Allow source depot source server in the public version of TraceEvent.
Allow source depot source server in the public version of TraceEvent.

We really probably need a hook that allows the user of symbol reader the ability to get a callback
to execute the source control command.  (But it may not be worth it as it really should all go to
the URL style instead.

vancem/perfview,vancem/perfview,vancem/perfview,vancem/perfview,vancem/perfview