Standardize usage of virtual/override/final specifiers.

ui/views/controls/separator.h

 // Copyright (c) 2011 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_SEPARATOR_H_
 #define UI_VIEWS_CONTROLS_SEPARATOR_H_
 
 #include <string>
 
 #include "ui/views/view.h"
 
 namespace views {
 
 // The Separator class is a view that shows a line used to visually separate
 // other views.
 
 class VIEWS_EXPORT Separator : public View {
  public:
   enum Orientation {
     HORIZONTAL,
     VERTICAL
   };
 
   // The separator's class name.
   static const char kViewClassName[];
 
   explicit Separator(Orientation orientation);
-  virtual ~Separator();
+  ~Separator() override;
 
   // Overridden from View:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual void GetAccessibleState(ui::AXViewState* state) override;
-  virtual void Paint(gfx::Canvas* canvas,
-                     const views::CullSet& cull_set) override;
-  virtual const char* GetClassName() const override;
+  gfx::Size GetPreferredSize() const override;
+  void GetAccessibleState(ui::AXViewState* state) override;
+  void Paint(gfx::Canvas* canvas, const views::CullSet& cull_set) override;
+  const char* GetClassName() const override;
 
  private:
   const Orientation orientation_;
 
   DISALLOW_COPY_AND_ASSIGN(Separator);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_SEPARATOR_H_