Merge "Use operator<< with String16 rather than char16_t*" into main am: 8d3b50ebb5 am: f72a1983df am: 02478574df

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2898895

Change-Id: I68e676fc49375588125fc7b9e012f9fda89f789c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>