- Add the implementation of the Options interface to the runtime.

lib/options.dart

+// Copyright (c) 2011, 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.
+
+class RuntimeOptions implements Options {
+  List<String> get arguments() {
+    if (_arguments === null) {
+      // On first access make a copy of the native arguments.
+      _arguments = _nativeArguments.getRange(0, _nativeArguments.length);
+    }
+    return _arguments;
+  }
+
+  List<String> _arguments = null;
+
+  // This arguments singleton is overriden by the embedder if applicable.
+  static List<String> _nativeArguments = const [];
+}