dart:io | Remove uses of Options class from standalone tests. Mark Options deprecated.

tests/standalone/io/https_unauthorized_test.dart

Index: tests/standalone/io/https_unauthorized_test.dart
diff --git a/tests/standalone/io/https_unauthorized_test.dart b/tests/standalone/io/https_unauthorized_test.dart
index f8fe73181245547aba197e70e0ec6d536622e054..dc3a24623e10e61f6154b58aabbba471a3fb8a36 100644
--- a/tests/standalone/io/https_unauthorized_test.dart
+++ b/tests/standalone/io/https_unauthorized_test.dart
@@ -15,7 +15,7 @@ const CERTIFICATE = "localhost_cert";
 
 Future<SecureServerSocket> runServer() {
   SecureSocket.initialize(
-      database: join(dirname(new Options().script), 'pkcert'),
+      database: join(dirname(Platform.script), 'pkcert'),
       password: 'dartdart');
 
   return HttpServer.bindSecure(
@@ -29,12 +29,11 @@ Future<SecureServerSocket> runServer() {
 }
 
 void main() {
-  final options = new Options();
-  var clientScript = join(dirname(options.script),
+  var clientScript = join(dirname(Platform.script),
                           'https_unauthorized_client.dart');
 
   Future clientProcess(int port) {
-    return Process.run(options.executable,
+    return Process.run(Platform.executable,
         [clientScript, port.toString()])
     .then((ProcessResult result) {
       if (result.exitCode != 0 || !result.stdout.contains('SUCCESS')) {