Port two more tests to dart:html

tests/html/inner_frame_test.dart

+#library('InnerFrameTest');
+#import('../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/html_config.dart');
+#import('dart:html');
+
+main() {
+  if (window != window.top) {
+    // Child frame.
+
+    // The child's frame should not be able to access its parent's
+    // document.
+
+    // Check window.frameElement.
+    try {
+      var parentDocument = window.frameElement.document;
+      var div = parentDocument.$dom_createElement("div");
+      div.id = "illegalFrameElement";
+      parentDocument.body.nodes.add(div);
+      Expect.fail('Should not reach here.');
+    } catch (NoSuchMethodException e) {
+      // Expected.
+    }
+
+    // Check window.top.
+    try {
+      final top = window.top;
+      var parentDocument = top.document;
+      var div = parentDocument.$dom_createElement("div");
+      div.id = "illegalTop";
+      parentDocument.body.nodes.add(div);
+      Expect.fail('Should not reach here.');
+    } catch (var e) {
+      // Expected.
+      // TODO(vsm): Enforce this is a NoSuchMethodException.
+    }
+    return;
+  }
+
+  // Parent / test frame
+  useHtmlConfiguration();
+
+  final iframe = new Element.tag('iframe');
+  iframe.src = window.location.href;
+
+  asyncTest('prepare', 1, () {
+      iframe.on.load.add((e) => callbackDone());
+      document.body.nodes.add(iframe);
+    });
+
+  test('frameElement', () {
+      var div = document.query('#illegalFrameElement');
+
+      // Ensure that this parent frame was not modified by its child.
+      Expect.isNull(div);
+    });
+
+  test('top', () {
+      var div = document.query('#illegalTop');
+
+      // Ensure that this parent frame was not modified by its child.
+      Expect.isNull(div);
+    });
+}