Standardize usage of virtual/override/final specifiers.

ash/system/web_notification/ash_popup_alignment_delegate.h

 // Copyright 2014 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_ASH_POPUP_ALIGNMENT_DELEGATE_H_
 #define ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_
 
 #include "ash/ash_export.h"
 #include "ash/shelf/shelf_layout_manager_observer.h"
 #include "ash/shelf/shelf_types.h"
@@ skipping 19 matching lines @@
 
 // The PopupAlignmentDelegate subclass for Ash. It needs to handle alignment of
 // the shelf and its autohide state.
 class ASH_EXPORT AshPopupAlignmentDelegate
     : public message_center::PopupAlignmentDelegate,
       public ShelfLayoutManagerObserver,
       public ShellObserver,
       public gfx::DisplayObserver {
  public:
   AshPopupAlignmentDelegate();
-  virtual ~AshPopupAlignmentDelegate();
+  ~AshPopupAlignmentDelegate() override;
 
   // Start observing the system.
   void StartObserving(gfx::Screen* screen, const gfx::Display& display);
 
   // Sets the current height of the system tray so that the notification toasts
   // can avoid it.
   void SetSystemTrayHeight(int height);
 
   // Overridden from message_center::PopupAlignmentDelegate:
-  virtual int GetToastOriginX(const gfx::Rect& toast_bounds) const override;
-  virtual int GetBaseLine() const override;
-  virtual int GetWorkAreaBottom() const override;
-  virtual bool IsTopDown() const override;
-  virtual bool IsFromLeft() const override;
-  virtual void RecomputeAlignment(const gfx::Display& display) override;
+  int GetToastOriginX(const gfx::Rect& toast_bounds) const override;
+  int GetBaseLine() const override;
+  int GetWorkAreaBottom() const override;
+  bool IsTopDown() const override;
+  bool IsFromLeft() const override;
+  void RecomputeAlignment(const gfx::Display& display) override;
 
  private:
   friend class AshPopupAlignmentDelegateTest;
   friend class WebNotificationTrayTest;
 
   // Get the current alignment of the shelf.
   ShelfAlignment GetAlignment() const;
 
   // Update |shelf_| and start watching when it's first set. This should not
   // be done in the constructor because the shelf might not be initialized at
   // that point.
   void UpdateShelf();
 
   // Overridden from ShellObserver:
-  virtual void OnDisplayWorkAreaInsetsChanged() override;
+  void OnDisplayWorkAreaInsetsChanged() override;
 
   // Overridden from ShelfLayoutManagerObserver:
-  virtual void OnAutoHideStateChanged(ShelfAutoHideState new_state) override;
+  void OnAutoHideStateChanged(ShelfAutoHideState new_state) override;
 
   // Overridden from gfx::DisplayObserver:
-  virtual void OnDisplayAdded(const gfx::Display& new_display) override;
-  virtual void OnDisplayRemoved(const gfx::Display& old_display) override;
-  virtual void OnDisplayMetricsChanged(const gfx::Display& display,
-                                       uint32_t metrics) override;
+  void OnDisplayAdded(const gfx::Display& new_display) override;
+  void OnDisplayRemoved(const gfx::Display& old_display) override;
+  void OnDisplayMetricsChanged(const gfx::Display& display,
+                               uint32_t metrics) override;
 
   int64_t display_id_;
   gfx::Screen* screen_;
   gfx::Rect work_area_;
   aura::Window* root_window_;
   ShelfLayoutManager* shelf_;
   int system_tray_height_;
 
   DISALLOW_COPY_AND_ASSIGN(AshPopupAlignmentDelegate);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_