Mark js_interop_2_test as failing on dart2js-chrome and dart2js-ff.

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
 
 # Isolate implementation is private after the unification - Issue 4651
 js_interop_3_test: Fail
 js_interop_4_test: Fail
 js_interop_func_passing_test: Fail
 
+[ $compiler == dart2js && ($runtime == chrome || $runtime == ff) ]
+js_interop_2_test: Fail  # Issue 4651
+
 [ $runtime == drt ]
 xhr_cross_origin_test: Skip  # Issue 4502: Passes with --allow-external-pages.
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) ]
 request_animation_frame_test: Skip   # drt hangs; requestAnimationFrame not implemented
 #htmloptionscollection_test: Fail # TODO(asiva): investigate.
 js_interop_2_test: Fail  # Issue 4651
 
 [ $compiler == none && $runtime == drt && $system == windows]
 audiocontext_test: Skip
@@ skipping 120 matching lines @@
 # Note this test now passes for the wrong reasons. It used to be that the only
 # forEach in this program was in NodeList. Due to dependencies from the unittest
 # framework, frog no longer resolves forEach statically, and instead it
 # dynamically binds forEach on a bunch of classes, including HTMLCollection.
 typing_test: Pass
 websocket_test: Pass, Fail # FF 10 is uses MozWebSocket, FF 11 uses WebSocket.
 # Exception... "Access to restricted URI denied" code: "1012" nsresult: "0x805303f4
 #    (NS_ERROR_DOM_BAD_URI) ...
 xhr_test: Fail
 
-[ $runtime == ff && $system == windows ]
-# TODO(vsm): Investigate why this is only failing on windows.
-js_interop_2_test: Fail
-
 [ $runtime == ie && ($system == linux || $system == macos) ]
 *: Skip
 
 [ $runtime == safari && ($system == linux || $system == windows) ]
 *: Skip
 
 [ $runtime == safari ]
 # TODO(vsm): Triage DOM failures.
 *: Skip
 
@@ skipping 50 matching lines @@
 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
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == drt && $system == macos ]
 indexeddb_2_test: Fail # Issue 3669.