Bug 1364273 - (followup) update stylo-failures.md to reduce failure count of mask.
MozReview-Commit-ID: Hj4qBXVnZM0
--- a/layout/style/test/stylo-failures.md
+++ b/layout/style/test/stylo-failures.md
@@ -200,17 +200,16 @@ to mochitest command.
* test_units_time.html [1]
* getComputedStyle style doesn't contain custom properties bug 1336891
* test_variable_serialization_computed.html [35]
* test_variables.html `custom property name` [2]
* test_css_supports.html: issues around @supports syntax servo/servo#15482 [8]
* test_author_specified_style.html: support serializing color as author specified bug 1348165 [27]
* browser_newtab_share_rule_processors.js: agent style sheet sharing [1]
* test_selectors.html `this_better_be_unvisited`: visited handling [1]
-* test_computed_style.html `mask`: initial value of mask-repeat bug 1364273 [10]
## Assertions
## Need Gecko change
* Servo is correct but Gecko is wrong
* flex-basis should be 0px when omitted in flex shorthand bug 1331530
* test_flexbox_flex_shorthand.html `flex-basis` [10]