Adds a constructor for DirectTransport that takes a pointer to an instance
of a class derived from FakeNetworkPipe. Said class can override Process()
and SendPacket(...) members thereby emulating any desired network behavior.
Bug: b/67487983
Change-Id: I829fd3506124db61587af19192a14fdf62b06ca5
Reviewed-on: https://webrtc-review.googlesource.com/14620
Commit-Queue: Christoffer Rodbro <crodbro@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20443}
d2817d80b5