Standardize usage of virtual/override/final in mojo/

mojo/services/native_viewport/native_viewport_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 MOJO_SERVICES_NATIVE_VIEWPORT_IMPL_H_
 #define MOJO_SERVICES_NATIVE_VIEWPORT_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/surfaces/surface_id.h"
 #include "mojo/services/native_viewport/platform_viewport.h"
 #include "mojo/services/public/interfaces/gpu/gpu.mojom.h"
 #include "mojo/services/public/interfaces/native_viewport/native_viewport.mojom.h"
 #include "mojo/services/public/interfaces/surfaces/surfaces_service.mojom.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace ui {
 class Event;
 }
 
 namespace mojo {
 class ApplicationImpl;
 class ViewportSurface;
 
 class NativeViewportImpl : public InterfaceImpl<NativeViewport>,
                            public PlatformViewport::Delegate {
  public:
   NativeViewportImpl(ApplicationImpl* app, bool is_headless);
-  virtual ~NativeViewportImpl();
+  ~NativeViewportImpl() override;
 
   // InterfaceImpl<NativeViewport> implementation.
-  virtual void Create(SizePtr size,
-                      const Callback<void(uint64_t)>& callback) override;
-  virtual void Show() override;
-  virtual void Hide() override;
-  virtual void Close() override;
-  virtual void SetSize(SizePtr size) override;
-  virtual void SubmittedFrame(SurfaceIdPtr surface_id) override;
+  void Create(SizePtr size, const Callback<void(uint64_t)>& callback) override;
+  void Show() override;
+  void Hide() override;
+  void Close() override;
+  void SetSize(SizePtr size) override;
+  void SubmittedFrame(SurfaceIdPtr surface_id) override;
 
   // PlatformViewport::Delegate implementation.
-  virtual void OnBoundsChanged(const gfx::Rect& bounds) override;
-  virtual void OnAcceleratedWidgetAvailable(
-      gfx::AcceleratedWidget widget) override;
-  virtual bool OnEvent(ui::Event* ui_event) override;
-  virtual void OnDestroyed() override;
+  void OnBoundsChanged(const gfx::Rect& bounds) override;
+  void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) override;
+  bool OnEvent(ui::Event* ui_event) override;
+  void OnDestroyed() override;
 
   void AckEvent();
 
  private:
   void ProcessOnBoundsChanged();
 
   bool is_headless_;
   scoped_ptr<PlatformViewport> platform_viewport_;
   scoped_ptr<ViewportSurface> viewport_surface_;
   uint64_t widget_id_;
   gfx::Size size_;
   GpuPtr gpu_service_;
   SurfacesServicePtr surfaces_service_;
   cc::SurfaceId child_surface_id_;
   bool waiting_for_event_ack_;
   Callback<void(uint64_t)> create_callback_;
   base::WeakPtrFactory<NativeViewportImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewportImpl);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NATIVE_VIEWPORT_IMPL_H_