Add grid/flex layout support for <fieldset>
This adds grid/flex layout support for <fieldset> by
introducing an anonymous inner block that is used to
layout fieldset's underlying blocks without interfering
with the special paint flow used to render <legend>
element.
W3C/CSS WG discussion:
https://github.com/w3c/csswg-drafts/issues/321
Testing:
- All affected tests' results were verified to make sure
that there are no differences in pixel test results between
old and new version of LayoutFieldSet.
- 2 more tests were added
(fieldset-display-{flex|grid}.html)
- verified interoperability of fieldset(display: flex)
with Firefox(one of 2 browsers that support fieldset's flex
layout)
BUG=262679,375693
TEST=fast/forms/fieldset/fieldset-display-flex.html;
fast/forms/fieldset/fieldset-display-grid.html
Review-Url: https://codereview.chromium.org/2150003005
Cr-Commit-Position: refs/heads/master@{#409303}
14 files changed
