Add WebDX mapping and WPT test mapping for forced-colors
Change-Id: I5d1d3136bc96f870fd3730ce5291e7eb8402b60d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5993499
Commit-Queue: Steinar H Gunderson sesse@chromium.org
Reviewed-by: Shunya Shishido sisidovski@chromium.org
Reviewed-by: Rune Lillesveen futhark@chromium.org
Cr-Commit-Position: refs/heads/main@{#1378917}