Merge "libutils: RefBase always disallow on stack" am: 51e98b83 am:...

Merge "libutils: RefBase always disallow on stack" am: 51e98b83 am: de527065 am: cf323aa2 am: 812ffe24 am: dbd566cc

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2166102



Change-Id: If730d484842d81650003ca4a04e8a888ca805e87
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>