Converted Observatory cpu-profile element

runtime/observatory/tests/observatory_ui/mocks/objects/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 mocks;
+
+typedef M.FunctionCallTree SampleProfileMockLoadFunctionTreeCallback(
+    M.ProfileTreeDirection direction);
+typedef M.CodeCallTree SampleProfileMockLoadCodeTreeCallback(
+    M.ProfileTreeDirection direction);
+
+class SampleProfileMock implements M.SampleProfile {
+  final SampleProfileMockLoadFunctionTreeCallback _loadFunctionTree;
+  final SampleProfileMockLoadCodeTreeCallback _loadCodeTree;
+
+
+  final int sampleCount;
+  final int stackDepth;
+  final double sampleRate;
+  final double timeSpan;
+
+  M.FunctionCallTree loadFunctionTree(M.ProfileTreeDirection direction) {
+    if (_loadFunctionTree != null) {
+      return _loadFunctionTree(direction);
+    }
+    return null;
+  }
+  M.CodeCallTree loadCodeTree(M.ProfileTreeDirection direction) {
+    if (_loadCodeTree != null) {
+      return _loadCodeTree(direction);
+    }
+    return null;
+  }
+
+  SampleProfileMock({this.sampleCount: 0, this.stackDepth: 0,
+      this.sampleRate: 1.0, this.timeSpan: 1.0,
+      SampleProfileMockLoadFunctionTreeCallback loadFunctionTree,
+      SampleProfileMockLoadCodeTreeCallback loadCodeTree})
+    : _loadFunctionTree = loadFunctionTree,
+      _loadCodeTree = loadCodeTree;
+}