Bug 1143535 - Crashtest for this bug. r=bz

MozReview-Commit-ID: InYhrAck7xR

--HG--
extra : source : a9e6baeacb9f6d112a053da368d83cef765b6030

layout/base/crashtests/1143535.html

@@ -0,0 +1,6 @@
+<style>
+  body::before {
+    display: ruby;
+    content: "  ";
+  }
+</style>

layout/base/crashtests/crashtests.list

@@ -466,6 +466,7 @@ load 1107508-1.html
 load 1116104.html
 load 1127198-1.html
 load 1140198.html
+load 1143535.html
 pref(layout.css.grid.enabled,true) load 1156588.html
 load 1162813.xul
 load 1163583.html