Use iterator, moveNext(), current.

tests/standalone/standalone.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 out_of_memory_test: Skip # Issue 2345
 
 package/invalid_uri_test: Fail, OK # Fails intentionally
 
 [ $runtime == vm ]
-io/test_runner_exit_code_test: Fail, OK # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
+io/test_runner_exit_code_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
+status_expression_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
+io/status_file_parser_test: Fail # used by both a test and the VM. Can be reenabled when we replace the precompiled dart executable in tools.
 
 io/directory_non_ascii_test: Fail  # Posting non-ascii strings through ports.
 io/file_non_ascii_test: Fail  # Posting non-ascii strings through ports.
 
 [ $runtime == vm && $checked ]
 # These tests have type errors on purpose.
 io/process_invalid_arguments_test: Fail, OK
 io/directory_invalid_arguments_test: Fail, OK
 io/file_invalid_arguments_test: Fail, OK
 io/socket_invalid_arguments_test: Fail, OK
@@ skipping 58 matching lines @@
 [ $compiler == dart2js && $browser ]
 *: Skip
 
 [ $compiler == dart2js && $checked ]
 io/http_read_test: Skip # Timeout TODO(ngeoffray): investigate
 io/list_input_stream_test: Skip # Timeout TODO(ngeoffray): investigate
 
 [ $compiler == dart2dart ]
 # Skip until we stabilize language tests.
 *: Skip