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

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



Change-Id: I122d6d0eef39eadd8c242179d6341de8e62cd291
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>