Revert 7788. These tests were marked as fail/flaky with no further action to be

tests/dom/dom.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.
 
 webgl_1_test: Skip  # Issue 1495
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium) ]
 indexeddb_3_test: Fail  # UnsupportedOperationException 'IDBCursorImplementation.get:key'
 
 [ $compiler == none && $runtime == dartium ]
@@ skipping 75 matching lines @@
 # a browser environment.
 [ $compiler == dartc ]
 *: Skip
 
 [ $runtime == vm ]
 *: Skip
 
 [ $compiler == frog && $runtime == d8 ]
 *: Skip
 
-[ ($compiler == frog || $compiler == dart2js) && ($runtime == chrome || $runtime == drt) ]
+[ $compiler == frog && $runtime == chrome ]
 css_test: Pass, Fail # Test is flaky Issue #2823
 
 # TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
 [ $runtime == opera ]
 *: Skip
 
 [ $compiler == frog && $runtime == none ]
 *: Skip
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == chrome || $runtime == ff) ]
 dom_isolates_test: Fail # spawnDomIsolate is not implemented.
 request_animation_frame_test: Skip  # Async test hangs.
 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.
 htmlelement_test: Fail # NoSuchMethodException : method not found: 'isEmpty$0' Receiver: Instance of 'DOMStringMap'
 
 [ $compiler == dart2js && $runtime == drt ]
 indexeddb_3_test: Fail
 
 # DOM errors.
 window_open_test: Fail # TypeError: Object [object Window] has no method 'close$0'
 indexeddb_2_test: Fail # Uncaught error
 
 [ $compiler == dart2js && $runtime == none ]
 *: Fail, Pass # TODO(ahe): Triage these tests.