Endpoints: This CL changes endpoint to be a plain struct defined in v23.
Endpoints: This CL changes endpoint to be a plain struct defined in v23.

MultiPart: 2/5
Change-Id: I774ae80fb541b7e7de76e1b5aeddbbaf9f004023

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools