Fix Chromium clang plugin warnings

webrtc/modules/audio_processing/beamformer/nonlinear_beamformer.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 204 matching lines @@
       array_normal_(GetArrayNormalIfExists(array_geometry)),
       min_mic_spacing_(GetMinimumSpacing(array_geometry)),
       target_angle_radians_(target_direction.azimuth()),
       away_radians_(std::min(
           static_cast<float>(M_PI),
           std::max(kMinAwayRadians,
                    kAwaySlope * static_cast<float>(M_PI) / min_mic_spacing_))) {
   WindowGenerator::KaiserBesselDerived(kKbdAlpha, kFftSize, window_);
 }
 
+NonlinearBeamformer::~NonlinearBeamformer() = default;
+
 void NonlinearBeamformer::Initialize(int chunk_size_ms, int sample_rate_hz) {
   chunk_length_ =
       static_cast<size_t>(sample_rate_hz / (1000.f / chunk_size_ms));
   sample_rate_hz_ = sample_rate_hz;
 
   high_pass_postfilter_mask_ = 1.f;
   is_target_present_ = false;
   hold_target_blocks_ = kHoldTargetSeconds * 2 * sample_rate_hz / kFftSize;
   interference_blocks_count_ = hold_target_blocks_;
 
@@ skipping 196 matching lines @@
   NormalizeCovMats();
 }
 
 bool NonlinearBeamformer::IsInBeam(const SphericalPointf& spherical_point) {
   // If more than half-beamwidth degrees away from the beam's center,
   // you are out of the beam.
   return fabs(spherical_point.azimuth() - target_angle_radians_) <
          kHalfBeamWidthRadians;
 }
 
+bool NonlinearBeamformer::is_target_present() { return is_target_present_; }
+
 void NonlinearBeamformer::ProcessAudioBlock(const complex_f* const* input,
                                             size_t num_input_channels,
                                             size_t num_freq_bins,
                                             size_t num_output_channels,
                                             complex_f* const* output) {
   RTC_CHECK_EQ(kNumFreqBins, num_freq_bins);
   RTC_CHECK_EQ(num_input_channels_, num_input_channels);
   RTC_CHECK_EQ(0u, num_output_channels);
 
   // Calculating the post-filter masks. Note that we need two for each
@@ skipping 133 matching lines @@
                    new_mask_ + high_mean_end_bin_ + 1);
   if (new_mask_[quantile] > kMaskTargetThreshold) {
     is_target_present_ = true;
     interference_blocks_count_ = 0;
   } else {
     is_target_present_ = interference_blocks_count_++ < hold_target_blocks_;
   }
 }
 
 }  // namespace webrtc