Move blink scheduler implementation into a component

components/scheduler/child/scheduler_helper.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_SCHEDULER_HELPER_H_
-#define CONTENT_CHILD_SCHEDULER_SCHEDULER_HELPER_H_
+#ifndef COMPONENTS_SCHEDULER_CHILD_SCHEDULER_HELPER_H_
+#define COMPONENTS_SCHEDULER_CHILD_SCHEDULER_HELPER_H_
 
-#include "content/child/scheduler/cancelable_closure_holder.h"
-#include "content/child/scheduler/single_thread_idle_task_runner.h"
-#include "content/child/scheduler/task_queue_manager.h"
-#include "content/child/scheduler/time_source.h"
+#include "components/scheduler/child/cancelable_closure_holder.h"
+#include "components/scheduler/child/single_thread_idle_task_runner.h"
+#include "components/scheduler/child/task_queue_manager.h"
+#include "components/scheduler/child/time_source.h"
+#include "components/scheduler/scheduler_export.h"
 
-namespace content {
+namespace scheduler {
 
 class PrioritizingTaskQueueSelector;
 class NestableSingleThreadTaskRunner;
 
 // Common scheduler functionality for Default and Idle tasks.
-class CONTENT_EXPORT SchedulerHelper {
+class SCHEDULER_EXPORT SchedulerHelper {
  public:
   // Used to by scheduler implementations to customize idle behaviour.
-  class CONTENT_EXPORT SchedulerHelperDelegate {
+  class SCHEDULER_EXPORT SchedulerHelperDelegate {
    public:
     SchedulerHelperDelegate();
     virtual ~SchedulerHelperDelegate();
 
     // If it's ok to enter a Long Idle period, return true.  Otherwise return
     // false and set next_long_idle_period_delay_out so we know when to try
     // again.
     virtual bool CanEnterLongIdlePeriod(
         base::TimeTicks now,
         base::TimeDelta* next_long_idle_period_delay_out) = 0;
@@ skipping 169 matching lines @@
   const char* tracing_category_;
   const char* disabled_by_default_tracing_category_;
   const char* idle_period_tracing_name_;
 
   base::WeakPtr<SchedulerHelper> weak_scheduler_ptr_;
   base::WeakPtrFactory<SchedulerHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SchedulerHelper);
 };
 
-}  // namespace content
+}  // namespace scheduler
 
-#endif  // CONTENT_CHILD_SCHEDULER_SCHEDULER_HELPER_H_
+#endif  // COMPONENTS_SCHEDULER_CHILD_SCHEDULER_HELPER_H_