diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 7008cee..a093893 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -31,6 +31,7 @@
 private:
     OpPlayAudioMonitor(uid_t uid, audio_usage_t usage, int id);
     void onFirstRef() override;
+    static void getPackagesForUid(uid_t uid, Vector<String16>& packages);
 
     AppOpsManager mAppOpsManager;