[GWP-ASan] Stop using type aliases for ::testing:: types am: 8d810da786 am: 96602a3a08 am: 1600e33335 am: 14fd60cbf5

Original change: https://android-review.googlesource.com/c/platform/external/gwp_asan/+/2464591

Change-Id: Ia2037f90da6d0058386733ff43b3df36baa89568
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>