Changes to gtest bp to supported isolated change am: d70c7ca434

Original change: https://android-review.googlesource.com/c/platform/system/testing/gtest_extras/+/2069568

Change-Id: I7b604753abf973b5535f76c0f560dcd92194d6a5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>