Support methods, getters, and setters on JS proxies.

tests/html/js_interop_obj_invoke_test.dart

+// 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
+
+#library('JsInteropObjInvokeTest');
+#import('../../pkg/unittest/unittest.dart');
+#import('../../pkg/unittest/html_config.dart');
+#import('dart:html');
+#import('dart:isolate');
+
+injectSource(code) {
+  final script = new ScriptElement();
+  script.type = 'text/javascript';
+  script.innerHTML = code;
+  document.body.nodes.add(script);
+}
+
+var jsProxyTest = """
+  function TestType(x) {
+    this.x = x;
+  }
+  TestType.prototype.razzle = function () {
+    return this.x * 2;
+  }
+  var data = new TestType(21);
+
+  var port = window.lookupPort('test1');
+  port.callSync(data);
+""";
+
+main() {
+  useHtmlConfiguration();
+
+  test('js-proxy', () {
+    int invoked = 0;
+
+    var port = new ReceivePortSync();
+    port.receive((data) {
+      expect(data.x, equals(21));
+      expect(data.razzle(), equals(42));
+      data.x = 100;
+      expect(data.razzle(), equals(200));
+
+      ++invoked;
+    });
+    window.registerPort('test1', port.toSendPort());
+
+    injectSource(jsProxyTest);
+    expect(invoked, equals(1));
+  });
+}