Remove emphasis/de-emphasis filters from DynamicsCompressor.

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 78 matching lines @@
     float m_parameters[ParamLast];
     void initializeParameters();
 
     float m_sampleRate;
 
     // Emphasis filter controls.
     float m_lastFilterStageRatio;
     float m_lastAnchor;
     float m_lastFilterStageGain;
 
-    typedef struct {
-        ZeroPole filters[4];
-    } ZeroPoleFilterPack4;
-
-    // Per-channel emphasis filters.
-    Vector<OwnPtr<ZeroPoleFilterPack4> > m_preFilterPacks;
-    Vector<OwnPtr<ZeroPoleFilterPack4> > m_postFilterPacks;
-
     OwnPtr<const float*[]> m_sourceChannels;
     OwnPtr<float*[]> m_destinationChannels;
 
-    void setEmphasisStageParameters(unsigned stageIndex, float gain, float normalizedFrequency /* 0 -> 1 */);
-    void setEmphasisParameters(float gain, float anchorFreq, float filterStageRatio);
-
     // The core compressor.
     DynamicsCompressorKernel m_compressor;
 };
 
 } // namespace WebCore
 
 #endif // DynamicsCompressor_h