Merge "Adding Network Tethering Metrics/atoms" into rvc-dev am: 53795ae7ae

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11877918

Change-Id: If7cf9571ae7554ed3e757446fdbc8341bd8b2007
tree: 1e829503d73543820f018e78a1bda70f8ee291df
  1. stats/