dart:io | Add two more tests for SecureSocket builtin certificates.

tests/standalone/io/secure_builtin_roots_database_test.dart

Index: tests/standalone/io/secure_builtin_roots_database_test.dart
diff --git a/tests/standalone/io/secure_no_builtin_roots_database_test.dart b/tests/standalone/io/secure_builtin_roots_database_test.dart
similarity index 84%
copy from tests/standalone/io/secure_no_builtin_roots_database_test.dart
copy to tests/standalone/io/secure_builtin_roots_database_test.dart
index 8c647d06913a8228515f37a657026c644cbe4eac..39660328cb3ee89ebb4987c413985be42a45af81 100644
--- a/tests/standalone/io/secure_no_builtin_roots_database_test.dart
+++ b/tests/standalone/io/secure_builtin_roots_database_test.dart
@@ -13,11 +13,10 @@ void testGoogleUrl() {
   HttpClient client = new HttpClient();
   client.getUrl(Uri.parse('https://www.google.com'))
       .then((request) => request.close())
-      .then((response) => Expect.fail("Unexpected successful connection"))
-      .catchError((error) {
-        Expect.isTrue(error is SocketIOException);
-        keepAlive.close();
+      .then((response)=> response.last)
+      .then((_) {
         client.close();
+        keepAlive.close();
       });
 }
 
@@ -29,7 +28,7 @@ void InitializeSSL() {
   Path certificateDatabase = scriptDir.append('pkcert');
   SecureSocket.initialize(database: certificateDatabase.toNativePath(),
                           password: 'dartdart',
-                          useBuiltinRoots: false);
+                          useBuiltinRoots: true);
 }
 
 void main() {