Introduce a SchedulerHelper in content/child/scheduler

content/renderer/scheduler/renderer_scheduler.h

 // Copyright 2014 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_RENDERER_SCHEDULER_H_
 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
 
-#include "content/renderer/scheduler/single_thread_idle_task_runner.h"
-#include "content/renderer/scheduler/task_queue_manager.h"
+#include "base/message_loop/message_loop.h"
+#include "content/child/scheduler/single_thread_idle_task_runner.h"
+#include "content/common/content_export.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 
 namespace cc {
 struct BeginFrameArgs;
 }
 
 namespace content {
 
 class CONTENT_EXPORT RendererScheduler {
  public:
@@ skipping 74 matching lines @@
   virtual void Shutdown() = 0;
 
  protected:
   RendererScheduler();
   DISALLOW_COPY_AND_ASSIGN(RendererScheduler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_