Merge "Add vendorExtension implementation for all unknown parameters" am: 253b5e908c am: 5d16383852 am: c2bdea7fb0

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2470061

Change-Id: I38f4bdc85f83162c115605dc8088285fed5d0435
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>