Fix static type errors in a number of tests

tests/standalone/io/raw_secure_server_socket_argument_test.dart

+// 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.
+//
+// VMOptions=
+// VMOptions=--short_socket_read
+// VMOptions=--short_socket_write
+// VMOptions=--short_socket_read --short_socket_write
+
+import "package:expect/expect.dart";
+import "dart:async";
+import "dart:io";
+import "dart:isolate";
+
+const SERVER_ADDRESS = "127.0.0.1";
+const CERTIFICATE = "localhost_cert";
+
+
+void testArguments() {
+  Expect.throws(() =>
+      RawSecureServerSocket.bind(SERVER_ADDRESS, 65536, 5, CERTIFICATE));
+  Expect.throws(() =>
+      RawSecureServerSocket.bind(SERVER_ADDRESS, -1, CERTIFICATE));
+  Expect.throws(() =>
+      RawSecureServerSocket.bind(SERVER_ADDRESS, 0, -1, CERTIFICATE));
+}
+
+
+main() {
+  Path scriptDir = new Path(new Options().script).directoryPath;
+  Path certificateDatabase = scriptDir.append('pkcert');
+  SecureSocket.initialize(database: certificateDatabase.toNativePath(),
+                          password: 'dartdart',
+                          useBuiltinRoots: false);
+  testArguments();
+}