActionsToolbarGtk : public ExtensionToolbarModel::Observer,
   void Update();
 
   // NotificationObserver implementation.
-  void Observe(NotificationType type,
-               const NotificationSource& source,
-               const NotificationDetails& details);
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
 
   bool animating() {
     return resize_animation_.is_animating();