Use libgtest_prod_headers. am: 3e993c29da am: 56e40628f8 am: c42764fd4a am: dc65975ad9 am: 78c2ee1919

Original change: https://android-review.googlesource.com/c/platform/external/libchrome/+/1684309

Change-Id: I4e8a24f43550f82cd99da405540945481c0a7c21