Enable cross frame window operations

tests/html/html.status

 # 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.
 
 event_test: Skip  # Issue 1996
 webgl_1_test: Skip  # Issue 1495
 xmldocument_test: Skip  # XML in dart:html is incomplete
 xmlelement_test: Skip  # XML in dart:html is incomplete
 measurement_test: Pass, Fail  # Issue 1940
 
@@ skipping 15 matching lines @@
 request_animation_frame_test: Skip   # drt hangs
 
 [ $compiler == frog && ($runtime == drt || $runtime == ie || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == opera) ]
 fileapi_test: Skip # Timeout, issue 3022, FileSystem API not supported.
 window_nosuchmethod_test: Fail # Issue 1837, frog puts top-level members in the global JS namespace.
 
 [ $runtime == ie || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == opera || ($runtime == drt && $compiler == frog)]
 # TODO(vsm): Triage DOM tests.
 dom_isolates_test: Fail
 indexeddb_2_test: Fail  # Issue 1883 - IndexedDB methods don't handle maps correctly.
-window_open_test: Fail
 
 [ $runtime == dartium || $runtime == chrome || $runtime == ie || $runtime == safari || $runtime == ff || $runtime == opera ]
 history_test: Fail
 
 [ $runtime == chrome ]
 cssstyledeclaration_test: Fail
 
 [ $runtime == ie ]
 typed_arrays_1_test: Skip   # ie9 does not have typed arrays.
 typed_arrays_2_test: Skip
@@ skipping 122 matching lines @@
 request_animation_frame_test: Skip # Async test hangs.
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == chrome || $runtime == ff) ]
 isolates_test: Skip   # Timeout because leg does not support web workers.
 typed_arrays_1_test: Fail # dart2js doesn't support is checks with generic types.
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == ff) && $system == linux]
 indexeddb_3_test: Fail  # Caught Error: DATA_ERR: DOM IDBDatabase Exception 5 Error: The data provided does not meet the requirements of the function.
 # DOM errors.
 indexeddb_2_test: Fail # Uncaught error
-window_open_test: Fail # TypeError: Object [object Window] has no method 'close$0'
 
 [ $compiler == dart2js && $runtime == chrome ]
 # TODO(sra): Triage incompatibility issue.
 indexeddb_3_test: Fail  # DATA_ERR: DOM IDBDatabase Exception 5 Error: The data provided does not meet the requirements of the function.
 
 [ $compiler == dart2js && $runtime == chrome && $system == macos ]
 element_test: Fail # method not found: 'get$add'
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == ff ]
 cache_test: Fail # Expectation: ApplicationCache. Caught NoSuchMethodException : method not found: 'get$status'
 canvas_pixel_array_type_alias_test: Fail # Expectation: CreateImageData. Caught NoSuchMethodException : method not found: 'get$data'
 xhr_test: Skip # Timeout
 inner_frame_test: Skip # Timeout
 svg_3_test: Skip # Timeout
 documentfragment_test: Skip # Timeout
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == chrome && $system == windows]
 css_test: Pass, Fail # Issue #2823
 element_test: Fail # method not found: 'get$add'
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == drt && $system == macos ]
 indexeddb_2_test: Fail # Issue 3669.
 indexeddb_3_test: Fail # Issue 3670.
-window_open_test: Fail # Issue 3671.