[css-logical] Allow flow-relative border colors in :visited rules

They should be allowed like the physical border colors.

Spec: https://drafts.csswg.org/css-logical/#border-color
Spec: https://drafts.csswg.org/selectors/#visited-pseudo

BUG=860313

TEST=fast/css/css/logical-box-border-color-visited-001.html
TEST=fast/css/css/logical-box-border-color-visited-002.html
TEST=fast/css/css/logical-box-border-color-visited-003.html

Change-Id: I20967bf4b00716e5c4ec2bac2e3781c81cdaa688
Reviewed-on: https://chromium-review.googlesource.com/1178043
Commit-Queue: Oriol Brufau <obrufau@igalia.com>
Reviewed-by: Javier Fernandez <jfernandez@igalia.com>
Cr-Commit-Position: refs/heads/master@{#584036}
7 files changed