Bug 1533991 [wpt PR 15688] - Update wpt metadata, a=testonly

wpt-pr: 15688 wpt-type: metadata
2019-03-11 21:43:37 +00:00 · 2019-03-11 21:43:37 +00:00 · cfefdf49aa
--- a/testing/web-platform/meta/css/css-overflow/webkit-line-clamp/webkit-line-clamp-with-line-height.tentative.html.ini
+++ b/testing/web-platform/meta/css/css-overflow/webkit-line-clamp/webkit-line-clamp-with-line-height.tentative.html.ini
@ -0,0 +1,2 @@
+[webkit-line-clamp-with-line-height.tentative.html]
+  expected: FAIL