scheduler: Move the Blink scheduler into Blink

components/scheduler/renderer/auto_advancing_virtual_time_domain.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 COMPONENTS_SCHEDULER_RENDERER_AUTO_ADVANCING_VIRTUAL_TIME_DOMAIN_H_
-#define COMPONENTS_SCHEDULER_RENDERER_AUTO_ADVANCING_VIRTUAL_TIME_DOMAIN_H_
-
-#include "base/macros.h"
-#include "components/scheduler/base/virtual_time_domain.h"
-
-namespace scheduler {
-
-// A time domain that runs tasks sequentially in time order but doesn't sleep
-// between delayed tasks.
-//
-// KEY: A-E are delayed tasks
-// |    A   B C  D           E  (Execution with RealTimeDomain)
-// |-----------------------------> time
-//
-// |ABCDE                       (Execution with AutoAdvancingVirtualTimeDomain)
-// |-----------------------------> time
-class SCHEDULER_EXPORT AutoAdvancingVirtualTimeDomain
-    : public VirtualTimeDomain {
- public:
-  explicit AutoAdvancingVirtualTimeDomain(base::TimeTicks initial_time);
-  ~AutoAdvancingVirtualTimeDomain() override;
-
-  // TimeDomain implementation:
-  bool MaybeAdvanceTime() override;
-  void RequestWakeup(base::TimeTicks now, base::TimeDelta delay) override;
-  const char* GetName() const override;
-
-  // Controls whether or not virtual time is allowed to advance, when the
-  // TaskQueueManager runs out of immediate work to do.
-  void SetCanAdvanceVirtualTime(bool can_advance_virtual_time);
-
- private:
-  bool can_advance_virtual_time_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutoAdvancingVirtualTimeDomain);
-};
-
-}  // namespace scheduler
-
-#endif  // COMPONENTS_SCHEDULER_RENDERER_AUTO_ADVANCING_VIRTUAL_TIME_DOMAIN_H_