C++11 override style change for athena

athena/screen/screen_manager_impl.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 ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_
 #define ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_
 
 #include "athena/athena_export.h"
 #include "athena/screen/public/screen_manager.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 10 matching lines @@
 class ScopedCaptureClient;
 }
 
 namespace athena {
 class AcceleratorHandler;
 
 class ATHENA_EXPORT ScreenManagerImpl : public ScreenManager,
                                         public aura::client::WindowTreeClient {
  public:
   explicit ScreenManagerImpl(aura::Window* root_window);
-  virtual ~ScreenManagerImpl();
+  ~ScreenManagerImpl() override;
 
   void Init();
 
   // Returns a container which has |priority|. Null if such container
   // doesn't exist.
   aura::Window* FindContainerByPriority(int priority);
 
  private:
   // ScreenManager:
   virtual aura::Window* CreateContainer(const ContainerParams& params) override;
@@ skipping 21 matching lines @@
 
   gfx::Display::Rotation last_requested_rotation_;
   bool rotation_locked_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenManagerImpl);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_