Merge 123292 - Increase the buffer size in AudioRendererImpl to fix muted playback rate

media/audio/audio_util.h

Index: media/audio/audio_util.h
===================================================================
--- media/audio/audio_util.h	(revision 123772)
+++ media/audio/audio_util.h	(working copy)
@@ -10,6 +10,8 @@
 #include "base/basictypes.h"
 #include "media/base/media_export.h"
 
+struct AudioParameters;
+
 namespace base {
 class SharedMemory;
 }
@@ -122,6 +124,9 @@
                             int bytes_per_channel, const uint8* src,
                             uint8* dest);
 
+// Calculates a safe hardware buffer size (in number of samples) given a set
+// of audio parameters.
+MEDIA_EXPORT uint32 SelectSamplesPerPacket(int sample_rate);
 
 }  // namespace media