Merge "Added writer fuzzers" am: 5edfd27206 am: c06a38dd69 am: e50263177f

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1533163

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9bd8388195e9280d5f0a2700a1d38a680b0cf15d