Merge "libbinder: writeInterfaceToken char16_t* variant" am: d0f1f1e365 am: 944c37817d

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1444735

Change-Id: I5e33c49e6f8b3d8e9d382675e37e9ee83061d6e3