Move PostTaskAndReplyWithStatus into task_runner_helpers.h

base/task_runner_unittest.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/task_runner.h"
+
+#include "base/bind.h"
+#include "base/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+
+namespace {
+
+int ReturnFourtyTwo() {
+  return 42;
+}
+
+void StoreValue(int* destination, int value) {
+  *destination = value;
+}
+
+}  // namespace
+
+TEST(TaskRunnerHelpersTest, PostAndReplyWithStatus) {
+  MessageLoop message_loop;
+  int result = 0;
+
+  message_loop.message_loop_proxy()->PostTaskAndReplyWithResult(
+      FROM_HERE,
+      Bind(&ReturnFourtyTwo),
+      Bind(&StoreValue, &result));
+
+  message_loop.RunAllPending();
+
+  EXPECT_EQ(42, result);
+}
+
+}  // namespace base