GitLab

This initial implementation is missing some key functionality (flush and
reset), but does implement backpressure correctly. It should run with
any media::VideoDecoder that does not depend on the media thread (eg.
FFmpegVideoDecoder).

The intention is that a new media::VideoDecoder (WebCodecVideoDecoder)
will be added in //media/blink, and it will be responsible for thread
hopping, decoder selection, and decoder fallback. That code is not yet
compiling.

Bug: 897297
Change-Id: Iaaba7868f8d31ab1011981dcbbdb06db0e6953d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1979510
Commit-Queue: Dan Sanders <sandersd@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Chrome Cunningham <chcunningham@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738829}