Copy lib/dom tests that use dart:html to lib/html.

tests/dom/cross_frame_test.dart

Index: tests/dom/cross_frame_test.dart
diff --git a/tests/dom/cross_frame_test.dart b/tests/dom/cross_frame_test.dart
deleted file mode 100644
index 8269e284887f6ce5d9ce303f9c8f62ee64f6ba7c..0000000000000000000000000000000000000000
--- a/tests/dom/cross_frame_test.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-#library('CrossFrameTest');
-#import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/html_config.dart');
-#import('dart:html');
-
-main() {
-  useHtmlConfiguration();
-
-  test('contentWindow', () {
-      final iframe = new Element.tag('iframe');
-      document.body.nodes.add(iframe);
-      final frameWindow = iframe.contentWindow;
-
-      // Ensure that the frame's document is inaccessible via window.
-      Expect.throws(() => frameWindow.document);
-    });
-
-  test('contentDocument', () {
-      final iframe = new Element.tag('iframe');
-      document.body.nodes.add(iframe);
-
-      // Ensure that the frame's document is inaccessible.
-      Expect.throws(() => iframe.contentDocument);
-    });
-}