Extend the tests for more Intl objects.

Bug: v8:5751
Change-Id: Icfd4b86499395b49f67a97e46d1b1b87ed9c01eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1605356Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61423}

test/intl/general/supported-locales-of.js

@@ -27,11 +27,17 @@
 
 // Tests supportedLocalesOf method.
 
+// Flags: --harmony-intl-segmenter
+
 var services = [
-  Intl.DateTimeFormat,
   Intl.Collator,
+  Intl.DateTimeFormat,
   Intl.NumberFormat,
-  Intl.PluralRules
+  Intl.ListFormat,
+  Intl.PluralRules,
+  Intl.RelativeTimeFormat,
+  Intl.Segmenter,
+  Intl.v8BreakIterator,
 ];
 
 for (const service of services) {