Converted Observatory vm-view && isolate-view elements

runtime/observatory/tests/service/pause_on_start_then_step_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.
 // VMOptions=--error_on_bad_type --error_on_bad_override
 
+import 'package:observatory/models.dart' as M;
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 import 'dart:async';
 
 void testMain() {
   print('Hello');
 }
 
 var tests = [
 
 (Isolate isolate) async {
   print('Getting stream...');
   Completer completer = new Completer();
   var stream = await isolate.vm.getEventStream(VM.kDebugStream);
   print('Subscribing...');
   var subscription;
   subscription = stream.listen((ServiceEvent event) {
     if (event.kind == ServiceEvent.kPauseStart) {
       print('Received $event');
       subscription.cancel();
       completer.complete();
     } else {
       print('Ignoring event $event');
     }
   });
   print('Subscribed.  Pause event is ${isolate.pauseEvent}');
 
   if (isolate.pauseEvent != null &&
-      isolate.pauseEvent.kind == ServiceEvent.kPauseStart) {
+      isolate.pauseEvent is M.PauseStartEvent) {
     // Wait for the isolate to hit PauseStart.
     subscription.cancel();
     print('Subscription cancelled.');
   } else {
     print('Waiting for pause start event.');
     await completer.future;
   }
   print('Done waiting for pause event.');
 
   // Grab the timestamp.
@@ skipping 37 matching lines @@
 },
 
 ];
 
 main(args) => runIsolateTests(args, tests,
                               testeeConcurrent: testMain,
                               pause_on_start: true,
                               pause_on_exit: true,
                               trace_service: true,
                               verbose_vm: true);