This reverts commit 576ad5d510894040d7bbc041d5c86745c67f30f8.
Reason for revert: Causes compile error in Chrome.
Original change's description:
> Make TransformableVideoFrameInterface::GetMetadata pure virtual.
>
> GetMetadata() has been implemented downstream and can be made pure
> virtual.
>
> Bug: chromium:1069295
> Change-Id: I62a3be6106552d2d82d8c413c6f523d31626b0d8
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175001
> Commit-Queue: Marina Ciocea <marinaciocea@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31281}
TBR=hta@webrtc.org,marinaciocea@webrtc.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: chromium:1069295
Change-Id: I5915270d5b8dab9fc30a07f22fddedb29beca01a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175620
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Commit-Queue: Guido Urdaneta <guidou@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31304}
3e9068a6b4