Move blink scheduler implementation into a component

components/scheduler/child/single_thread_idle_task_runner.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_CHILD_SCHEDULER_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
-#define CONTENT_CHILD_SCHEDULER_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
+#ifndef COMPONENTS_SCHEDULER_CHILD_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
+#define COMPONENTS_SCHEDULER_CHILD_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
 
-namespace content {
+namespace scheduler {
 
 // A SingleThreadIdleTaskRunner is a task runner for running idle tasks. Idle
 // tasks have an unbound argument which is bound to a deadline
 // (in base::TimeTicks) when they are run. The idle task is expected to
 // complete by this deadline.
 class SingleThreadIdleTaskRunner
     : public base::RefCountedThreadSafe<SingleThreadIdleTaskRunner> {
  public:
   typedef base::Callback<void(base::TimeTicks)> IdleTask;
 
@@ skipping 28 matching lines @@
 
   scoped_refptr<base::SingleThreadTaskRunner> idle_priority_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> after_wakeup_task_runner_;
   base::Callback<void(base::TimeTicks*)> deadline_supplier_;
   const char* tracing_category_;
   base::WeakPtr<SingleThreadIdleTaskRunner> weak_scheduler_ptr_;
   base::WeakPtrFactory<SingleThreadIdleTaskRunner> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(SingleThreadIdleTaskRunner);
 };
 
-}  // namespace content
+}  // namespace scheduler
 
-#endif  // CONTENT_CHILD_SCHEDULER_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
+#endif  // COMPONENTS_SCHEDULER_CHILD_SINGLE_THREAD_IDLE_TASK_RUNNER_H_