GitLab

Spec: https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-getpropertyvalue

BUG=873760

TEST=external/wpt/css/css-logical/logical-box-border-color.html
TEST=external/wpt/css/css-logical/logical-box-border-shorthands.html
TEST=external/wpt/css/css-logical/logical-box-border-style.html
TEST=external/wpt/css/css-logical/logical-box-border-width.html
TEST=external/wpt/css/css-logical/logical-box-inset.html
TEST=external/wpt/css/css-logical/logical-box-margin.html
TEST=external/wpt/css/css-logical/logical-box-padding.html

Change-Id: I60fca339c419d1d19eb6b31f0426c11f9d1cf95f
Reviewed-on: https://chromium-review.googlesource.com/1176084Reviewed-by: Javier Fernandez <jfernandez@igalia.com>
Reviewed-by: Anders Ruud <andruud@chromium.org>
Commit-Queue: Oriol Brufau <obrufau@igalia.com>
Cr-Commit-Position: refs/heads/master@{#584027}