Merge "Synchronously call callback when load is cancelled" into udc-qpr-dev am: 7ac68504

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23589236



Change-Id: I93b9d83a7e592e77ce8b28d273ddecef722f6afa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>