Add a WorkerScheduler and a WebThreadImplForWorker

content/child/scheduler/webthread_impl_for_worker_scheduler.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 CONTENT_RENDERER_SCHEDULER_WEBTHREAD_IMPL_FOR_SCHEDULER_H_
-#define CONTENT_RENDERER_SCHEDULER_WEBTHREAD_IMPL_FOR_SCHEDULER_H_
+#ifndef CONTENT_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_
+#define CONTENT_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_
 
-#include "content/child/webthread_impl.h"
+#include "content/child/scheduler/task_queue_manager.h"
+#include "content/child/webthread_base.h"
 
-#include "base/containers/scoped_ptr_hash_map.h"
+namespace base {
+class WaitableEvent;
+};
 
 namespace content {
 
-class RendererScheduler;
+class SingleThreadIdleTaskRunner;
+class WorkerScheduler;
 
-class CONTENT_EXPORT WebThreadImplForScheduler : public WebThreadBase {
+class CONTENT_EXPORT WebThreadImplForWorkerScheduler : public WebThreadBase {
  public:
-  explicit WebThreadImplForScheduler(RendererScheduler* scheduler);
-  virtual ~WebThreadImplForScheduler();
+  explicit WebThreadImplForWorkerScheduler(const char* name);
+  virtual ~WebThreadImplForWorkerScheduler();
 
   // blink::WebThread implementation.
   blink::PlatformThreadId threadId() const override;
 
   // WebThreadBase implementation.
   base::SingleThreadTaskRunner* TaskRunner() const override;
+  SingleThreadIdleTaskRunner* IdleTaskRunner() const override;
 
  private:
   base::MessageLoop* MessageLoop() const override;
   void AddTaskObserverInternal(
       base::MessageLoop::TaskObserver* observer) override;
   void RemoveTaskObserverInternal(
       base::MessageLoop::TaskObserver* observer) override;
 
+  void InitOnThread(base::WaitableEvent* completion);
+  void ShutDownOnThread(base::WaitableEvent* completion);
+
+  scoped_ptr<base::Thread> thread_;
+  scoped_ptr<WorkerScheduler> worker_scheduler_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-  RendererScheduler* scheduler_;  // Not owned.
-  blink::PlatformThreadId thread_id_;
+  scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner_;
 };
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_SCHEDULER_WEBTHREAD_IMPL_FOR_SCHEDULER_H_
+#endif  // CONTENT_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_