Task Scheduler.

base/task_scheduler/task.h

+// Copyright 2016 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.
+
+#ifndef BASE_TASK_SCHEDULER_TASK_H_
+#define BASE_TASK_SCHEDULER_TASK_H_
+
+#include "base/base_export.h"
+#include "base/callback_forward.h"
+#include "base/location.h"
+#include "base/pending_task.h"
+#include "base/task_scheduler/task_traits.h"
+#include "base/time/time.h"
+
+namespace base {
+namespace task_scheduler {
+
+// A task is a unit of work inside the task scheduler.
+struct BASE_EXPORT Task : public PendingTask {
+  Task();
+  Task(const tracked_objects::Location& posted_from,
+       const Closure& task,
+       const TaskTraits& traits,
+       const TimeTicks& post_time);
+  ~Task();
+
+  // The traits describing where, when and how the task should run.
+  TaskTraits traits;
+
+  // The time at which the task was posted. For a delayed task, this is the time
+  // at which the task was inserted in its sequence after its delay expired; not
+  // the time at which it was initially sent to a task scheduler.
+  TimeTicks post_time;
+};
+
+}  // namespace task_scheduler
+}  // namespace base
+
+#endif  // BASE_TASK_SCHEDULER_TASK_H_