Merge "libbinder_ndk: toString never goes to empty strings." am: 8e2b0f74...

Merge "libbinder_ndk: toString never goes to empty strings." am: 8e2b0f74 am: bd7dc6e9 am: f26bc0f8

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2315865



Change-Id: I631e7760eb3ce910dbac571d74638297800d507c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>