Converted Observatory heap-snapshot element

runtime/observatory/lib/src/elements/class_view.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.
 
 library class_view_element;
 
 import 'dart:async';
 import 'observatory_element.dart';
 import 'sample_buffer_control.dart';
 import 'stack_trace_tree_config.dart';
 import 'cpu_profile/virtual_tree.dart';
+import 'package:observatory/heap_snapshot.dart';
 import 'package:observatory/elements.dart';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/service.dart';
 import 'package:observatory/repositories.dart';
 import 'package:polymer/polymer.dart';
 
 @CustomTag('class-view')
 class ClassViewElement extends ObservatoryElement {
   @published Class cls;
   @observable ServiceMap instances;
@@ skipping 13 matching lines @@
   }
 
   Future<ServiceObject> reachable(var limit) {
     return cls.isolate.getInstances(cls, limit).then((ServiceMap obj) {
       instances = obj;
     });
   }
 
   Future<ServiceObject> retainedToplist(var limit) {
     return cls.isolate.fetchHeapSnapshot(true).last
+      .then((RawHeapSnapshot raw) async {
+        final snapshot = new HeapSnapshot();
+        await snapshot.loadProgress(cls.isolate, raw);
+        return snapshot;
+      })
       .then((HeapSnapshot snapshot) =>
-          Future.wait(snapshot.getMostRetained(classId: cls.vmCid,
+          Future.wait(snapshot.getMostRetained(cls.isolate, classId: cls.vmCid,
                                                limit: 10)))
       .then((List<ServiceObject> most) {
         mostRetained = new ObservableList.from(most);
       });
   }
 
   // TODO(koda): Add no-arg "calculate-link" instead of reusing "eval-link".
   Future<ServiceObject> reachableSize(var dummy) {
     return cls.isolate.getReachableSize(cls).then((Instance obj) {
       reachableBytes = int.parse(obj.valueAsString);
@@ skipping 60 matching lines @@
   Future toggleAllocationTrace() {
     if (cls == null) {
       return new Future(refresh);
     }
     if (cls.traceAllocations) {
       refreshAllocationProfile();
     }
     return cls.setTraceAllocations(!cls.traceAllocations).whenComplete(refresh);
   }
 }