Merge "Create hint session asynchronously" into udc-dev am: 5c406a3c am: e570abbe am: d1a94caf am: 6c2a13d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22951911



Change-Id: Ia5ec78b37973f351ef310d574ffbf394fdacb32a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>