Remove emphasis/de-emphasis filters from DynamicsCompressor.

Source/platform/audio/DynamicsCompressor.h

Index: Source/platform/audio/DynamicsCompressor.h
diff --git a/Source/platform/audio/DynamicsCompressor.h b/Source/platform/audio/DynamicsCompressor.h
index 99269b3e02fa3fc975a6a761e9cac9b7a2a31875..1f9fd703e7cf28750927ec893dbc2e0ec9a22229 100644
--- a/Source/platform/audio/DynamicsCompressor.h
+++ b/Source/platform/audio/DynamicsCompressor.h
@@ -96,20 +96,9 @@ protected:
     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;
 };