scheduler: Move the Blink scheduler into Blink

components/scheduler/child/compositor_worker_scheduler.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_CHILD_COMPOSITOR_WORKER_SCHEDULER_H_
-#define COMPONENTS_SCHEDULER_CHILD_COMPOSITOR_WORKER_SCHEDULER_H_
-
-#include "base/macros.h"
-#include "components/scheduler/child/single_thread_idle_task_runner.h"
-#include "components/scheduler/child/worker_scheduler.h"
-#include "components/scheduler/scheduler_export.h"
-
-namespace base {
-class Thread;
-}
-
-namespace scheduler {
-
-class SCHEDULER_EXPORT CompositorWorkerScheduler
-    : public WorkerScheduler,
-      public SingleThreadIdleTaskRunner::Delegate {
- public:
-  explicit CompositorWorkerScheduler(base::Thread* thread);
-  ~CompositorWorkerScheduler() override;
-
-  // WorkerScheduler:
-  void Init() override;
-
-  // ChildScheduler:
-  scoped_refptr<TaskQueue> DefaultTaskRunner() override;
-  scoped_refptr<scheduler::SingleThreadIdleTaskRunner> IdleTaskRunner()
-      override;
-  bool ShouldYieldForHighPriorityWork() override;
-  bool CanExceedIdleDeadlineIfRequired() const override;
-  void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer) override;
-  void RemoveTaskObserver(
-      base::MessageLoop::TaskObserver* task_observer) override;
-  void Shutdown() override;
-
-  // SingleThreadIdleTaskRunner::Delegate:
-  void OnIdleTaskPosted() override;
-  base::TimeTicks WillProcessIdleTask() override;
-  void DidProcessIdleTask() override;
-
- private:
-  base::Thread* thread_;
-
-  DISALLOW_COPY_AND_ASSIGN(CompositorWorkerScheduler);
-};
-
-}  // namespace scheduler
-
-#endif  // COMPONENTS_SCHEDULER_CHILD_COMPOSITOR_WORKER_SCHEDULER_H_