Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/platform/audio/ffmpeg/FFTFrameFFMPEG.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 @@
  * 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.
  */
 
 // FFTFrame implementation using FFmpeg's RDFT algorithm,
 // suitable for use on Windows and Linux.
 
 #include "wtf/build_config.h"
 
-#if ENABLE(WEB_AUDIO)
-
 #if USE(WEBAUDIO_FFMPEG)
 
 #include "platform/audio/FFTFrame.h"
 
 #include "platform/audio/VectorMath.h"
 
 extern "C" {
     #include <libavcodec/avfft.h>
 }
 
@@ skipping 129 matching lines @@
     ASSERT(pow2size < kMaxFFTPow2Size);
 
     RDFTContext* context = av_rdft_init(pow2size, (RDFTransformType)trans);
     return context;
 }
 
 } // namespace blink
 
 #endif // USE(WEBAUDIO_FFMPEG)
 
-#endif // ENABLE(WEB_AUDIO)