Remove ZeroPole class and files

third_party/WebKit/Source/platform/audio/DynamicsCompressor.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 13 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DynamicsCompressor_h
 #define DynamicsCompressor_h
 
 #include "platform/audio/AudioArray.h"
 #include "platform/audio/DynamicsCompressorKernel.h"
-#include "platform/audio/ZeroPole.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
 #include <memory>
 
 namespace blink {
 
 class AudioBus;
 
 // DynamicsCompressor implements a flexible audio dynamics compression effect
 // such as is commonly used in musical production and game audio. It lowers the
@@ skipping 61 matching lines @@
   std::unique_ptr<const float* []> m_sourceChannels;
   std::unique_ptr<float* []> m_destinationChannels;
 
   // The core compressor.
   DynamicsCompressorKernel m_compressor;
 };
 
 }  // namespace blink
 
 #endif  // DynamicsCompressor_h