Merge "libbinder: fix ToString() for smart pointers" am: 616ddc4f6f am: 06863efc21

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1589291

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8aa0c037afd57e4dd24ebb0327eee1f2400338d1