Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/platform/audio/mac/FFTFrameMac.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 12 matching lines @@
  * 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.
  */
 
 // Mac OS X - specific FFTFrame implementation
 
 #include "wtf/build_config.h"
 
-#if ENABLE(WEB_AUDIO)
-
 #if OS(MACOSX)
 
 #include "platform/audio/FFTFrame.h"
 
 #include "platform/audio/VectorMath.h"
 
 namespace blink {
 
 const int kMaxFFTPow2Size = 24;
 
@@ skipping 105 matching lines @@
     }
 
     free(fftSetups);
     fftSetups = nullptr;
 }
 
 } // namespace blink
 
 #endif // #if OS(MACOSX)
 
-#endif // ENABLE(WEB_AUDIO)