Couple of tweaks for tables:

ui/views/controls/table/table_view_views.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_CONTROLS_TABLE_TABLE_VIEW_VIEWS_H_
 #define UI_VIEWS_CONTROLS_TABLE_TABLE_VIEW_VIEWS_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 125 matching lines @@
   int FirstSelectedRow();
 
   const ui::ListSelectionModel& selection_model() const {
     return selection_model_;
   }
 
   // Changes the visibility of the specified column (by id).
   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;
   }
   TableViewObserver* observer() const { return table_view_observer_; }
 
   const std::vector<VisibleColumn>& visible_columns() const {
     return visible_columns_;
   }
 
@@ skipping 156 matching lines @@
   scoped_ptr<TableViewRowBackgroundPainter> row_background_painter_;
 
   TableGrouper* grouper_;
 
   DISALLOW_COPY_AND_ASSIGN(TableView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TABLE_TABLE_VIEW_VIEWS_H_