Merge "Pass operation type via BackupManagerMonitor#onEvent" into udc-dev am: ac8d23d9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22892341



Change-Id: Ib7a1630e6631b612d2c391132499699e7de586ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>