[gtk+] wayland: Make data_source_target() an empty stub

[Carlos Garnacho <carlosg src gnome org>]

commit aaa467679d8ea592856a6a472584ba4988f68dcc
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Mar 9 17:30:29 2016 +0100

    wayland: Make data_source_target() an empty stub
    
    This request actually means nothing to the upper GDK layers,
    we used to preempt a GDK_SELECTION_REQUEST event, but this is too
    eager, and not like things work in X11.
    
    Originally in wayland, this event may be used for feedback purposes.
    We however don't perform any mimetype-based feedback, so we can
    safely ignored.
    
    This makes data_source_send() the only place where we actually
    trigger GDK_SELECTION_REQUEST, this one is conceptually the same
    than the X11 selection request event.

 gdk/wayland/gdkselection-wayland.c |   26 --------------------------
 1 files changed, 0 insertions(+), 26 deletions(-)
---
diff --git a/gdk/wayland/gdkselection-wayland.c b/gdk/wayland/gdkselection-wayland.c
index e1dd69b..d6555d5 100644
--- a/gdk/wayland/gdkselection-wayland.c
+++ b/gdk/wayland/gdkselection-wayland.c
@@ -823,34 +823,8 @@ data_source_target (void                  *data,
                     struct wl_data_source *source,
                     const char            *mime_type)
 {
-  GdkWaylandSelection *wayland_selection = data;
-  GdkWindow *window = NULL;
-  GdkAtom selection;
-
   g_debug (G_STRLOC ": %s source = %p, mime_type = %s",
            G_STRFUNC, source, mime_type);
-
-  if (!mime_type)
-    return;
-
-  if (source == wayland_selection->dnd_source)
-    {
-      selection = atoms[ATOM_DND];
-      window = wayland_selection->dnd_owner;
-    }
-  else if (source == wayland_selection->clipboard_source)
-    {
-      selection = atoms[ATOM_CLIPBOARD];
-      window = wayland_selection->clipboard_owner;
-    }
-
-  if (!window)
-    return;
-
-  gdk_wayland_selection_request_target (wayland_selection, window,
-                                        selection,
-                                        gdk_atom_intern (mime_type, FALSE),
-                                        -1);
 }
 
 static void