Unsuppress test now that Firefox on bots is updated. Bug 23479

tests/html/html.status

 # Copyright (c) 2013, 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.
 
 interactive_test: Skip # Must be run manually.
 cross_frame_test: Skip # Test reloads itself. Issue 18558
 
 [ $compiler == none && ($runtime == dartium || $runtime == drt) ]
 
 js_array_test: Skip # Dartium JSInterop failure
@@ skipping 323 matching lines @@
 mutationobserver_test/supported: Fail
 performance_api_test/supported: Fail
 speechrecognition_test/supported: Fail
 websql_test/supported: Fail
 
 [  $compiler == dart2js && $runtime == ff ]
 history_test/history: Skip # Issue 22050
 xhr_test/xhr: Pass, Fail # Issue 11602
 dart_object_local_storage_test: Skip  # sessionStorage NS_ERROR_DOM_NOT_SUPPORTED_ERR
 webgl_1_test: Pass, Fail   # Issue 8219
-canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Pass, Fail # Firefox pre-38 does not like dataUrl videos for drawImage Issue 23479
 text_event_test: Fail # Issue 17893
 
 # Firefox Feature support statuses-
 # All changes should be accompanied by platform support annotation changes.
 document_test/supports_cssCanvasContext: Fail
 element_types_test/supported_details: Fail
 element_types_test/supported_embed: Fail
 element_types_test/supported_keygen: Fail
 element_types_test/supported_object: Fail
 fileapi_test/supported: Fail
@@ skipping 61 matching lines @@
 queryall_test: fail
 track_element_constructor_test: StaticWarning
 transferables_test: StaticWarning
 typed_arrays_range_checks_test: StaticWarning
 typing_test: StaticWarning
 webgl_1_test: StaticWarning
 window_nosuchmethod_test: StaticWarning
 
 [ $compiler == dart2js && $cps_ir ]
 resource_http_test: Crash # (await for(var b in r.openRead()){bytes.addAll(b);}): await for