Standardize usage of virtual/override/final specifiers.

ash/shell/keyboard_controller_proxy_stub.h

 // Copyright 2013 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_KEYBOARD_CONTROLLER_PROXY_STUB_H_
 #define ASH_SHELL_KEYBOARD_CONTROLLER_PROXY_STUB_H_
 
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/keyboard/keyboard_controller_proxy.h"
 
 namespace aura {
 class Window;
 }  // namespace aura
 
 namespace ash {
 
 // Stub implementation of KeyboardControllerProxy
 class KeyboardControllerProxyStub : public keyboard::KeyboardControllerProxy {
  public:
   KeyboardControllerProxyStub();
-  virtual ~KeyboardControllerProxyStub();
+  ~KeyboardControllerProxyStub() override;
 
-  virtual bool HasKeyboardWindow() const override;
-  virtual aura::Window* GetKeyboardWindow() override;
+  bool HasKeyboardWindow() const override;
+  aura::Window* GetKeyboardWindow() override;
 
  private:
   // Overridden from keyboard::KeyboardControllerProxy:
-  virtual content::BrowserContext* GetBrowserContext() override;
-  virtual ui::InputMethod* GetInputMethod() override;
-  virtual void RequestAudioInput(content::WebContents* web_contents,
+  content::BrowserContext* GetBrowserContext() override;
+  ui::InputMethod* GetInputMethod() override;
+  void RequestAudioInput(
+      content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) override;
-  virtual void LoadSystemKeyboard() override;
-  virtual void ReloadKeyboardIfNeeded() override;
+  void LoadSystemKeyboard() override;
+  void ReloadKeyboardIfNeeded() override;
 
   aura::test::TestWindowDelegate delegate_;
   scoped_ptr<aura::Window> keyboard_;
   DISALLOW_COPY_AND_ASSIGN(KeyboardControllerProxyStub);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_KEYBOARD_CONTROLLER_PROXY_STUB_H_