Merge "Allow the network stack to read network stats history" am: 7e4a864f60 am: 5ac12d9b41 am: 851900ba6c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1450457

Change-Id: I99ad6018f46c4daee250dbc97249eae42a255f4f
tree: 34dfc0a07a103ceb000029f68f03484f9e0b6908
  1. core/
  2. packages/
  3. services/
  4. wifi/