Patch 1/3 to get WebScheduler via WebThread

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_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_
 #define CONTENT_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_
 
 #include "content/child/scheduler/task_queue_manager.h"
 #include "content/child/webthread_base.h"
 
 namespace base {
 class WaitableEvent;
 };
 
+namespace blink {
+class WebScheduler;
+};
+
 namespace content {
 
 class SingleThreadIdleTaskRunner;
+class WebSchedulerImpl;
 class WorkerScheduler;
 
 class CONTENT_EXPORT WebThreadImplForWorkerScheduler : public WebThreadBase {
  public:
   explicit WebThreadImplForWorkerScheduler(const char* name);
   virtual ~WebThreadImplForWorkerScheduler();
 
   // blink::WebThread implementation.
+  virtual blink::WebScheduler* scheduler() const;
   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_ptr<WebSchedulerImpl> web_scheduler_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SCHEDULER_WEBTHREAD_IMPL_FOR_WORKER_SCHEDULER_H_