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

media/base/audio_converter_perftest.cc

Index: media/base/audio_converter_perftest.cc
diff --git a/media/base/audio_converter_perftest.cc b/media/base/audio_converter_perftest.cc
index 92bff2913084b427ae96987cf0f5a4bb0cf1e591..092688e11be4b36025a474b89a1d52e45fcf1d6a 100644
--- a/media/base/audio_converter_perftest.cc
+++ b/media/base/audio_converter_perftest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <memory>
+
 #include "base/time/time.h"
 #include "media/base/audio_converter.h"
 #include "media/base/fake_audio_render_callback.h"
@@ -32,7 +34,7 @@ void RunConvertBenchmark(const AudioParameters& in_params,
   NullInputProvider fake_input1;
   NullInputProvider fake_input2;
   NullInputProvider fake_input3;
-  scoped_ptr<AudioBus> output_bus = AudioBus::Create(out_params);
+  std::unique_ptr<AudioBus> output_bus = AudioBus::Create(out_params);
 
   AudioConverter converter(in_params, out_params, !fifo);
   converter.AddInput(&fake_input1);