Merge "Pass operation type via BackupManagerMonitor#onEvent" into udc-dev am: ac8d23d9 am: 99e09bb2 am: cd5cee0d

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



Change-Id: Ia25a886c2afa36392f1b26ebc696d3ff9aac587e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>