Removing #ifdefs for WEB_AUDIO compile time flag.

Source/platform/audio/ZeroPole.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 10 matching lines @@
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
-#if ENABLE(WEB_AUDIO)
-
 #include "platform/audio/ZeroPole.h"
 
 #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;
@@ skipping 20 matching lines @@
         *destination++ = output2;
     }
 
     // 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)