views: Make view::Views::GetPreferredSize() const.

ui/views/controls/table/table_view.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 148 matching lines @@
   // Maps from the index in terms of the model to that of the view.
   int ModelToView(int model_index) const;
 
   // Maps from the index in terms of the view to that of the model.
   int ViewToModel(int view_index) const;
 
   int row_height() const { return row_height_; }
 
   // View overrides:
   virtual void Layout() OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
   virtual bool GetTooltipText(const gfx::Point& p,
                               base::string16* tooltip) const OVERRIDE;
   virtual bool GetTooltipTextOrigin(const gfx::Point& p,
                                     gfx::Point* loc) const OVERRIDE;
 
   // ui::TableModelObserver overrides:
   virtual void OnModelChanged() OVERRIDE;
@@ skipping 160 matching lines @@
 
   // True if in SetVisibleColumnWidth().
   bool in_set_visible_column_width_;
 
   DISALLOW_COPY_AND_ASSIGN(TableView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TABLE_TABLE_VIEW_VIEWS_H_