Do not use vector<scoped_ptr<>>.

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"
-#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "base/threading/thread.h"
 #include "media/midi/midi_manager.h"
 
 namespace media {
 
 class MidiManagerWin : public MidiManager {
  public:
   MidiManagerWin();
   virtual ~MidiManagerWin();
 
   // MidiManager implementation.
   virtual void StartInitialization() override;
   virtual void DispatchSendMidiData(MidiManagerClient* client,
                                     uint32 port_index,
                                     const std::vector<uint8>& data,
                                     double timestamp) override;
 
  private:
   class InDeviceInfo;
   class OutDeviceInfo;
-  std::vector<scoped_ptr<InDeviceInfo> > in_devices_;
-  std::vector<scoped_ptr<OutDeviceInfo> > out_devices_;
+  ScopedVector<InDeviceInfo> in_devices_;
+  ScopedVector<OutDeviceInfo> out_devices_;
   base::Thread send_thread_;
   DISALLOW_COPY_AND_ASSIGN(MidiManagerWin);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MIDI_MIDI_MANAGER_WIN_H_