Resolve relative colors based on currentcolor
This CL contains the logic needed to evaluate relative color channel
values and expressions at used-value time, once the value of
currentcolor is known.
Bug: 325309578
Change-Id: Ie795ca28a43ea3c8f825a7b574a22a289c351bf9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5813537
Commit-Queue: Kevin Babbitt kbabbitt@microsoft.com
Reviewed-by: Rune Lillesveen futhark@chromium.org
Reviewed-by: Daniel Cheng dcheng@chromium.org
Cr-Commit-Position: refs/heads/main@{#1352951}