New control block for AudioTrack and AudioRecord

Main differences between old and new control block:
 - removes the mutex, which was a potential source of priority inversion
 - circular indices into shared buffer, which is now always a power-of-2 size

Change-Id: I4e9b7fa99858b488ac98a441fa70e31dbba1b865
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index cf68848..05dbab1 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -56,6 +56,7 @@
 #include <powermanager/IPowerManager.h>
 
 #include <media/nbaio/NBLog.h>
+#include <private/media/AudioTrackShared.h>
 
 namespace android {