Fix Chromium clang plugin warnings

webrtc/modules/audio_processing/beamformer/nonlinear_beamformer.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.
  */
 
@@ skipping 45 matching lines @@
 // Beamforming Postprocessor" by Bastiaan Kleijn.
 class NonlinearBeamformer : public LappedTransform::Callback {
  public:
   static const float kHalfBeamWidthRadians;
 
   explicit NonlinearBeamformer(
       const std::vector<Point>& array_geometry,
       size_t num_postfilter_channels = 1u,
       SphericalPointf target_direction =
           SphericalPointf(static_cast<float>(M_PI) / 2.f, 0.f, 1.f));
+  ~NonlinearBeamformer() override;
 
   // Sample rate corresponds to the lower band.
   // Needs to be called before the NonlinearBeamformer can be used.
   virtual void Initialize(int chunk_size_ms, int sample_rate_hz);
 
   // Analyzes one time-domain chunk of audio. The audio is expected to be split
   // into frequency bands inside the ChannelBuffer. The number of frames and
   // channels must correspond to the constructor parameters.
   virtual void AnalyzeChunk(const ChannelBuffer<float>& data);
 
   // Applies the postfilter mask to one chunk of audio. The audio is expected to
   // be split into frequency bands inside the ChannelBuffer. The number of
   // frames and channels must correspond to the constructor parameters.
   virtual void PostFilter(ChannelBuffer<float>* data);
 
   virtual void AimAt(const SphericalPointf& target_direction);
 
   virtual bool IsInBeam(const SphericalPointf& spherical_point);
 
   // After processing each block |is_target_present_| is set to true if the
   // target signal es present and to false otherwise. This methods can be called
   // to know if the data is target signal or interference and process it
   // accordingly.
-  virtual bool is_target_present() { return is_target_present_; }
+  virtual bool is_target_present();
 
  protected:
   // Process one frequency-domain block of audio. This is where the fun
   // happens. Implements LappedTransform::Callback.
   void ProcessAudioBlock(const complex<float>* const* input,
                          size_t num_input_channels,
                          size_t num_freq_bins,
                          size_t num_output_channels,
                          complex<float>* const* output) override;
 
@@ skipping 118 matching lines @@
   // Number of blocks after which the data is considered interference if the
   // mask does not pass |kMaskSignalThreshold|.
   size_t hold_target_blocks_;
   // Number of blocks since the last mask that passed |kMaskSignalThreshold|.
   size_t interference_blocks_count_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_BEAMFORMER_NONLINEAR_BEAMFORMER_H_