(reland) Adds TimeDomains to the TaskQueueManager

components/scheduler/base/delayed_task_delegate_impl.h

+// Copyright 2015 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 COMPONENTS_SCHEDULER_BASE_DELAYED_TASK_DELEGATE_IMPL_H_
+#define COMPONENTS_SCHEDULER_BASE_DELAYED_TASK_DELEGATE_IMPL_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "components/scheduler/base/delayed_task_delegate.h"
+#include "components/scheduler/scheduler_export.h"
+
+namespace scheduler {
+class TaskQueueManagerDelegate;
+
+class SCHEDULER_EXPORT DelayedTaskDelegateImpl : public DelayedTaskDelegate {
+ public:
+  DelayedTaskDelegateImpl(TaskQueueManagerDelegate* delegate,
+                          base::Closure do_work_closure);
+
+  // TimeSource implementation:
+  base::TimeTicks CachedNow() override;
+  void InvalidateNowCache() override;
+
+ protected:
+  // TimeSource protected implementation:

[Sami, 2015/11/17 10:31:06]

TimeSource?

[alex clarke (OOO till 29th), 2015/11/18 15:30:15]

Done.

+  bool BelongsToCurrentThread() const override;
+  void PostScheduleDelayedWorkTaskOnMainThread(
+      internal::TaskQueueImpl* queue,
+      base::TimeTicks delayed_run_time) override;
+  void ScheduleDoWork(base::TimeDelta delay) override;
+
+ private:
+  TaskQueueManagerDelegate* delegate_;  // NOT OWNED
+  base::TimeTicks cached_now_;
+  base::Closure do_work_closure_;
+  base::WeakPtrFactory<DelayedTaskDelegateImpl> weak_factory_;
+
+  ~DelayedTaskDelegateImpl() override;
+
+  DISALLOW_COPY_AND_ASSIGN(DelayedTaskDelegateImpl);
+};
+
+}  // namespace scheduler
+
+#endif  // COMPONENTS_SCHEDULER_BASE_DELAYED_TASK_DELEGATE_IMPL_H_