commit 05bee8027dda215a5c213cf5fc0bee9fa0341ed2
author markchien <markchien@google.com> Mon Mar 02 23:27:48 2020 +0800
committer Mark Chien <markchien@google.com> Mon Mar 09 01:51:20 2020 +0000
tree 8b87ad206e3b32fcb063554539a087b886f8f383
parent 067c45b1eeb5a861667e64436bfa87babedcf1ea

Send offload status changed callback

The callback would be fired when offload started, stopped, or failed.
If offload is not supported, "failed" callback would be fired when user
enable tethering. Enabling multiple tethering would not have multiple
offload status callbacks because offload should already be started or
failed.

Bug: 130596697
Test: -build, flash, boot
      -atest TetheringTests
      -ON/OFF hotspot
Change-Id: Ia0398601144b0e5f61dc0c5771eacf13e7cfbb59