tree 508df720ce58158a13fb05961f7a325c042c9cf6
parent 7835f74bac2e1c5614a82c038c94638a88b955a9
author junyulai <junyulai@google.com> 1601971471 +0800
committer junyulai <junyulai@google.com> 1604660564 +0800

Remove unused getTetherStats

Before Android R, getTetherStats were used to collect tethering
iface stats of all clients who extends ITetheringStatsProvider,
which typically contains NetdTetheringStatsProvider and
OffloadController.

However, this always returns 0 since Android R, because:
  1. OffloadController implemented NetworkStatsProvider and no
     longer reports stats through getTetherStats.
  2. NetdTetheringStatsProvider always return 0 by design since
     non-offloaded iface tethering stats are already included
     in native iface stats.

This change is a no-op refactoring to remove unused
getTetherStats and update test which is not pratical.
Fix for offloaded tethering stats will be in follow-up CLs.

Test: atest FrameworksNetTests TetheringTests
Bug: 162292214
Change-Id: Icd0717c5c2807ae3bd98626b897e4b148f142815