Merge "MEPG4Writer:return track errors to clients" into rvc-dev am: ea5f4133c7 am: 7150296fcb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11708138

Change-Id: Ieb922f3651dcea1d0936936fe7911b98cdd52a72