tree 55c473c0bddb034e46dcbdef32e2d2a505537664
parent 3c94994650bc642c9200f4aeb176b88109b7fd80
author junyulai <junyulai@google.com> 1620286937 +0800
committer junyulai <junyulai@google.com> 1620886060 +0800

No-op Refactoring of startTrackDefaultNetwork

While the actual part that track default request is inside
UpstreamNetworkMonitor, instead of passing it from Tethering,
move it into counter-part CL and use it from
UpstreamNetworkMonitor.

Since the current code is replaced by registerSystemDefaultCallback
in Android S, implement it inside the api30 shim implementation
to provide an unified interface to tethering.

Test: atest TetheringCoverageTests
Bug: 185952829
Change-Id: Iaf21b6b662aa6aba79c2b75379128b8523f81f02