Fix up test statuses. Browser tests should now all pass.

pkg/intl/lib/intl_browser.dart

Index: pkg/intl/lib/intl_browser.dart
diff --git a/pkg/intl/lib/intl_browser.dart b/pkg/intl/lib/intl_browser.dart
index f0af08dd2e3e38767e93c31d26c78e56c0ed969a..76e8d5064633c0ff47131f4cd9ebcaa827513acb 100644
--- a/pkg/intl/lib/intl_browser.dart
+++ b/pkg/intl/lib/intl_browser.dart
@@ -11,6 +11,7 @@
 
 library intl_browser;
 
+import "dart:async";
 import "dart:html";
 import "intl.dart";
 
@@ -27,4 +28,4 @@ import "intl.dart";
 Future<String> findSystemLocale() {
   Intl.systemLocale = Intl.canonicalizedLocale(window.navigator.language);
   return new Future.immediate(Intl.systemLocale);
-}
+}