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

ui/message_center/views/notifier_settings_view.h

 // Copyright (c) 2013 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_MESSAGE_CENTER_VIEWS_NOTIFIER_SETTINGS_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_NOTIFIER_SETTINGS_VIEW_H_
 
 #include <set>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 77 matching lines @@
     views::ImageButton* learn_more_;
 
     DISALLOW_COPY_AND_ASSIGN(NotifierButton);
   };
 
   // Given a new list of notifiers, updates the view to reflect it.
   void UpdateContentsView(const std::vector<Notifier*>& notifiers);
 
   // Overridden from views::View:
   virtual void Layout() OVERRIDE;
-  virtual gfx::Size GetMinimumSize() OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetMinimumSize() const OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
   virtual bool OnMouseWheel(const ui::MouseWheelEvent& event) OVERRIDE;
 
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Overridden from views::MenuButtonListener:
   virtual void OnMenuButtonClicked(views::View* source,
                                    const gfx::Point& point) OVERRIDE;
 
   views::ImageButton* title_arrow_;
   views::Label* title_label_;
   views::MenuButton* notifier_group_selector_;
   views::ScrollView* scroller_;
   NotifierSettingsProvider* provider_;
   std::set<NotifierButton*> buttons_;
   scoped_ptr<NotifierGroupMenuModel> notifier_group_menu_model_;
   scoped_ptr<views::MenuRunner> notifier_group_menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(NotifierSettingsView);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_NOTIFIER_SETTINGS_VIEW_H_