Clean up anchor attribute display test and test for auto value
The previous test did not exercise the auto keyword within the
anchor() function. The new test ensures auto can be used as a
value for position-anchor but not as a first argument to the
anchor() function.
The spec is here:
https://drafts.csswg.org/css-anchor-position-1/#anchor-pos
Bug: 342579983
Change-Id: I4a2c953496bdbb650db54dcc3e0b8595046f3de6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5569991
Auto-Submit: Mason Freed masonf@chromium.org
Reviewed-by: Joey Arhar jarhar@chromium.org
Commit-Queue: Joey Arhar jarhar@chromium.org
Cr-Commit-Position: refs/heads/main@{#1306864}