[automerger skipped] Rename BackupManagerMonitorUtil to...

[automerger skipped] Rename BackupManagerMonitorUtil to BackupManagerMonitorEventSender and convert it into an instance class in preparation of am: 2722d365 am: 567c0c08 -s ours

am skip reason: Merged-In Idba7eb5342038a86b34e73f63892a7a7d93bf894 with SHA-1 073d1f1e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24512990



Change-Id: I40aacc770bec01969da285baf2e70bca3b0ffe11
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>