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1. Implement vulkan representation of the SharedImageVideo.

2. Skia promise image requires sampler conversion information ycbcr
in the vulkan mode. This information is needed during the promise
image creation time which happens before BeginReadAccess. This is
done by passing this info to promise image via
VideoFrame->StreamVideoDrawQuad->ResourceMetadata.

3. Add ycbcr info to the video frame. Update required mojom and struct
traits.

4. Add ycbcr info to the StreamVideoDrawQuad and update required mojom
and struct traits.

Bug: 900963
Change-Id: Ie4537604efe446492377d3615ed7c3cfde8c2130
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1582774
Commit-Queue: vikas soni <vikassoni@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Frank Liberato <liberato@chromium.org>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664802}