[gtk+/gtk-3-22] Copy gtk_clipboard_get_default implementation to gtkclipboard-quartz.c

[John Ralls <jralls src gnome org>]

commit 7e362638ac21e56eda3bafdde2a71dc47bb1dc9f
Author: John Ralls <jralls ceridwen us>
Date:   Tue Jul 18 11:15:12 2017 -0700

    Copy gtk_clipboard_get_default implementation to gtkclipboard-quartz.c
    
    Fixes bug 784323.

 gtk/gtkclipboard-quartz.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkclipboard-quartz.c b/gtk/gtkclipboard-quartz.c
index fec31f5..8429c3c 100644
--- a/gtk/gtkclipboard-quartz.c
+++ b/gtk/gtkclipboard-quartz.c
@@ -286,6 +286,26 @@ gtk_clipboard_get (GdkAtom selection)
   return gtk_clipboard_get_for_display (gdk_display_get_default (), selection);
 }
 
+/**
+ * gtk_clipboard_get_default:
+ * @display: the #GdkDisplay for which the clipboard is to be retrieved.
+ *
+ * Returns the default clipboard object for use with cut/copy/paste menu items
+ * and keyboard shortcuts.
+ *
+ * Return value: (transfer none): the default clipboard object.
+ *
+ * Since: 3.16
+ **/
+GtkClipboard *
+gtk_clipboard_get_default (GdkDisplay *display)
+{
+  g_return_val_if_fail (display != NULL, NULL);
+  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+
+  return gtk_clipboard_get_for_display (display, GDK_SELECTION_CLIPBOARD);
+}
+
 static void
 clipboard_owner_destroyed (gpointer data)
 {