Remove emphasis/de-emphasis filters from DynamicsCompressor.

Source/platform/audio/DynamicsCompressorKernel.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 27 matching lines @@
 namespace WebCore {
 
 class PLATFORM_EXPORT DynamicsCompressorKernel {
     WTF_MAKE_NONCOPYABLE(DynamicsCompressorKernel);
 public:
     DynamicsCompressorKernel(float sampleRate, unsigned numberOfChannels);
 
     void setNumberOfChannels(unsigned);
 
     // Performs stereo-linked compression.
-    void process(float* sourceChannels[],
+    void process(const float* sourceChannels[],
                  float* destinationChannels[],
                  unsigned numberOfChannels,
                  unsigned framesToProcess,
 
                  float dbThreshold,
                  float dbKnee,
                  float ratio,
                  float attackTime,
                  float releaseTime,
                  float preDelayTime,
@@ skipping 63 matching lines @@
     float m_kneeThresholdDb;
     float m_ykneeThresholdDb;
 
     // Internal parameter for the knee portion of the curve.
     float m_K;
 };
 
 } // namespace WebCore
 
 #endif // DynamicsCompressorKernel_h