GitLab

Adds bit_depth to the ToSkYUVColorSpace() function so that we can
use the new bit-depth appropriate BT.2020 Skia color spaces.

R=ccameron, pkasting

Bug: 1108626
Test: New unittests.
Change-Id: I29924719655ce0d80b8d71e5adda891ed9b30050
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2321307
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: ccameron <ccameron@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#792865}