diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 7e36d5f..ffb7ac8 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -62,6 +62,13 @@
 // playback track
 class Track : public TrackBase, public VolumeProvider {
 public:
+    // createIAudioTrackAdapter() is a static constructor which creates an
+    // IAudioTrack AIDL interface adapter from the Track object that
+    // may be passed back to the client (if needed).
+    //
+    // Only one AIDL IAudioTrack interface wrapper should be created per Track.
+    static sp<media::IAudioTrack> createIAudioTrackAdapter(const sp<Track>& track);
+
                         Track(  PlaybackThread *thread,
                                 const sp<Client>& client,
                                 audio_stream_type_t streamType,