Use FFT from FFMpeg for OSX

third_party/WebKit/Source/platform/audio/FFTFrame.h

Index: third_party/WebKit/Source/platform/audio/FFTFrame.h
diff --git a/third_party/WebKit/Source/platform/audio/FFTFrame.h b/third_party/WebKit/Source/platform/audio/FFTFrame.h
index eea96f36f4d65d04baba2a93d8776dd683024bdd..619fe95bcb66b141a8ba83eeab99f4f1e7959131 100644
--- a/third_party/WebKit/Source/platform/audio/FFTFrame.h
+++ b/third_party/WebKit/Source/platform/audio/FFTFrame.h
@@ -36,9 +36,7 @@
 #include "wtf/Threading.h"
 #include <memory>
 
-#if OS(MACOSX)
-#include <Accelerate/Accelerate.h>
-#elif USE(WEBAUDIO_OPENMAX_DL_FFT)
+#if USE(WEBAUDIO_OPENMAX_DL_FFT)
 #include <dl/sp/api/omxSP.h>
 #elif USE(WEBAUDIO_FFMPEG)
 struct RDFTContext;
@@ -99,14 +97,7 @@ class PLATFORM_EXPORT FFTFrame {
   AudioFloatArray m_realData;
   AudioFloatArray m_imagData;
 
-#if OS(MACOSX)
-  DSPSplitComplex& dspSplitComplex() { return m_frame; }
-  DSPSplitComplex dspSplitComplex() const { return m_frame; }
-  static FFTSetup fftSetupForSize(unsigned fftSize);
-  static FFTSetup* fftSetups;
-  FFTSetup m_FFTSetup;
-  DSPSplitComplex m_frame;
-#elif USE(WEBAUDIO_FFMPEG)
+#if USE(WEBAUDIO_FFMPEG)
   static RDFTContext* contextForSize(unsigned fftSize, int trans);
   RDFTContext* m_forwardContext;
   RDFTContext* m_inverseContext;