merge_pr_54225

Exclude anchor() and anchor-size() functions from MISU

These functions can become invalid at computed value time, even though
they are not substitution functions. MISU [1] is not able handle this,
so we just exclude those values.

[1] CL:3412160

Fixed: 436621815
Change-Id: Ifa8b57cf339911fbb8cdb9aba1a61f451a810a7d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6830645
Commit-Queue: Anders Hartvoll Ruud [email protected]
Reviewed-by: Steinar H Gunderson [email protected]
Cr-Commit-Position: refs/heads/main@{#1499331}