Reviewed-by: ihse, mchung

Reviewed-by: ihse

Reviewed-by: ihse

Reviewed-by: alanb, mchung, sundar

Summary: Initial implementation for JEP 264 Platform Logger API and Service
Reviewed-by: mchung, psandoz, rriggs

Reviewed-by: mullan

Reviewed-by: erikj

Reviewed-by: alanb