This methods were only used in test code, it should be safe to remove them. Bug: webrtc:10198 Change-Id: If2da1695f0efbff3aa9b6ebb4eebf4fdfe128593 Reviewed-on: https://webrtc-review.googlesource.com/c/118601 Reviewed-by: Qingsi Wang <qingsi@webrtc.org> Commit-Queue: Qingsi Wang <qingsi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26352}