Web MIDI: style clean up

media/midi/midi_manager_win.h

 // Copyright 2013 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 MEDIA_MIDI_MIDI_MANAGER_WIN_H_
 #define MEDIA_MIDI_MIDI_MANAGER_WIN_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 21 matching lines @@
  public:
   virtual ~MidiServiceWin() {}
   // This method may return before the initialization is completed.
   virtual void InitializeAsync(MidiServiceWinDelegate* delegate) = 0;
   // This method may return before the specified data is actually sent.
   virtual void SendMidiDataAsync(uint32 port_number,
                                  const std::vector<uint8>& data,
                                  base::TimeTicks time) = 0;
 };
 
-class MidiManagerWin : public MidiManager, public MidiServiceWinDelegate {
+class MidiManagerWin final : public MidiManager, public MidiServiceWinDelegate {
  public:
   MidiManagerWin() {}
   virtual ~MidiManagerWin() { midi_service_.reset(); }
 
   // MidiManager overrides:
   void StartInitialization() final;
   void DispatchSendMidiData(MidiManagerClient* client,
                             uint32 port_index,
                             const std::vector<uint8>& data,
                             double timestamp) final;
@@ skipping 17 matching lines @@
   }
 
  private:
   scoped_ptr<MidiServiceWin> midi_service_;
   DISALLOW_COPY_AND_ASSIGN(MidiManagerWin);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MIDI_MIDI_MANAGER_WIN_H_