Marina Ciocea 576ad5d510 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}
2020-05-15 17:46:20 +00:00
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