[gtk+/treeview-refactor] Add _gtk_cell_renderer_calc_offset

[Tristan Van Berkom <tvb src gnome org>]

commit a446664c25f8a836c4815e45cbb43686cfe9e967
Author: Tor Lillqvist <tml iki fi>
Date:   Sat Nov 6 14:12:14 2010 +0200

    Add _gtk_cell_renderer_calc_offset

 gtk/gtk.symbols |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtk.symbols b/gtk/gtk.symbols
index cd88fda..2ef829f 100644
--- a/gtk/gtk.symbols
+++ b/gtk/gtk.symbols
@@ -602,6 +602,7 @@ gtk_cell_renderer_set_sensitive
 gtk_cell_renderer_set_visible
 gtk_cell_renderer_start_editing
 gtk_cell_renderer_stop_editing
+_gtk_cell_renderer_calc_offset
 #endif
 #endif