Merge "Statsd log for app notification bans." into rvc-dev am: 4c3e3455 am:...

Merge "Statsd log for app notification bans." into rvc-dev am: 4c3e3455 am: 94ba1f28 am: c1754c03 am: d661f251

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11881552

Change-Id: I194b0382ebf155cfd968181b5071e99699913ec9