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This is a reland of 0c93bcb5

This change depends on an earlier change that has been relanded.
https://chromium-review.googlesource.com/c/chromium/src/+/2634055
This one can now reland too.

Original change's description:
> Introduce mailbox-based version of VideoTextureBacking
>
> This CL introduces an OOPR compatible version of VideoTextureBacking and
> updates PaintCanvasVideoRenderer::UpdateLastImage() to use this new
> version in the OOPR codepath.
>
> More details about overall PaintImage effort: crbug.com/1023259
> Info about the OOPR-Canvas2D project: crbug.com/1018894
>
> Bug: 1115217
> Change-Id: I4590cf16d6faef0e5575b0b4006ea88de89aa13d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2419653
> Reviewed-by: Khushal <khushalsagar@chromium.org>
> Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
> Commit-Queue: Jonah Chin <jochin@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#826449}

Bug: 1115217
Change-Id: I7350332bad441440b69c7b472cbf08074a33304e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2640815Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: Jonah Chin <jochin@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#845358}