Standardize usage of virtual/override/final specifiers.

ash/shell/toplevel_window.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_SHELL_TOPLEVEL_WINDOW_H_
 #define ASH_SHELL_TOPLEVEL_WINDOW_H_
 
 #include "ui/views/widget/widget_delegate.h"
 
 namespace ash {
 namespace shell {
 
 class ToplevelWindow : public views::WidgetDelegateView {
  public:
   struct CreateParams {
     CreateParams();
 
     bool can_resize;
     bool can_maximize;
   };
   static views::Widget* CreateToplevelWindow(
       const CreateParams& params);
 
   // Clears saved show state and bounds used to position
   // a new window.
   static void ClearSavedStateForTest();
 
  private:
   explicit ToplevelWindow(const CreateParams& params);
-  virtual ~ToplevelWindow();
+  ~ToplevelWindow() override;
 
   // Overridden from views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
   // Overridden from views::WidgetDelegate:
-  virtual base::string16 GetWindowTitle() const override;
-  virtual void SaveWindowPlacement(
-      const gfx::Rect& bounds,
-      ui::WindowShowState show_state) override;
-  virtual bool GetSavedWindowPlacement(
-      const views::Widget* widget,
-      gfx::Rect* bounds,
-      ui::WindowShowState* show_state) const override;
-  virtual View* GetContentsView() override;
-  virtual bool CanResize() const override;
-  virtual bool CanMaximize() const override;
-  virtual bool CanMinimize() const override;
+  base::string16 GetWindowTitle() const override;
+  void SaveWindowPlacement(const gfx::Rect& bounds,
+                           ui::WindowShowState show_state) override;
+  bool GetSavedWindowPlacement(const views::Widget* widget,
+                               gfx::Rect* bounds,
+                               ui::WindowShowState* show_state) const override;
+  View* GetContentsView() override;
+  bool CanResize() const override;
+  bool CanMaximize() const override;
+  bool CanMinimize() const override;
 
   const CreateParams params_;
 
   DISALLOW_COPY_AND_ASSIGN(ToplevelWindow);
 };
 
 }  // namespace shell
 }  // namespace ash
 
 #endif  // ASH_SHELL_TOPLEVEL_WINDOW_H_