Replace scoped_ptr with unique_ptr in webrtc/common_audio/

webrtc/common_audio/real_fourier.h

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_COMMON_AUDIO_REAL_FOURIER_H_
 #define WEBRTC_COMMON_AUDIO_REAL_FOURIER_H_
 
 #include <complex>
+#include <memory>
 
-#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/system_wrappers/include/aligned_malloc.h"
 
 // Uniform interface class for the real DFT and its inverse, for power-of-2
 // input lengths. Also contains helper functions for buffer allocation, taking
 // care of any memory alignment requirements the underlying library might have.
 
 namespace webrtc {
 
 class RealFourier {
  public:
   // Shorthand typenames for the scopers used by the buffer allocation helpers.
-  typedef rtc::scoped_ptr<float[], AlignedFreeDeleter> fft_real_scoper;
-  typedef rtc::scoped_ptr<std::complex<float>[], AlignedFreeDeleter>
+  typedef std::unique_ptr<float[], AlignedFreeDeleter> fft_real_scoper;
+  typedef std::unique_ptr<std::complex<float>[], AlignedFreeDeleter>
       fft_cplx_scoper;
 
   // The alignment required for all input and output buffers, in bytes.
   static const size_t kFftBufferAlignment;
 
   // Construct a wrapper instance for the given input order, which must be
   // between 1 and kMaxFftOrder, inclusively.
-  static rtc::scoped_ptr<RealFourier> Create(int fft_order);
+  static std::unique_ptr<RealFourier> Create(int fft_order);
   virtual ~RealFourier() {};
 
   // Helper to compute the smallest FFT order (a power of 2) which will contain
   // the given input length.
   static int FftOrder(size_t length);
 
   // Helper to compute the input length from the FFT order.
   static size_t FftLength(int order);
 
   // Helper to compute the exact length, in complex floats, of the transform
@@ skipping 18 matching lines @@
   // not needed.
   virtual void Inverse(const std::complex<float>* src, float* dest) const = 0;
 
   virtual int order() const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_AUDIO_REAL_FOURIER_H_