Standardize on using "kind" to distinguish sub-varieties of a type.

runtime/observatory/lib/src/app/application.dart

 // Copyright (c) 2013, 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.
 
 part of app;
 
 class Notification {
   Notification.fromEvent(this.event);
   Notification.fromException(this.exception, this.stacktrace);
 
@@ skipping 67 matching lines @@
   void removePauseEvents(Isolate isolate) {
     notifications.removeWhere((notification) {
         var event = notification.event;
         return (event != null &&
                 event.isolate == isolate &&
                 event.isPauseEvent);
       });
   }
 
   void _onEvent(ServiceEvent event) {
-    switch(event.eventType) {
+    switch(event.kind) {
       case ServiceEvent.kIsolateStart:
       case ServiceEvent.kIsolateUpdate:
       case ServiceEvent.kGraph:
       case ServiceEvent.kBreakpointAdded:
       case ServiceEvent.kBreakpointResolved:
       case ServiceEvent.kBreakpointRemoved:
       case ServiceEvent.kGC:
         // Ignore for now.
         break;
 
@@ skipping 103 matching lines @@
       targets = new TargetManager() {
     _locationManager = new LocationManager(this);
     vm = new WebSocketVM(targets.defaultTarget);
     _initOnce();
   }
 
   void _removeDisconnectEvents() {
     notifications.removeWhere((notification) {
         var event = notification.event;
         return (event != null &&
-                event.eventType == ServiceEvent.kConnectionClosed);
+                event.kind == ServiceEvent.kConnectionClosed);
       });
   }
 
   loadCrashDump(Map crashDump) {
     this.vm = new FakeVM(crashDump['result']);
     app.locationManager.go('#/vm');
   }
 
   void handleException(e, st) {
     // TODO(turnidge): Report this failure via analytics.
     Logger.root.warning('Caught exception: ${e}\n${st}');
     notifications.add(new Notification.fromException(e, st));
   }
 }