This allows to get encoder implementation name and other properties without the need of initializing encoder. Bug: none Change-Id: I263a358d562a65a31c420ddb7c4b195316fa5ec8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226867 Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Mirta Dvornicic <mirtad@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34559}