Merge "Revert "Revert "libbinder_ndk: toString never goes to empty stri...""...

Merge "Revert "Revert "libbinder_ndk: toString never goes to empty stri..."" am: b4507cef am: b498dde0

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2320378



Change-Id: I24527480fa251995f66ec69a4ea9d6713b468bbc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>