Merge "Move utils from network stack to libs." am: 21be4fabb5 am: 64573a945a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1350083

Change-Id: Ia163bc416e16ce56fc96855c1111a9905b712843
tree: 2c2ff36d7b509f0db2941d690de0c99200b356a5
  1. core/
  2. services/
  3. tests/