Move utility functions for sample rate to AudioUtilities.

Source/platform/audio/HRTFPanner.cpp

Index: Source/platform/audio/HRTFPanner.cpp
diff --git a/Source/platform/audio/HRTFPanner.cpp b/Source/platform/audio/HRTFPanner.cpp
index 851410a61a04a0459d6627280bdf565679a45b5d..d730289347e9dd7d206df57c92a56e14a5fe4edd 100644
--- a/Source/platform/audio/HRTFPanner.cpp
+++ b/Source/platform/audio/HRTFPanner.cpp
@@ -30,6 +30,7 @@
 
 #include <algorithm>
 #include "platform/audio/AudioBus.h"
+#include "platform/audio/AudioUtilities.h"
 #include "platform/audio/HRTFDatabase.h"
 #include "wtf/MathExtras.h"
 #include "wtf/RefPtr.h"
@@ -82,7 +83,7 @@ size_t HRTFPanner::fftSizeForSampleRate(float sampleRate)
     // The resampled length is used to compute the FFT size by choosing a power of two that is
     // greater than or equal the resampled length. This power of two is doubled to get the actual FFT size.
 
-    ASSERT(sampleRate >= 3000 && sampleRate <= 192000);
+    ASSERT(AudioUtilities::isValidAudioBufferSampleRate(sampleRate));
 
     int truncatedImpulseLength = 256;
     double sampleRateRatio = sampleRate / 44100;