Migrate Test Targets to New Android Ownership Model am: 6ec5d39099

Original change: https://android-review.googlesource.com/c/platform/system/unwinding/+/2946531

Change-Id: Iade02778c699510e64fad2b61f9991af46edc782
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: de4b48670d0fac89f1708879644fb1c8ac169d7e
  1. libunwindstack/
  2. OWNERS
  3. PREUPLOAD.cfg