[automerger skipped] Fold the C API tests into the regular libnative{bridge,loader} tests. am: 5602ad7fc2 -s ours

am skip reason: Merged-In I3225bdb7c2dd268c2cf9353b7ce89819e6d396a5 with SHA-1 6034c0755a is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/art/+/14918425

Change-Id: I6fe314521e0a07d99c97dc46eb38f880b5b75480