Merge "NetworkStats: Avoid Division By 0" am: e22278838e am: 46b4720a18

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1810678

Change-Id: I579026d3e4b1f4ee03f156089d16047f0fc2f77c
tree: 3893e1f7a0d54059819aab4b9cd6a06b5b79b21c
  1. core/
  2. services/