Merge "Added timedtext_fuzzer" am: 2fb39f8cc5

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

Change-Id: Ic8079d5f38f362979670508054a1edb230bda564
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>