Couple of tweaks for tables:

ui/views/controls/table/table_view_views.h

Index: ui/views/controls/table/table_view_views.h
diff --git a/ui/views/controls/table/table_view_views.h b/ui/views/controls/table/table_view_views.h
index e6bf96746c56fa9dff3023f671b95264fb30c0bb..bab6e6a3a8c93ecc25b968aa82a89f2f035b0731 100644
--- a/ui/views/controls/table/table_view_views.h
+++ b/ui/views/controls/table/table_view_views.h
@@ -143,6 +143,13 @@ class VIEWS_EXPORT TableView
   void SetColumnVisibility(int id, bool is_visible);
   bool IsColumnVisible(int id) const;
 
+  // Adds the specified column. |col| is not made visible.
+  void AddColumn(const ui::TableColumn& col);
+
+  // Returns true if the column with the specified id is known (either visible
+  // or not).
+  bool HasColumn(int id) const;
+
   // TODO(sky): rename to set_observer().
   void SetObserver(TableViewObserver* observer) {
     table_view_observer_ = observer;