Standardize usage of virtual/override/final in remoting/

remoting/host/fake_desktop_capturer.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 REMOTING_HOST_FAKE_DESKTOP_CAPTURER_H_
 #define REMOTING_HOST_FAKE_DESKTOP_CAPTURER_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
@@ skipping 11 matching lines @@
   // By default FakeDesktopCapturer generates frames of size kWidth x kHeight,
   // but custom frame generator set using set_frame_generator() may generate
   // frames of different size.
   static const int kWidth = 800;
   static const int kHeight = 600;
 
   typedef base::Callback<scoped_ptr<webrtc::DesktopFrame>(
       webrtc::DesktopCapturer::Callback* callback)> FrameGenerator;
 
   FakeDesktopCapturer();
-  virtual ~FakeDesktopCapturer();
+  ~FakeDesktopCapturer() override;
 
   void set_frame_generator(const FrameGenerator& frame_generator);
 
   // webrtc::DesktopCapturer interface.
-  virtual void Start(Callback* callback) override;
-  virtual void Capture(const webrtc::DesktopRegion& rect) override;
+  void Start(Callback* callback) override;
+  void Capture(const webrtc::DesktopRegion& rect) override;
 
  private:
   FrameGenerator frame_generator_;
 
   Callback* callback_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeDesktopCapturer);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_FAKE_DESKTOP_CAPTURER_H_