Converted Observatory heap-snapshot element

runtime/observatory/tests/observatory_ui/mocks/repositories/heap_snapshot.dart

Index: runtime/observatory/tests/observatory_ui/mocks/repositories/heap_snapshot.dart
diff --git a/runtime/observatory/tests/observatory_ui/mocks/repositories/heap_snapshot.dart b/runtime/observatory/tests/observatory_ui/mocks/repositories/heap_snapshot.dart
new file mode 100644
index 0000000000000000000000000000000000000000..42f93e3cbbc981d82f07298f0ada988af38723f9
--- /dev/null
+++ b/runtime/observatory/tests/observatory_ui/mocks/repositories/heap_snapshot.dart
@@ -0,0 +1,47 @@
+// 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 mocks;
+
+class HeapSnapshotLoadingProgressEventMock
+    implements M.HeapSnapshotLoadingProgressEvent {
+  final M.HeapSnapshotLoadingProgress progress;
+
+  const HeapSnapshotLoadingProgressEventMock(
+      {this.progress: const HeapSnapshotLoadingProgressMock()});
+}
+
+class HeapSnapshotLoadingProgressMock implements M.HeapSnapshotLoadingProgress {
+  final M.HeapSnapshotLoadingStatus status;
+  final String stepDescription;
+  final double progress;
+  final Duration fetchingTime;
+  final Duration loadingTime;
+  final M.HeapSnapshot snapshot;
+
+  const HeapSnapshotLoadingProgressMock({
+      this.status : M.HeapSnapshotLoadingStatus.fetching, this.progress: 0.0,
+      this.stepDescription: '', this.fetchingTime, this.loadingTime,
+      this.snapshot});
+}
+
+typedef Stream<M.HeapSnapshotLoadingProgressEvent>
+    HeapSnapshotRepositoryMockCallback(M.IsolateRef cls, bool gc);
+
+class HeapSnapshotRepositoryMock
+    implements M.HeapSnapshotRepository {
+  final HeapSnapshotRepositoryMockCallback _get;
+
+  Stream<M.HeapSnapshotLoadingProgressEvent> get(M.IsolateRef isolate,
+                                               {bool gc: false}) {
+    if (_get != null) {
+      return _get(isolate, gc);
+    }
+    return null;
+  }
+
+  HeapSnapshotRepositoryMock(
+      {HeapSnapshotRepositoryMockCallback getter})
+    : _get = getter;
+}