Replace scoped_ptr with std::unique_ptr in //media.

media/midi/usb_midi_device.h

Index: media/midi/usb_midi_device.h
diff --git a/media/midi/usb_midi_device.h b/media/midi/usb_midi_device.h
index 67455d1be6bb8aaf9e25e3a1bd29418e440ea7a2..5220b807b13810e0ab6488de408122d2b4d6122e 100644
--- a/media/midi/usb_midi_device.h
+++ b/media/midi/usb_midi_device.h
@@ -8,10 +8,10 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <vector>
 
 #include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/time/time.h"
 #include "media/midi/usb_midi_export.h"
@@ -36,7 +36,7 @@ class USB_MIDI_EXPORT UsbMidiDeviceDelegate {
                                   base::TimeTicks time) = 0;
 
   // Called when a USB-MIDI device is attached.
-  virtual void OnDeviceAttached(scoped_ptr<UsbMidiDevice> device) = 0;
+  virtual void OnDeviceAttached(std::unique_ptr<UsbMidiDevice> device) = 0;
   // Called when a USB-MIDI device is detached.
   virtual void OnDeviceDetached(size_t index) = 0;
 };