Revert html/canvasrenderingcontext2d_test suppression from html status

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 47 matching lines @@
 audiobuffersourcenode_test: Pass, Fail
 
 [ $compiler == none && $runtime == drt && $system == linux]
 documentfragment_test: Pass, Timeout
 
 [$runtime == ie10 ]
 # TODO(efortuna, blois): Triage.
 audiobuffersourcenode_test: Fail
 audiocontext_test: Fail
 css_test: Fail
-canvasrenderingcontext2d_test: Fail #TODO(efortuna): Issue 7711
 document_test/getCssCanvasContext: Fail # IE does not support this.
 element_test/additionalConstructors: Fail
 element_test/click: Fail                # IE does not support firing this event.
 element_types_test/supported_content: Fail
 element_types_test/supported_details: Fail
 element_types_test/supported_keygen: Fail
 element_types_test/supported_meter: Fail
 element_types_test/supported_object: Fail
 element_types_test/supported_output: Fail
 element_types_test/supported_shadow: Fail
@@ skipping 211 matching lines @@
 request_animation_frame_test: Skip # Async test hangs.
 
 [ $compiler == dart2js && ($runtime == drt || $runtime == chrome || $runtime == ff || $runtime == safari) ]
 isolates_test: Skip   # Timeout because leg does not support web workers.
 
 [ $compiler == dart2js && $runtime == ff ]
 xhr_test: Skip # Timeout
 inner_frame_test: Skip # Timeout
 svg_3_test: Skip # Timeout
 documentfragment_test: Skip # Timeout