Enable Opera testing

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
 
@@ skipping 78 matching lines @@
 xhr_test: Skip              # BUG(4016)
 
 
 [ $runtime == safari ]
 canvas_pixel_array_type_alias_test: Fail # Caught TypeError: 'undefined' is not a function
 cssstyledeclaration_test: Fail
 node_test: Fail
 svgelement_test: Fail
 svgelement2_test: Fail
 
+[ $runtime == opera ]
+# TODO(kasperl): All of the following failures should be investigated and
+# triaged into bug reports.
+callbacks_test: Fail
+cache_test: Fail
+audiocontext_test: Fail
+blob_constructor_test: Fail
+canvas_using_html_test: Fail
+canvas_test: Fail
+css_test: Fail
+cssstyledeclaration_test: Fail
+element_constructor_1_test: Fail
+exceptions_test: Fail
+element_test: Crash
+indexeddb_1_test: Fail
+indexeddb_3_test: Fail
+indexeddb_4_test: Fail
+mutationobserver_test: Fail
+performance_api_test: Fail
+serialized_script_value_test: Fail
+svg_3_test: Fail
+svgelement_test: Fail
+typed_arrays_1_test: Fail
+typed_arrays_arraybuffer_test: Fail
+websocket_test: Fail
+xhr_test: Fail
+fileapi_test: Skip
+js_interop_3_test: Skip
+js_interop_4_test: Skip
+isolates_test: Skip
+
 [ $runtime == ff ]
 audiocontext_test: Fail      # FF only has Audio element
 css_test: Fail               # No analog to WebKitCSSMatrix
 cssstyledeclaration_test: Fail
 callbacks_test: Fail         # (webkit|moz|ms)RequestAnimationFrame
 canvas_test: Fail            # No setFillColor() method.  Use fillstyle attribute instead.
 canvas_using_html_test: Fail # No setFillColor() method.  Use fillstyle attribute instead.
 dart_object_local_storage_test: Skip  # sessionStorage NS_ERROR_DOM_NOT_SUPPORTED_ERR
 documentfragment_test: Fail
 element_test: Fail
@@ skipping 40 matching lines @@
 
 # 'html' tests import the HTML library, so they only make sense in
 # a browser environment.
 [ $compiler == dartc ]
 *: Skip
 
 [ $runtime == vm ]
 *: Skip
 
 # TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
-[ $runtime == opera ]
-*: Skip
 
 [ $compiler == dart2js && $runtime == drt ]
 fileapi_test: Skip # Issue 3022
 # Unknown error - should investigate.
 measurement_test: Fail
 htmloptionscollection_test: Fail # Issue 3813.
 unknownelement_test: Fail # Issue 4189
 
 [ $compiler == dart2js && $runtime == none ]
 *: Fail, Pass # TODO(ahe): Triage these tests.
@@ skipping 35 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.