Merge "Expose internal representation of transport types." am: c745e52e04

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2567453

Change-Id: I5e1a586f4fa31f8ba6ce3d3a16c18d2930b0eaf8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>