Fix Chromium clang plugin warnings

webrtc/modules/audio_processing/splitting_filter.cc

 /*
  *  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.
  */
 
@@ skipping 13 matching lines @@
   if (num_bands_ == 2) {
     two_bands_states_.resize(num_channels);
   } else if (num_bands_ == 3) {
     for (size_t i = 0; i < num_channels; ++i) {
       three_band_filter_banks_.push_back(std::unique_ptr<ThreeBandFilterBank>(
           new ThreeBandFilterBank(num_frames)));
     }
   }
 }
 
+SplittingFilter::~SplittingFilter() = default;
+
 void SplittingFilter::Analysis(const IFChannelBuffer* data,
                                IFChannelBuffer* bands) {
   RTC_DCHECK_EQ(num_bands_, bands->num_bands());
   RTC_DCHECK_EQ(data->num_channels(), bands->num_channels());
   RTC_DCHECK_EQ(data->num_frames(),
                 bands->num_frames_per_band() * bands->num_bands());
   if (bands->num_bands() == 2) {
     TwoBandsAnalysis(data, bands);
   } else if (bands->num_bands() == 3) {
     ThreeBandsAnalysis(data, bands);
@@ skipping 53 matching lines @@
                                           IFChannelBuffer* data) {
   RTC_DCHECK_LE(data->num_channels(), three_band_filter_banks_.size());
   for (size_t i = 0; i < data->num_channels(); ++i) {
     three_band_filter_banks_[i]->Synthesis(bands->fbuf_const()->bands(i),
                                            bands->num_frames_per_band(),
                                            data->fbuf()->channels()[i]);
   }
 }
 
 }  // namespace webrtc