Pass a span referring to static method name to protocol Callbacks

This undoes a drive-by change in c0045057ce801744c5e88596a2f1bab1802e39f0 that
accidendally made a span with method name stored in protocol commands to refer
to heap data instead of a static memory.

Bug: 518930988
Change-Id: I9a61be84f672114faaefa1d5ba0f47ba4256fe3c
3 files changed