Merge "Add unit test for NetworkStatsSubscriptionsMonitor" am: 4a4540dee6

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1298476

Change-Id: I1b191cd4706a7409794d382bda95ef6933b019a1
tree: 9dcbfecab1f3bf5c6ad999904c015783a874c347
  1. core/
  2. services/
  3. tests/