Merge "MEPG4Writer:return track errors to clients" into rvc-dev am: ea5f4133c7 am: 344a6065d7 am: 611d6b83d9 am: d35fa91ad8

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

Change-Id: Idee0c93d4e4e2d6c8e1f02308c90ecc758a9f73a