The transport time metric was accidentially changed by the CL https://webrtc-review.googlesource.com/c/src/+/153660 This CL restore the transport time metric to how it has been measured before, that is, time from encoder output to decoder input. Bug: webrtc:10975 Change-Id: I66f022f26976451d28c0374b22849f14f9c02378 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/153886 Reviewed-by: Artem Titov <titovartem@webrtc.org> Commit-Queue: Johannes Kron <kron@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29259}