Standardize usage of virtual/override/final in media/

media/midi/midi_manager_mac.h

 // Copyright (c) 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_MAC_H_
 #define MEDIA_MIDI_MIDI_MANAGER_MAC_H_
 
 #include <CoreMIDI/MIDIServices.h>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/threading/thread.h"
 #include "media/midi/midi_manager.h"
 #include "media/midi/midi_port_info.h"
 
 namespace media {
 
 class MEDIA_EXPORT MidiManagerMac : public MidiManager {
  public:
   MidiManagerMac();
-  virtual ~MidiManagerMac();
+  ~MidiManagerMac() override;
 
   // MidiManager implementation.
-  virtual void StartInitialization() override;
-  virtual void DispatchSendMidiData(MidiManagerClient* client,
-                                    uint32 port_index,
-                                    const std::vector<uint8>& data,
-                                    double timestamp) override;
+  void StartInitialization() override;
+  void DispatchSendMidiData(MidiManagerClient* client,
+                            uint32 port_index,
+                            const std::vector<uint8>& data,
+                            double timestamp) override;
 
  private:
   // Runs a closure on |client_thread_|. It starts the thread if it isn't
   // running and the destructor isn't called.
   // Caller can bind base::Unretained(this) to |closure| since we join
   // |client_thread_| in the destructor.
   void RunOnClientThread(const base::Closure& closure);
 
   // Initializes CoreMIDI on |client_thread_| asynchronously. Called from
   // StartInitialization().
@@ skipping 37 matching lines @@
 
   // Sets true on destructing object to avoid starting |client_thread_| again.
   bool shutdown_;
 
   DISALLOW_COPY_AND_ASSIGN(MidiManagerMac);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MIDI_MIDI_MANAGER_MAC_H_