Add use-counter and WebDX feature mapping for hwb, lab and oklab.
Change-Id: I7bb021d4c4cfc0e1fd422f3f861230664248110b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5999892
Reviewed-by: Rune Lillesveen futhark@chromium.org
Commit-Queue: Steinar H Gunderson sesse@chromium.org
Reviewed-by: Shunya Shishido sisidovski@chromium.org
Cr-Commit-Position: refs/heads/main@{#1380257}