Merge "Handle null fields when using parcels." into udc-dev am: 54d0cacacd am: a561c32098 am: 89de9517fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23091188

Change-Id: Ia39b68faeb5c79c48104f2b98f29003e93044627
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>