Merge "MEPG4Writer:return track errors to clients" into rvc-dev am: ea5f4133c7 am: 7150296fcb am: a059bb3154

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

Change-Id: I3688def246edcb14c6f07353923f22e128877a42