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

ui/views/controls/menu/submenu_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_MENU_SUBMENU_VIEW_H_
 #define UI_VIEWS_CONTROLS_MENU_SUBMENU_VIEW_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 37 matching lines @@
   // Returns the number of child views that are MenuItemViews.
   // MenuItemViews are identified by ID.
   int GetMenuItemCount();
 
   // Returns the MenuItemView at the specified index.
   MenuItemView* GetMenuItemAt(int index);
 
   // Positions and sizes the child views. This tiles the views vertically,
   // giving each child the available width.
   virtual void Layout() OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
 
   // Override from View.
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
   virtual ui::TextInputClient* GetTextInputClient() OVERRIDE;
 
   // Painting.
   virtual void PaintChildren(gfx::Canvas* canvas,
                              const views::CullSet& cull_view) OVERRIDE;
 
   // Drag and drop methods. These are forwarded to the MenuController.
@@ skipping 125 matching lines @@
   // the drop is over.
   MenuItemView* drop_item_;
 
   // Position of the drop.
   MenuDelegate::DropPosition drop_position_;
 
   // Ancestor of the SubmenuView, lazily created.
   MenuScrollViewContainer* scroll_view_container_;
 
   // See description above getter.
-  int max_minor_text_width_;
+  mutable int max_minor_text_width_;
 
   // Minimum width returned in GetPreferredSize().
   int minimum_preferred_width_;
 
   // Reposition open menu when contained views change size.
   bool resize_open_menu_;
 
   // The submenu's scroll animator
   scoped_ptr<ScrollAnimator> scroll_animator_;
 
   // Difference between current position and cumulative deltas passed to
   // OnScroll.
   // TODO(tdresser): This should be removed when raw pixel scrolling for views
   // is enabled. See crbug.com/329354.
   float roundoff_error_;
 
   PrefixSelector prefix_selector_;
 
   DISALLOW_COPY_AND_ASSIGN(SubmenuView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_SUBMENU_VIEW_H_