Add Backup and Restore atoms and enums for WearServices

This patch adds logging atoms to atoms.proto for Wear OS Backup and
Restore start/success/failure events.

Corresponding google3 change: cl/501861958

Eldar: go/wear-services-b&r-eldar

Bug: 259927748
Bug: 261565373
Test: Using statsd_testdrive
Change-Id: I2d1d86d0a2bda6fd3ea1d6e6f6a031e74900c281
4 files changed
tree: 6e2fe0f1b0dd646becf53e9bee6ab36b289c71cd
  1. stats/
  2. OWNERS