Merge "Ensure public methods are running on handler thread" am: 7e343d58ce

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2584553

Change-Id: Idea4cb0a504663eadc01ef77fd7237aa7588f5a8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>