Minimal fix to get cross frame tests working.

lib/html/dartium/html_dartium.dart

Index: lib/html/dartium/html_dartium.dart
diff --git a/lib/html/dartium/html_dartium.dart b/lib/html/dartium/html_dartium.dart
index 70707e9552d95f0faeb8d94730fd504a47f07478..2625d1fb8ad568e64ecb63dfdea51db039b74460 100644
--- a/lib/html/dartium/html_dartium.dart
+++ b/lib/html/dartium/html_dartium.dart
@@ -10691,10 +10691,6 @@ class _IFrameElementImpl extends _ElementImpl implements IFrameElement {
 
   void set align(String value) { _ptr.align = _unwrap(value); }
 
-  Document get contentDocument() => _wrap(_ptr.contentDocument);
-
-  Window get contentWindow() => _wrap(_ptr.contentWindow);
-
   String get frameBorder() => _wrap(_ptr.frameBorder);
 
   void set frameBorder(String value) { _ptr.frameBorder = _unwrap(value); }
@@ -21386,8 +21382,6 @@ class _WindowImpl extends _EventTargetImpl implements Window {
 
   Event get event() => _wrap(_ptr.event);
 
-  Element get frameElement() => _wrap(_ptr.frameElement);
-
   Window get frames() => _wrap(_ptr.frames);
 
   History get history() => _wrap(_ptr.history);
@@ -21462,8 +21456,6 @@ class _WindowImpl extends _EventTargetImpl implements Window {
 
   BarInfo get toolbar() => _wrap(_ptr.toolbar);
 
-  Window get top() => _wrap(_ptr.top);
-
   IDBFactory get webkitIndexedDB() => _wrap(_ptr.webkitIndexedDB);
 
   NotificationCenter get webkitNotifications() => _wrap(_ptr.webkitNotifications);
@@ -30040,12 +30032,6 @@ interface IFrameElement extends Element {
   /** @domName HTMLIFrameElement.align */
   String align;
 
-  /** @domName HTMLIFrameElement.contentDocument */
-  final Document contentDocument;
-
-  /** @domName HTMLIFrameElement.contentWindow */
-  final Window contentWindow;
-
   /** @domName HTMLIFrameElement.frameBorder */
   String frameBorder;
 
@@ -39888,9 +39874,6 @@ interface Window extends EventTarget {
   /** @domName DOMWindow.event */
   final Event event;
 
-  /** @domName DOMWindow.frameElement */
-  final Element frameElement;
-
   /** @domName DOMWindow.frames */
   final Window frames;
 
@@ -39993,9 +39976,6 @@ interface Window extends EventTarget {
   /** @domName DOMWindow.toolbar */
   final BarInfo toolbar;
 
-  /** @domName DOMWindow.top */
-  final Window top;
-
   /** @domName DOMWindow.webkitIndexedDB */
   final IDBFactory webkitIndexedDB;