Standardize usage of virtual/override/final specifiers.

ash/wm/wm_event.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_WM_WM_EVENT_H_
 #define ASH_WM_WM_EVENT_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/wm_types.h"
 #include "ui/gfx/rect.h"
@@ skipping 87 matching lines @@
 
  private:
   WMEventType type_;
   DISALLOW_COPY_AND_ASSIGN(WMEvent);
 };
 
 // An WMEvent to request new bounds for the window.
 class SetBoundsEvent : public WMEvent {
 public:
   SetBoundsEvent(WMEventType type, const gfx::Rect& requested_bounds);
-  virtual ~SetBoundsEvent();
+  ~SetBoundsEvent() override;
 
   const gfx::Rect& requested_bounds() const { return requested_bounds_; }
 
  private:
   gfx::Rect requested_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(SetBoundsEvent);
 };
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WM_EVENT_H_