Remove the WEB_AUDIO compile time flag

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

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
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 #include "platform/audio/Biquad.h"
-
-#if ENABLE(WEB_AUDIO)
 #include <stdio.h>
 #include <algorithm>
 #include "platform/audio/DenormalDisabler.h"
 #include "wtf/MathExtras.h"
 
 #include <complex>
 #if OS(MACOSX)
 #include <Accelerate/Accelerate.h>
 #endif
 
@@ skipping 515 matching lines @@
         std::complex<double> denominator =
             std::complex<double>(1, 0) + (a1 + a2 * z) * z;
         std::complex<double> response = numerator / denominator;
         magResponse[k] = static_cast<float>(abs(response));
         phaseResponse[k] = static_cast<float>(atan2(imag(response), real(response)));
     }
 }
 
 } // namespace blink
 
-#endif // ENABLE(WEB_AUDIO)