Move blink scheduler implementation into a component

components/scheduler/child/scheduler_helper.h

Index: components/scheduler/child/scheduler_helper.h
diff --git a/content/child/scheduler/scheduler_helper.h b/components/scheduler/child/scheduler_helper.h
similarity index 93%
rename from content/child/scheduler/scheduler_helper.h
rename to components/scheduler/child/scheduler_helper.h
index 0e03aa95cd69e79266d4b9a4cd885134f9dcd3cf..7ace6944c42b3d8ab5d0403f4bdd28c2fb46f73d 100644
--- a/content/child/scheduler/scheduler_helper.h
+++ b/components/scheduler/child/scheduler_helper.h
@@ -2,24 +2,25 @@
 // 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();
@@ -209,6 +210,6 @@ class CONTENT_EXPORT SchedulerHelper {
   DISALLOW_COPY_AND_ASSIGN(SchedulerHelper);
 };
 
-}  // namespace content
+}  // namespace scheduler
 
-#endif  // CONTENT_CHILD_SCHEDULER_SCHEDULER_HELPER_H_
+#endif  // COMPONENTS_SCHEDULER_CHILD_SCHEDULER_HELPER_H_