Standardize usage of virtual/override/final in remoting/

remoting/host/mouse_clamping_filter.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 REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_
 #define REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_
 
 #include "base/compiler_specific.h"
 #include "remoting/protocol/mouse_input_filter.h"
 #include "remoting/protocol/video_stub.h"
 
 namespace remoting {
 
 // Filtering VideoStub implementation which configures a MouseInputFilter to
 // clamp mouse events to fall within the dimensions of the most-recently
 // received video frame.
 class MouseClampingFilter : public protocol::VideoStub {
  public:
   explicit MouseClampingFilter(protocol::InputStub* input_stub);
-  virtual ~MouseClampingFilter();
+  ~MouseClampingFilter() override;
 
   protocol::InputStub* input_filter() { return &input_filter_; }
 
   void set_video_stub(protocol::VideoStub* video_stub) {
     video_stub_ = video_stub;
   }
 
   // protocol::VideoStub implementation.
-  virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
-                                  const base::Closure& done) override;
+  void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
+                          const base::Closure& done) override;
 
  private:
   // Clamps mouse event coordinates to the video dimensions.
   protocol::MouseInputFilter input_filter_;
 
   protocol::VideoStub* video_stub_;
 
   DISALLOW_COPY_AND_ASSIGN(MouseClampingFilter);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_