Fixed noi18n build.

Review URL: https://codereview.chromium.org/1159553011

Cr-Commit-Position: refs/heads/master@{#28792}

test/mjsunit/regress/regress-crbug-493284.js

@@ -4,5 +4,7 @@
 
 // Flags: --invoke-weak-callbacks --omit-quit --no-test
 
-var coll = new Intl.Collator();
-assertEquals(-1, coll.compare('a', 'c'));
+if (this.Intl) {
+  var coll = new Intl.Collator();
+  assertEquals(-1, coll.compare('a', 'c'));
+}