Converted Observatory cpu-profile element

runtime/observatory/lib/src/models/repositories/sample_profile.dart

+// 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;
+
+enum SampleProfileTag {
+  UserVM,
+  UserOnly,
+  VMUser,
+  VMOnly,
+  None
+}
+
+enum SampleProfileLoadingStatus {
+  Disabled,
+  Fetching,
+  Loading,
+  Loaded
+}
+
+abstract class SampleProfileLoadingProgressEvent {
+  SampleProfileLoadingProgress get progress;
+}
+
+abstract class SampleProfileLoadingProgress {
+  SampleProfileLoadingStatus get status;
+  double get progress;
+  Duration get fetchingTime;
+  Duration get loadingTime;
+  SampleProfile get profile;
+
+  Stream<SampleProfileLoadingProgressEvent> get onProgress;
+}
+
+abstract class ClassSampleProfileRepository {
+  SampleProfileLoadingProgress get(ClassRef cls,
+      SampleProfileTag tag, {bool clear: false});
+}
+
+abstract class IsolateSampleProfileRepository {
+  SampleProfileLoadingProgress get(IsolateRef cls,
+      SampleProfileTag tag, {bool clear: false, bool forceFetch: false});
+}