Removing #ifdefs for WEB_AUDIO compile time flag.

Source/platform/audio/Distance.cpp

 /*
  * Copyright (C) 2010 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/Distance.h"
 #include "wtf/Assertions.h"
 
 #include <math.h>
 #include <algorithm>
 
 namespace blink {
 
 DistanceEffect::DistanceEffect()
     : m_model(ModelInverse)
@@ skipping 36 matching lines @@
 {
     return m_refDistance / (m_refDistance + m_rolloffFactor * (distance - m_refDistance));
 }
 
 double DistanceEffect::exponentialGain(double distance)
 {
     return pow(distance / m_refDistance, -m_rolloffFactor);
 }
 
 } // namespace blink
-
-#endif // ENABLE(WEB_AUDIO)