When video frame encoding is done on an external thread (for example in
the case of hardware encoders), the WebRTC TaskQueueBase::Current() is
null; in this case use the worker queue instead to send transformed
frames.
Bug: chromium:1086373
Change-Id: I903ddc52ad6832557fc5b5f76396fe26cf5a88f3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176303
Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Marina Ciocea <marinaciocea@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31388}