Add WebKit API to retrieve the audio hardware sample-rate

media/audio/audio_util.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_AUDIO_AUDIO_UTIL_H_
 #define MEDIA_AUDIO_AUDIO_UTIL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 73 matching lines @@
     memcpy(aac, b, sizeof(aac));
     b[0] = aac[1];  // L
     b[1] = aac[2];  // R
     b[2] = aac[0];  // C
     b[3] = aac[5];  // LFE
     b[4] = aac[3];  // Ls
     b[5] = aac[4];  // Rs
   }
 }
 
+// Returns the default audio hardware sample-rate.
+double GetAudioHardwareSampleRate();
+
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_UTIL_H_