Standardize usage of virtual/override/final in remoting/

remoting/client/plugin/pepper_audio_player.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_CLIENT_PLUGIN_PEPPER_AUDIO_PLAYER_H_
 #define REMOTING_CLIENT_PLUGIN_PEPPER_AUDIO_PLAYER_H_
 
 #include "base/callback.h"
 #include "ppapi/cpp/audio.h"
 #include "ppapi/cpp/instance.h"
 #include "remoting/client/audio_player.h"
 #include "remoting/proto/audio.pb.h"
 
 namespace remoting {
 
 class PepperAudioPlayer : public AudioPlayer {
  public:
   explicit PepperAudioPlayer(pp::Instance* instance);
-  virtual ~PepperAudioPlayer();
+  ~PepperAudioPlayer() override;
 
-  virtual uint32 GetSamplesPerFrame() override;
+  uint32 GetSamplesPerFrame() override;
 
-  virtual bool ResetAudioPlayer(AudioPacket::SamplingRate sampling_rate)
-      override;
+  bool ResetAudioPlayer(AudioPacket::SamplingRate sampling_rate) override;
 
  private:
   pp::Instance* instance_;
   pp::Audio audio_;
 
   // The count of sample frames per channel in an audio buffer.
   uint32 samples_per_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperAudioPlayer);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_AUDIO_PLAYER_H_