CancelableTaskTracker::PostDelayedTask() support

base/task/cancelable_task_tracker_unittest.cc

Index: base/task/cancelable_task_tracker_unittest.cc
diff --git a/base/task/cancelable_task_tracker_unittest.cc b/base/task/cancelable_task_tracker_unittest.cc
index 8b2b86a6a52ed7e717261d49ef69a331ec93ffb7..c810f1dbb5cdf1f34d70a9c5b4fd3c367aebcf0d 100644
--- a/base/task/cancelable_task_tracker_unittest.cc
+++ b/base/task/cancelable_task_tracker_unittest.cc
@@ -430,4 +430,31 @@ TEST_F(CancelableTaskTrackerDeathTest, CancelAllOnDifferentThread) {
   test_task_runner->RunUntilIdle();
 }
 
+TEST_F(CancelableTaskTrackerTest, PostDelayedTask) {
+  scoped_refptr<TestSimpleTaskRunner> test_task_runner(
+      new TestSimpleTaskRunner());
+
+  EXPECT_FALSE(task_tracker_.HasTrackedTasks());
+
+  EXPECT_NE(CancelableTaskTracker::kBadTaskId, task_tracker_.PostDelayedTask(
+      test_task_runner.get(),
+      FROM_HERE,
+      MakeExpectedRunClosure(FROM_HERE),
+      TimeDelta()));
+
+  EXPECT_NE(CancelableTaskTracker::kBadTaskId, task_tracker_.PostDelayedTask(
+      test_task_runner.get(),
+      FROM_HERE,
+      MakeExpectedRunClosure(FROM_HERE),
+      TimeDelta(TimeDelta::FromMilliseconds(1))));
+
+  test_task_runner->RunUntilIdle();
+
+  EXPECT_TRUE(task_tracker_.HasTrackedTasks());
+
+  RunCurrentLoopUntilIdle();
+
+  EXPECT_FALSE(task_tracker_.HasTrackedTasks());
+}
+
 }  // namespace base