Allow the network stack to read network stats history

Bug: 168984229
Test: testNetworkStatsProvider
Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1450457

Change-Id: Ic9bd2d2d06c790a84e56ec8a6915f1faab16dda0
Merged-In: Ibb6342b0f263c874bb1f7ab4031a639778bad37e
(cherry picked from commit 9010baec16faa806c2253f90225d002c4b2efb0c)
1 file changed
tree: 3ded66f75dfccb6b7282fe96dfd47f31ed50b63a
  1. core/
  2. packages/
  3. services/
  4. wifi/