Merge "Update datagram transfer state." into udc-dev am: 6c347562 am: 5a359596

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21991781



Change-Id: I5d872aeefb1b9ab3cbdb3f94e7cf5b7a0b41e41e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>