Revert of Adds TimeDomains to the TaskQueueManager

components/scheduler/base/real_time_domain.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_REAL_TIME_DOMAIN_H_
-#define COMPONENTS_SCHEDULER_BASE_REAL_TIME_DOMAIN_H_
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "components/scheduler/base/time_domain.h"
-#include "components/scheduler/scheduler_export.h"
-
-namespace scheduler {
-class TaskQueueManagerDelegate;
-
-class SCHEDULER_EXPORT RealTimeDomain : public TimeDomain {
- public:
-  RealTimeDomain(TaskQueueManagerDelegate* task_queue_manager_delegate,
-                 base::Closure do_work_closure);
-
-  // TimeDomain implementation:
-  LazyNow CreateLazyNow() override;
-  bool MaybeAdvanceTime() override;
-  const char* GetName() const override;
-
- protected:
-  void RequestWakeup(base::TimeDelta delay) override;
-  void AsValueIntoInternal(
-      base::trace_event::TracedValue* state) const override;
-
- private:
-  TaskQueueManagerDelegate* task_queue_manager_delegate_;  // NOT OWNED
-  base::Closure do_work_closure_;
-
-  ~RealTimeDomain() override;
-
-  DISALLOW_COPY_AND_ASSIGN(RealTimeDomain);
-};
-
-}  // namespace scheduler
-
-#endif  // COMPONENTS_SCHEDULER_BASE_REAL_TIME_DOMAIN_H_