Merge "Add outputLength method" into udc-dev am: d379634a83

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22369744

Change-Id: I4e6e82119968b913613230f9ab9c08d5c2d5fed4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>