Revert of Scheduler refactoring to virtually elimate redundant DoWorks

third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h

Index: third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
diff --git a/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h b/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
index 67f978b4964e1025e4bc09978245545b65698b44..220ab7a8a29d68c349de8a997fb094ad5989ddd2 100644
--- a/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
+++ b/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
@@ -28,17 +28,7 @@
       const char* tracing_category,
       const char* disabled_by_default_tracing_category,
       const char* disabled_by_default_verbose_tracing_category);
-  SchedulerHelper(
-      scoped_refptr<SchedulerTqmDelegate> task_queue_manager_delegate,
-      const char* tracing_category,
-      const char* disabled_by_default_tracing_category,
-      const char* disabled_by_default_verbose_tracing_category,
-      TaskQueue::Spec default_task_queue_spec);
   ~SchedulerHelper() override;
-
-  // There is a small overhead to recording task delay histograms, we may not
-  // wish to do this on all threads.
-  void SetRecordTaskDelayHistograms(bool record_task_delay_histograms);
 
   // TaskQueueManager::Observer implementation:
   void OnUnregisterTaskQueue(const scoped_refptr<TaskQueue>& queue) override;