Fix Timers in isolates in dart2js.

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
                                    # implement timer (currently only in d8)
+timer_isolate_test: Skip # See Issue 4997
 
 [ $compiler == none && $runtime == drt ]
 serialization_test: Skip  # tests dart2js-specific serialization code
 spawn_uri_test: Skip # uses a .js extension (not for dartium)
 spawn_uri_negative_test: Skip # ditto
 spawn_uri_vm_test: Skip # not implemented in dartium yet.
 spawn_uri_vm_negative_test: Skip
+timer_isolate_test: Pass, Fail # See Issue 4997
 timer_not_available_test: Fail, OK # only meant to test when there is no way to
                                    # implement timer (currently only in d8)
 
 [ $compiler == dartc ]
 serialization_test: Skip  # tests dart2js-specific serialization code
 isolate_negative_test: Fail    # status change with --check-only
 isolate2_negative_test: Fail   # status change with --check-only
 spawn_function_negative_test: Fail, OK # Fails at runtime.
 spawn_uri_negative_test: Fail, OK # Fails at runtime.
 spawn_uri_vm_negative_test: Fail, OK # Fails at runtime.
 unresolved_ports_negative_test: Fail, OK # Fails at runtime.
 
 [ $compiler == dart2js ]
 serialization_test: Fail # Tries to access class TestingOnly declared in isolate_patch.dart
 
 [ $runtime == safari ]
 cross_isolate_message_test: Skip      # Depends on 32/64 bit Safari. See Issue 1120
 mixed_test: Pass,Fail               # Depends on 32/64 bit Safari. See Issue 1120
 mixed2_test: Pass,Fail              # Depends on 32/64 bit Safari. See Issue 1120
 message_test: Skip
 
 [ $runtime == ff ]
 # FF setTimeout can fire early: https://bugzilla.mozilla.org/show_bug.cgi?id=291386
+multiple_timer_test: Pass, Fail
+timer_isolate_test: Pass, Fail
 timer_test: Pass, Fail
-multiple_timer_test: Pass, Fail
 
 [ $runtime == ff && $system == windows ]
 message2_test: Skip # http://dartbug.com/5744 (bug causes hang, so skip test)
 
 # TODO(ager): Update these.
 [ $runtime == ie && $system == windows ]
 v2*: Skip
 
 [ $runtime == safari && $system == macos ]
 v2*: Skip
@@ skipping 16 matching lines @@
 
 [ $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.
 spawn_uri_vm_negative_test: Skip # ditto above.
 timer_not_available_test: Fail, OK # only meant to test when there is no way to
                                    # implement timer (currently only in d8)
 
 [ $compiler == dart2js && $runtime == d8 ]
+multiple_timer_test: Fail,OK # Needs Timer to run.
+spawn_uri_negative_test: Pass # for the wrong reasons (not supported in d8)
 spawn_uri_test: Fail, OK # loading another file is not supported in d8
-spawn_uri_negative_test: Pass # for the wrong reasons (not supported in d8)
+spawn_uri_vm_negative_test: Skip # ditto above.
 spawn_uri_vm_test: Skip # test uses a ".dart" suffix that only works in vm.
-spawn_uri_vm_negative_test: Skip # ditto above.
 timer_cancel_test: Fail,OK # Needs Timer to run.
 timer_cancel1_test: Fail,OK # Needs Timer to run.
 timer_cancel2_test: Fail,OK # Needs Timer to run.
-multiple_timer_test: Fail,OK # Needs Timer to run.
+timer_isolate_test: Fail, OK # Needs Timer to run.
+timer_repeat_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