Clean up audio-related utility functions to compute buffer sizes

media/audio/audio_util.cc

Index: media/audio/audio_util.cc
diff --git a/media/audio/audio_util.cc b/media/audio/audio_util.cc
index 8caced5204243dd7e1ee1337f6a6e5e7ce9dd386..c607a3add2f565caaa2ef08c052fa82c435d5d98 100644
--- a/media/audio/audio_util.cc
+++ b/media/audio/audio_util.cc
@@ -438,29 +438,4 @@ void Crossfade(int bytes_to_crossfade, int number_of_channels,
   }
 }
 
-// The minimum number of samples in a hardware packet.
-// This value is selected so that we can handle down to 5khz sample rate.
-static const int kMinSamplesPerHardwarePacket = 1024;
-
-// The maximum number of samples in a hardware packet.
-// This value is selected so that we can handle up to 192khz sample rate.
-static const int kMaxSamplesPerHardwarePacket = 64 * 1024;
-
-// This constant governs the hardware audio buffer size, this value should be
-// chosen carefully.
-// This value is selected so that we have 8192 samples for 48khz streams.
-static const int kMillisecondsPerHardwarePacket = 170;
-
-uint32 SelectSamplesPerPacket(int sample_rate) {
-  // Select the number of samples that can provide at least
-  // |kMillisecondsPerHardwarePacket| worth of audio data.
-  int samples = kMinSamplesPerHardwarePacket;
-  while (samples <= kMaxSamplesPerHardwarePacket &&
-         samples * base::Time::kMillisecondsPerSecond <
-         sample_rate * kMillisecondsPerHardwarePacket) {
-    samples *= 2;
-  }
-  return samples;
-}
-
 }  // namespace media