Skip bad cookies in http headers.

tests/standalone/io/http_headers_test.dart

Index: tests/standalone/io/http_headers_test.dart
diff --git a/tests/standalone/io/http_headers_test.dart b/tests/standalone/io/http_headers_test.dart
index d1d261f1019e069faa6dfd4a6f94fc5c7d9d791c..7417d56382cda6c26a818271f2718d82fa4a391b 100644
--- a/tests/standalone/io/http_headers_test.dart
+++ b/tests/standalone/io/http_headers_test.dart
@@ -436,6 +436,13 @@ void testInvalidCookie() {
   Expect.throws(() => new _Cookie.fromSetCookieValue("xxx"));
   Expect.throws(() => new _Cookie.fromSetCookieValue(
       "xxx=yyy; expires=12 jan 2013"));
+
+  _HttpHeaders headers = new _HttpHeaders("1.1");
+  headers.set('Cookie',
+              'DARTSESSID=d3d6fdd78d51aaaf2924c32e991f4349; undefined');
+  Expect.equals('DARTSESSID', headers._parseCookies().single.name);
+  Expect.equals('d3d6fdd78d51aaaf2924c32e991f4349',
+                headers._parseCookies().single.value);
 }
 
 void testHeaderLists() {