Enable Opera testing

tests/isolate/isolate.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.
 
 [ $runtime == vm ]
 isolate2_negative_test: Skip  # Need to resolve correct behaviour.
 serialization_test: Skip  # tests dart2js-specific serialization code
 spawn_uri_test: Fail, OK # test uses a ".js" suffix that is bogus on vm.
 compute_this_script_browser_test: Skip # browser specific test
 timer_not_available_test: Fail, OK # only meant to test when there is no way to
@@ skipping 23 matching lines @@
 mixed2_test: Pass,Fail              # Depends on 32/64 bit Safari. See Issue 1120
 message_test: Skip
 
 # TODO(ager): Update these.
 [ $runtime == ie && $system == windows ]
 v2*: Skip
 
 [ $runtime == safari && $system == macos ]
 v2*: Skip
 
+[ $runtime == opera ]
+# TODO(kasperl): Triage these tests.
+isolate2_negative_test: Skip
+unresolved_ports_negative_test: Skip
+
 [ $runtime == ie && ($system == linux || $system == mac) ]
 *: Skip
 
 [ $runtime == safari && ($system == linux || $system == windows) ]
 *: Skip
 
-# TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
-[ $runtime == opera ]
-*: Skip
-
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == arm ]
 *: Skip
 
 [ $compiler == dart2js && $browser ]
 spawn_uri_test: Skip # dart2js does not support spawnUri yet
 spawn_uri_negative_test: Skip # ditto
 spawn_uri_vm_test: Skip # test uses a ".dart" suffix that only works in vm.
@@ skipping 12 matching lines @@
 multiple_timer_test: Fail,OK # Needs Timer to run.
 timer_test: Fail,OK # Needs Timer to run.
 timer_repeat_test: Fail,OK # Needs Timer to run.
 
 [ $compiler == dart2js && $runtime == none ]
 *: Fail, Pass # TODO(ahe): Triage these tests.
 
 [ $compiler == dart2dart ]
 # Skip until we stabilize language tests.
 *: Skip