[SP28.2] Add shims to allow test utils built against different SDKs am: ccd68dc9c9 am: ec3c6f19f4 am: 7b7013bd70

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1654918

Change-Id: I1eee73c46d02bb18a6c60b3c31492fc64719935b
tree: 5edf2cc2d486222452143b7491fdbe9617231f19
  1. staticlibs/