Use Resampler default constructor in VAD

webrtc/modules/audio_processing/vad/voice_activity_detector.cc

 /*
  *  Copyright (c) 2015 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.
  */
 
@@ skipping 10 matching lines @@
 const int kNumChannels = 1;
 
 const double kDefaultVoiceValue = 1.0;
 const double kNeutralProbability = 0.5;
 const double kLowProbability = 0.01;
 
 }  // namespace
 
 VoiceActivityDetector::VoiceActivityDetector()
     : last_voice_probability_(kDefaultVoiceValue),
-      // Initialize to the most common resampling situation.
-      resampler_(kMaxLength, kLength10Ms, kNumChannels),
       standalone_vad_(StandaloneVad::Create()) {
 }
 
 // Because ISAC has a different chunk length, it updates
 // |chunkwise_voice_probabilities_| and |chunkwise_rms_| when there is new data.
 // Otherwise it clears them.
 void VoiceActivityDetector::ProcessChunk(const int16_t* audio,
                                          int length,
                                          int sample_rate_hz) {
   DCHECK_EQ(length, sample_rate_hz / 100);
@@ skipping 35 matching lines @@
           0);
       CHECK_GE(pitch_based_vad_.VoicingProbability(
                    features_, &chunkwise_voice_probabilities_[0]),
                0);
     }
     last_voice_probability_ = chunkwise_voice_probabilities_.back();
   }
 }
 
 }  // namespace webrtc