Merge "Added timedtext_fuzzer" am: 2fb39f8cc5 am: 866ca5990f

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2251233

Change-Id: I3e3ec3e72985121108f3a368343d3d8dcfee7a64
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>