Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/platform/audio/ZeroPole.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
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 #include "platform/audio/ZeroPole.h"
-
-#if ENABLE(WEB_AUDIO)
 #include "platform/audio/DenormalDisabler.h"
 
 namespace blink {
 
 void ZeroPole::process(const float *source, float *destination, unsigned framesToProcess)
 {
     float zero = m_zero;
     float pole = m_pole;
 
     // Gain compensation to make 0dB @ 0Hz
@@ skipping 19 matching lines @@
     }
 
     // Locals to member variables. Flush denormals here so we don't
     // slow down the inner loop above.
     m_lastX = DenormalDisabler::flushDenormalFloatToZero(lastX);
     m_lastY = DenormalDisabler::flushDenormalFloatToZero(lastY);
 }
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)