We use template magic to let them handle both the presence and absence
of the new argument. This will be removed in a later CL, when we can
assume that new argument is always present.
Bug: webrtc:8941
Change-Id: I2d47f7c8572a9f03e742401dcf491b948b161f63
Reviewed-on: https://webrtc-review.googlesource.com/58081
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Oskar Sundbom <ossu@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22301}
6b54228e8b