frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/NotificationMediaManager.java:108: error: cannot find symbol
            Settings.Secure.LOCKSCREEN_MEDIA_METADATA;
                           ^
  symbol:   variable LOCKSCREEN_MEDIA_METADATA
  location: class Secure
frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/NotificationMediaManager.java:244: error: constant string expression required
            case LOCKSCREEN_MEDIA_METADATA:
                 ^
2 errors