Merge "Statsd notif logs: important conversations." into rvc-dev am: b79e69c33c am: fc0f7c6449 am: c4396084a6 am: 364e2071a1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11931359

Change-Id: Ia77d23b8402a9ef6ac9bdc278c73c1395501848f
tree: 48d25657944fac521ee3c889c31c11f23c930efd
  1. stats/