Fixing a bunch of dartc errors in dart:html tests.

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.
 
 window_open_test: Skip # http://dartbug.com/5151
 
 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
@@ skipping 268 matching lines @@
 xhr_test: Fail
 
 [ $runtime == ie9 && ($system == linux || $system == macos) ]
 *: Skip
 
 [ $runtime == safari && ($system == linux || $system == windows) ]
 *: Skip
 
 # 'html' tests import the HTML library, so they only make sense in
 # a browser environment.
-[ $compiler == dartc ]
-
-# pkg/unittest issue 7394
-document_test: Fail
-documentfragment_test: Fail
-element_add_test: Fail
-element_test: Fail
-htmlelement_test: Fail
-input_element_test: Fail
-node_test: Fail
-svgelement_test: Fail
-svgelement2_test: Fail
-
-# test issue 7065
-#documentfragment_test: Fail # test issue 7065
-#element_add_test: Fail      # test issue 7065
-#element_test: Fail          # test issue 7065
-#node_test: Fail             # test issue 7065
-#svgelement_test: Fail       # test issue 7065
-#svgelement2_test: Fail      # test issue 7065
-
 [ $runtime == vm ]
 *: Skip
 
 # TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
 
 [ $compiler == dart2js && $runtime == drt ]
 # Unknown error - should investigate.
 unknownelement_test: Fail # Issue 4189
 
 [ $compiler == dart2js && $runtime == none ]
@@ skipping 10 matching lines @@
 typed_arrays_1_test: Fail # dart2js doesn't support is checks with generic types.
 
 [ $compiler == dart2js && $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.
 
 [ $compiler == dart2js && $runtime == ff ]
 xhr_test: Skip # Timeout
 inner_frame_test: Skip # Timeout
 svg_3_test: Skip # Timeout
 documentfragment_test: Skip # Timeout