It is called right after construction, so move the needed
implementation into the MediaOptimization constructor instead.
Bug: webrtc:9711
Change-Id: Ibca35670bf45a85538c34c8ead58ba855acc6b96
Reviewed-on: https://webrtc-review.googlesource.com/97325
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24540}