Replace scoped_ptr with unique_ptr in webrtc/modules/audio_processing/transient/

webrtc/modules/audio_processing/transient/wpd_tree.h

 /*
  *  Copyright (c) 2013 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_MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_TREE_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_TREE_H_
 
-#include "webrtc/base/scoped_ptr.h"
+#include <memory>
+
 #include "webrtc/modules/audio_processing/transient/wpd_node.h"
 
 namespace webrtc {
 
 // Tree of a Wavelet Packet Decomposition (WPD).
 //
 // The root node contains all the data provided; for each node in the tree, the
 // left child contains the approximation coefficients extracted from the node,
 // and the right child contains the detail coefficients.
 // It preserves its state, so it can be multiple-called.
@@ skipping 51 matching lines @@
   // Returns the total number of nodes.
   int num_nodes() const { return num_nodes_; }
 
   // Returns the total number of leaves.
   int num_leaves() const { return 1 << levels_; }
 
  private:
   size_t data_length_;
   int levels_;
   int num_nodes_;
-  rtc::scoped_ptr<rtc::scoped_ptr<WPDNode>[]> nodes_;
+  std::unique_ptr<std::unique_ptr<WPDNode>[]> nodes_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_TREE_H_