commit 259d5c08a8cdce305452d33fd49234e2c9b404b5
author markchien <markchien@google.com> Thu Jan 06 21:41:56 2022 +0800
committer markchien <markchien@google.com> Mon Mar 07 10:55:51 2022 +0800
tree 09ece9eaeb8113cbf27c24a2720d215d05c12659
parent 9edd999725357a6b424a260f5d7ecbcbf604f8c8

Make isTetheringSupported respect all tethering downstreams

Currently if wifi, usb and bluetooth tethering is not supported,
isTetheringSupported would return false. Then ethernet, ncm tethering
and wifi p2p would also not be supported anymore. Make
isTetheringSupported respect all tethering downstreams after T.

Also remove redundant code:
1. tethering always has upstream configuration, checking whether has
upstream configuration for isTetheringSupported is useless.
2. Remove TetheringDependencies#isTetheringSupported because it don't
have any caller.

Test: atest TetheringTests
Change-Id: I3db5ce410c064d37c9e9e704fce2a2b68705834e