This API is and has always been unused. Bug: webrtc:5298 Change-Id: If1201d37a00e387567d44a9ed8be99a157915b47 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174661 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31180}