Introduce a SchedulerHelper in content/child/scheduler

content/renderer/scheduler/deadline_task_runner.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_DEADLINE_TASK_RUNNER_H_
 #define CONTENT_RENDERER_SCHEDULER_DEADLINE_TASK_RUNNER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
+#include "content/child/scheduler/cancelable_closure_holder.h"
 #include "content/common/content_export.h"
-#include "content/renderer/scheduler/cancelable_closure_holder.h"
 
 namespace content {
 
 // Runs a posted task at latest by a given deadline, but possibly sooner.
 class CONTENT_EXPORT DeadlineTaskRunner {
  public:
   DeadlineTaskRunner(const base::Closure& callback,
                      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
   ~DeadlineTaskRunner();
@@ skipping 16 matching lines @@
   base::Closure callback_;
   base::TimeTicks deadline_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(DeadlineTaskRunner);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_DEADLINE_TASK_RUNNER_H_