Revert of Replace scoped_ptr with unique_ptr in webrtc/common_audio/

webrtc/common_audio/blocker.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_INTERNAL_BEAMFORMER_BLOCKER_H_
 #define WEBRTC_INTERNAL_BEAMFORMER_BLOCKER_H_
 
-#include <memory>
-
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/audio_ring_buffer.h"
 #include "webrtc/common_audio/channel_buffer.h"
 
 namespace webrtc {
 
 // The callback function to process audio in the time domain. Input has already
 // been windowed, and output will be windowed. The number of input channels
 // must be >= the number of output channels.
 class BlockerCallback {
  public:
@@ skipping 77 matching lines @@
   // AudioRingBuffer for the output.
   AudioRingBuffer input_buffer_;
   ChannelBuffer<float> output_buffer_;
 
   // Space for the input block (can't wrap because of windowing).
   ChannelBuffer<float> input_block_;
 
   // Space for the output block (can't wrap because of overlap/add).
   ChannelBuffer<float> output_block_;
 
-  std::unique_ptr<float[]> window_;
+  rtc::scoped_ptr<float[]> window_;
 
   // The amount of frames between the start of contiguous blocks. For example,
   // |shift_amount_| = |block_size_| / 2 for a Hann window.
   size_t shift_amount_;
 
   BlockerCallback* callback_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_INTERNAL_BEAMFORMER_BLOCKER_H_