Merge "MEPG4Writer:return track errors to clients" into rvc-dev am: ea5f4133c7 am: 344a6065d7 am: 611d6b83d9

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

Change-Id: I83ccf387118580f216bb65ef651ca88c1c5643a0