[gnome-builder] symbol-tree: add comment on saving state

[Christian Hergert <chergert src gnome org>]

commit 48376ff674e9fdf9d7fe11d2ed2a2a85acfeb6c9
Author: Christian Hergert <christian hergert me>
Date:   Sat Sep 26 16:11:37 2015 -0700

    symbol-tree: add comment on saving state

 plugins/symbol-tree/symbol-tree.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/plugins/symbol-tree/symbol-tree.c b/plugins/symbol-tree/symbol-tree.c
index a3502a6..7326c06 100644
--- a/plugins/symbol-tree/symbol-tree.c
+++ b/plugins/symbol-tree/symbol-tree.c
@@ -108,6 +108,9 @@ notify_active_view_cb (SymbolTree  *self,
     {
       /*
        * First, clear the old tree items.
+       *
+       * TODO: Get cross compile names for nodes so that we can
+       *       recompute the open state.
        */
       gb_tree_set_root (self->tree, gb_tree_node_new ());;