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

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

Change-Id: I332bea7ffe4a84b7830037f6b7c8041fb2366510
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>