Converted Observatory heap-snapshot element

runtime/observatory/lib/src/models/objects/heap_snapshot.dart

Index: runtime/observatory/lib/src/models/objects/heap_snapshot.dart
diff --git a/runtime/observatory/lib/src/models/objects/heap_snapshot.dart b/runtime/observatory/lib/src/models/objects/heap_snapshot.dart
new file mode 100644
index 0000000000000000000000000000000000000000..19392f9eb326f43a1878561cc7a1cec63b470dd1
--- /dev/null
+++ b/runtime/observatory/lib/src/models/objects/heap_snapshot.dart
@@ -0,0 +1,44 @@
+// Copyright (c) 2016, 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 models;
+
+abstract class HeapSnapshot {
+  DateTime get timestamp;
+  int get objects;
+  int get references;
+  int get size;
+  HeapSnapshotDominatorNode get dominatorTree;
+  Iterable<HeapSnapshotClassReferences> get classReferences;
+}
+
+abstract class HeapSnapshotDominatorNode {
+  int get shallowSize;
+  int get retainedSize;
+  Future<ObjectRef> get object;
+  Iterable<HeapSnapshotDominatorNode> get children;
+}
+
+abstract class HeapSnapshotClassReferences {
+  ClassRef get clazz;
+  int get instances;
+  int get shallowSize;
+  int get retainedSize;
+  Iterable<HeapSnapshotClassInbound> get inbounds;
+  Iterable<HeapSnapshotClassOutbound> get outbounds;
+}
+
+abstract class HeapSnapshotClassInbound {
+  ClassRef get source;
+  int get count;
+  int get shallowSize;
+  int get retainedSize;
+}
+
+abstract class HeapSnapshotClassOutbound {
+  ClassRef get target;
+  int get count;
+  int get shallowSize;
+  int get retainedSize;
+}