CSS: Test dominant-baseline initial value 'auto'

The CSS Inline Layout spec has been updated to
show the initial value of dominant-baseline as
'auto', matching SVG 1.1 and browsers.

https://drafts.csswg.org/css-inline/#dominant-baseline-property
w3c/csswg-drafts#4115

Change-Id: Ib2dbdf91a9535c4d149aa773b61302c36c360305
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1741445
Auto-Submit: Eric Willigers <[email protected]>
Commit-Queue: Emil A Eklund <[email protected]>
Reviewed-by: Emil A Eklund <[email protected]>
Cr-Commit-Position: refs/heads/master@{#685218}

Author: ericwilligers

css/css-inline/inheritance.html

@@ -18,7 +18,7 @@
 <script>
 assert_not_inherited('alignment-baseline', 'baseline', 'central');
 assert_not_inherited('baseline-shift', '0px', '10px');
-assert_inherited('dominant-baseline', 'normal', 'central');
+assert_inherited('dominant-baseline', 'auto', 'central');
 assert_not_inherited('initial-letters', 'normal', '2 3');
 assert_inherited('initial-letters-align', 'alphabetic', 'hanging');
 assert_inherited('initial-letters-wrap', 'none', 'grid');