Merge "Sync with libnativehelper refactoring" into rvc-dev-plus-aosp am: 1eff58da30

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11985379

Change-Id: I2c4432fd6aebf2706b2a927842d9fb21b09dd166
tree: 41e2da029ca5fdd40af7be2cbd77948cc56751c8
  1. Tethering/