[gtk] search entry: Use a GtkEntryAccessible

[Matthias Clasen <matthiasc src gnome org>]

commit 2b9436b27939e3afb3e9746226d5fb6350a89539
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 22 15:50:45 2019 -0500

    search entry: Use a GtkEntryAccessible
    
    This preserves the status quo of a11y support
    for entry variations.

 gtk/gtksearchentry.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtksearchentry.c b/gtk/gtksearchentry.c
index 534718f309..188ede1d9f 100644
--- a/gtk/gtksearchentry.c
+++ b/gtk/gtksearchentry.c
@@ -41,6 +41,8 @@
 #include "gtkmarshalers.h"
 #include "gtkstylecontext.h"
 #include "gtkeventcontrollerkey.h"
+#include "a11y/gtkentryaccessible.h"
+
 
 /**
  * SECTION:gtksearchentry
@@ -390,6 +392,7 @@ gtk_search_entry_class_init (GtkSearchEntryClass *klass)
   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
                                 "stop-search", 0);
 
+  gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ENTRY_ACCESSIBLE);
   gtk_widget_class_set_css_name (widget_class, I_("entry"));
 }