Revert of Make OS audio buffer size limits visible.

media/base/limits.h

Index: media/base/limits.h
diff --git a/media/base/limits.h b/media/base/limits.h
index 0853b58a2f62747ed41a2ab8e9bcb9d59412505d..f936c8bf9257a064c9aeac0229bec51a65ffcb15 100644
--- a/media/base/limits.h
+++ b/media/base/limits.h
@@ -6,8 +6,6 @@
 
 #ifndef MEDIA_BASE_LIMITS_H_
 #define MEDIA_BASE_LIMITS_H_
-
-#include "build/build_config.h"
 
 namespace media {
 
@@ -60,20 +58,6 @@
   kMaxInitDataLength = 64 * 1024,         // 64 KB
   kMaxSessionResponseLength = 64 * 1024,  // 64 KB
   kMaxKeySystemLength = 256,
-
-// Minimum and maximum buffer sizes for certain audio platforms.
-#if defined(OS_MACOSX)
-  kMinAudioBufferSize = 128,
-  kMaxAudioBufferSize = 4096,
-#elif defined(USE_PULSEAUDIO)
-  kMinAudioBufferSize = 512,
-  kMaxAudioBufferSize = 8192,
-#elif defined(USE_CRAS)
-  // Though CRAS has different per-board defaults, allow explicitly requesting
-  // this buffer size on any board.
-  kMinAudioBufferSize = 256,
-  kMaxAudioBufferSize = 8192,
-#endif
 };
 
 }  // namespace limits