Update status file, and fix unit tests.

tests/standalone/standalone.status

 # Copyright (c) 2013, 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.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 package/invalid_uri_test: Fail, OK # CompileTimeErrors intentionally
@@ skipping 111 matching lines @@
 left_shift_bit_and_op_test: Skip # Integers exceed dart2js precision.
 pow_test: Skip # Precision > 53 bits.
 double_smi_comparison_test: Skip # Precision > 53 bits.
 http_launch_test: Skip
 javascript_int_overflow_test: Skip
 javascript_int_overflow_literal_test: Skip
 oom_error_stacktrace_test: RuntimeError, OK # (OOM on JS may produce a stacktrace).
 vmservice/*: Skip # Do not run standalone vm service tests with dart2js.
 issue14236_test: Skip # dart2js does not deal with Script snapshots.
 
-# Suppress tests that use main(List<String> args) until issue 14200 is fixed.
-io/secure_builtin_roots_test: Fail # Issue 14200
-io/test_runner_test: Fail # Issue 14200
-io/http_cross_process_test: Fail # Issue 14200
-io/socket_cross_process_test: Fail # Issue 14200
-io/raw_socket_cross_process_test: Fail # Issue 14200
-
 [ $compiler == dart2js && $jscl ]
 assert_test: RuntimeError, OK # Assumes unspecified fields on the AssertionError.
 deoptimization_test: RuntimeError, OK # Requires bigint.
 out_of_memory_test: RuntimeError, OK # d8 handles much larger arrays than Dart VM.
 io/arguments_test: CompileTimeError, OK # Cannot pass arguments to d8.
 
 [ $compiler == dart2js && $runtime == none ]
 io/arguments_test: Fail # DartOptions not supported by dart2js, and issue 14200.
 medium_integer_test: Pass # The test only fails at runtime, not at compilation.
 oom_error_stacktrace_test: Pass # The test only fails at runtime.
@@ skipping 31 matching lines @@
 io/test_extension_fail_test: Fail
 io/dart_std_io_pipe_test: Fail
 io/file_read_special_device_test: Fail
 
 [ $compiler == none && $runtime == dartium && $unchecked ]
 assert_test: Fail # Issue 13719: Please triage this failure.
 
 [ $compiler == none && $runtime == dartium ]
 javascript_int_overflow_literal_test/01: Fail # Issue 13719: Please triage this failure.
 javascript_int_overflow_test: Fail # Issue 13719: Please triage this failure.