Merge "ANDROID: Add simple fuzzing targets for video and video+audio encoding." am: 5fdfb920c6

Original change: https://android-review.googlesource.com/c/platform/external/libwebm/+/1506861

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9cbef0ed8bfd9332c3ab2bbba7675a6cd53500bf