Fix dartium tests after legacy getter removal

sdk/lib/html/src/native_DOMImplementation.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.
 
 part of html;
 
 class _Utils {
   static List convertToList(List list) {
     // FIXME: [possible optimization]: do not copy the array if Dart_IsArray is fine w/ it.
     final length = list.length;
@@ skipping 33 matching lines @@
   _NPObject.internal();
   static _NPObject retrieve(String key) native "NPObject_retrieve";
   property(String propertyName) native "NPObject_property";
   invoke(String methodName, [List args = null]) native "NPObject_invoke";
 }
 
 class _DOMWindowCrossFrame extends NativeFieldWrapperClass1 implements Window {
   _DOMWindowCrossFrame.internal();
 
   // Fields.
-  History get history() native "DOMWindow_history_cross_frame_Getter";
-  Location get location() native "DOMWindow_location_cross_frame_Getter";
-  bool get closed() native "DOMWindow_closed_Getter";
-  int get length() native "DOMWindow_length_Getter";
-  Window get opener() native "DOMWindow_opener_Getter";
-  Window get parent() native "DOMWindow_parent_Getter";
-  Window get top() native "DOMWindow_top_Getter";
+  History get history native "DOMWindow_history_cross_frame_Getter";
+  Location get location native "DOMWindow_location_cross_frame_Getter";
+  bool get closed native "DOMWindow_closed_Getter";
+  int get length native "DOMWindow_length_Getter";
+  Window get opener native "DOMWindow_opener_Getter";
+  Window get parent native "DOMWindow_parent_Getter";
+  Window get top native "DOMWindow_top_Getter";
 
   // Methods.
   void close() native "DOMWindow_close_Callback";
   void postMessage(/*SerializedScriptValue*/ message, String targetOrigin, [List messagePorts]) native "DOMWindow_postMessage_Callback";
 
   // Implementation support.
   String get typeName => "DOMWindow";
 }
 
 class _HistoryCrossFrame extends NativeFieldWrapperClass1 implements History {
@@ skipping 35 matching lines @@
   bool get isEmpty => Maps.isEmpty(this);
 }
 
 get _printClosure => (s) {
   try {
     window.console.log(s);
   } catch (_) {
     _Utils.print(s);
   }
 };