Enable Opera 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: Fail, Pass # 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 167 matching lines @@
 exceptions_test: Fail
 instance_of_test: Fail
 mutationobserver_test: Fail
 native_gc_test: Fail
 node_test: Fail
 serialized_script_value_test: Fail
 svgelement2_test: Fail
 svgelement_test: Fail
 url_test: Fail
 
+[ $runtime == opera ]
+audiobuffersourcenode_test: Fail
+cache_test: Fail
+canvas_test: Pass,Fail
+contentelement_test: Fail
+audiocontext_test: Fail
+blob_constructor_test: Fail
+canvas_using_html_test: Fail
+canvas_test: Fail
+css_test: Fail
+cssstyledeclaration_test: Fail
+element_add_test: Fail
+element_constructor_1_test: Fail
+element_webkit_test: Fail
+exceptions_test: Fail
+element_test: Crash
+indexeddb_1_test: Fail
+indexeddb_2_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
+svgelement2_test: Fail
+typed_arrays_1_test: Fail
+typed_arrays_arraybuffer_test: Fail
+url_test: Fail
+websocket_test: Fail
+fileapi_test: Skip # Timeout.
+inner_frame_test: Skip # Timeout.
+js_interop_3_test: Skip # Timeout.
+js_interop_4_test: Skip # Timeout.
+isolates_test: Skip # Timeout.
+websql_test: Skip # Timeout.
+
 [ $runtime == ff ]
 audiobuffersourcenode_test: Fail # FF only has Audio element.
 audiocontext_test: Fail      # FF only has Audio element
 css_test: Fail               # No analog to WebKitCSSMatrix
 contentelement_test: Fail    # FF does not support content element.
 dart_object_local_storage_test: Skip  # sessionStorage NS_ERROR_DOM_NOT_SUPPORTED_ERR
 documentfragment_test: Fail
 element_webkit_test: Fail
 exceptions_test: Fail      # Uses webkitotifications, no analogue in moz
 fileapi_test: Fail         # FF does not support filesystem APIs.
@@ skipping 22 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 ]
 # Unknown error - should investigate.
 htmloptionscollection_test: Fail # Issue 3813.
 unknownelement_test: Fail # Issue 4189
 
 [ $compiler == dart2js && $runtime == none ]
 *: Fail, Pass # TODO(ahe): Triage these tests.
 
 [ $compiler == dart2js ]
@@ skipping 13 matching lines @@
 xhr_test: Skip # Timeout
 inner_frame_test: Skip # Timeout
 svg_3_test: Skip # Timeout
 documentfragment_test: Skip # Timeout
 
 [ $compiler == dart2js && $runtime == chrome && $system == windows]
 css_test: Pass, Fail # Issue #2823
 
 [ $compiler == dart2js && $checked && $browser]
 fileapi_test: Fail # TypeError: Object #<DirectoryEntry> has no method 'get$name'