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

ash/system/web_notification/web_notification_tray.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 ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
 #define ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
 
 #include "ash/ash_export.h"
 #include "ash/system/tray/tray_background_view.h"
 #include "ash/system/user/login_status.h"
@@ skipping 72 matching lines @@
   virtual bool ClickedOutsideBubble() OVERRIDE;
 
   // Overridden from ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 
   // Overridden from views::TrayBubbleView::Delegate.
   virtual void BubbleViewDestroyed() OVERRIDE;
   virtual void OnMouseEnteredView() OVERRIDE;
   virtual void OnMouseExitedView() OVERRIDE;
   virtual base::string16 GetAccessibleNameForBubble() OVERRIDE;
-  virtual gfx::Rect GetAnchorRect(views::Widget* anchor_widget,
-                                  AnchorType anchor_type,
-                                  AnchorAlignment anchor_alignment) OVERRIDE;
+  virtual gfx::Rect GetAnchorRect(
+      views::Widget* anchor_widget,
+      AnchorType anchor_type,
+      AnchorAlignment anchor_alignment) const OVERRIDE;
   virtual void HideBubble(const views::TrayBubbleView* bubble_view) OVERRIDE;
 
   // Overridden from ButtonListener.
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Overridden from MessageCenterTrayDelegate.
   virtual void OnMessageCenterTrayChanged() OVERRIDE;
   virtual bool ShowMessageCenter() OVERRIDE;
   virtual void HideMessageCenter() OVERRIDE;
@@ skipping 70 matching lines @@
 
   // Observes the work area for |popup_collection_| and notifies to it.
   scoped_ptr<WorkAreaObserver> work_area_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_