Fix Chromium clang plugin warnings

webrtc/modules/audio_processing/test/test_utils.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 29 matching lines @@
  private:
   FILE* file_handle_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(RawFile);
 };
 
 // Reads ChannelBuffers from a provided WavReader.
 class ChannelBufferWavReader final {
  public:
   explicit ChannelBufferWavReader(std::unique_ptr<WavReader> file);
+  ~ChannelBufferWavReader();
 
   // Reads data from the file according to the |buffer| format. Returns false if
   // a full buffer can't be read from the file.
   bool Read(ChannelBuffer<float>* buffer);
 
  private:
   std::unique_ptr<WavReader> file_;
   std::vector<float> interleaved_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(ChannelBufferWavReader);
 };
 
 // Writes ChannelBuffers to a provided WavWriter.
 class ChannelBufferWavWriter final {
  public:
   explicit ChannelBufferWavWriter(std::unique_ptr<WavWriter> file);
+  ~ChannelBufferWavWriter();
+
   void Write(const ChannelBuffer<float>& buffer);
 
  private:
   std::unique_ptr<WavWriter> file_;
   std::vector<float> interleaved_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(ChannelBufferWavWriter);
 };
 
 void WriteIntData(const int16_t* data,
@@ skipping 70 matching lines @@
 // appropriate error message has been printed to stdout.
 std::vector<Point> ParseArrayGeometry(const std::string& mic_positions,
                                       size_t num_mics);
 
 // Same as above, but without the num_mics check for when it isn't available.
 std::vector<Point> ParseArrayGeometry(const std::string& mic_positions);
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_TEST_TEST_UTILS_H_