pkg/isolate: library renaming, removed unused method, fix creation of TimeoutException

test/registry_test.dart

 // Copyright (c) 2015, 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.
 
 library dart.pkg.isolate.test.registry;
 
-import "package:isolate/isolaterunner.dart";
-import "package:isolate/registry.dart";
-import "dart:async";
-import "dart:isolate";
+import 'dart:async';
+import 'dart:isolate';
 
-import "package:unittest/unittest.dart";
+import 'package:isolate/isolate_runner.dart';
+import 'package:isolate/registry.dart';
+
+import 'package:unittest/unittest.dart';
 
 const MS = const Duration(milliseconds: 1);
 
 void main() {
   testLookup();
   testAddLookup();
   testAddRemoveTags();
   testRemove();
   testCrossIsolate();
   testTimeout();
@@ skipping 506 matching lines @@
 }
 
 class Element {
   final int id;
   Element(this.id);
   int get hashCode => id;
   bool operator ==(Object other) => other is Element && id == other.id;
 }
 
 void topLevelFunction() {}