Fix race between FrameGeneratorCapturer destructor and inserting a frame.
(aka do not use this after reposting self to a TaskQueue)
Separate periodic case from one-time case.
When Generator can't keep up with fps, drop frames instead of trying to catch up.
Use absl::make_unique and absl::WrapUnique
Bug: None
Change-Id: I9d5d1fcacf174e28d83310099b79e26ece9b7b37
Reviewed-on: https://webrtc-review.googlesource.com/98844
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24654}
abd4273e43