Bug 1393189 part 6 - Add crashtest for this bug. r=heycam

MozReview-Commit-ID: 1DbP4Hs7tc2 --HG-- extra : rebase_source : 4d5f3c0ae4c288aa75063bff88fb16383f1aa204
2017-08-29 17:13:34 +10:00 · 2017-08-29 17:13:34 +10:00 · d0ef137841
--- a/layout/style/crashtests/1393189.html
+++ b/layout/style/crashtests/1393189.html
@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+@keyframes x {
+  0% {
+     list-style-type: c;
+  }
+}
+div {
+  animation-name: x;
+  list-style-type: t;
+}
+</style>
+<div></div>
--- a/layout/style/crashtests/crashtests.list
+++ b/layout/style/crashtests/crashtests.list
@ -204,6 +204,7 @@ load 1387481-1.html
 load 1387499.html
 load 1388234.html
 load 1391577.html
+load 1393189.html
 load 1393580.html
 load 1389645.html
 load 1393791.html