Remove emphasis/de-emphasis filters from DynamicsCompressor.

Source/platform/audio/DynamicsCompressorKernel.cpp

 /*
  * 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 183 matching lines @@
         m_kneeThresholdDb = dbThreshold + dbKnee;
         m_kneeThreshold = decibelsToLinear(m_kneeThresholdDb);
 
         m_ykneeThresholdDb = linearToDecibels(kneeCurve(m_kneeThreshold, k));
 
         m_K = k;
     }
     return m_K;
 }
 
-void DynamicsCompressorKernel::process(float* sourceChannels[],
+void DynamicsCompressorKernel::process(const float* sourceChannels[],
                                        float* destinationChannels[],
                                        unsigned numberOfChannels,
                                        unsigned framesToProcess,
 
                                        float dbThreshold,
                                        float dbKnee,
                                        float ratio,
                                        float attackTime,
                                        float releaseTime,
                                        float preDelayTime,
@@ skipping 255 matching lines @@
 
     m_preDelayReadIndex = 0;
     m_preDelayWriteIndex = DefaultPreDelayFrames;
 
     m_maxAttackCompressionDiffDb = -1; // uninitialized state
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)