Remove after wakeup logic and replace PumpTask with Fences

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 c1991af6ebc4491343b17c6bb4e2edf7a0e82317..5c29d3e5931f43c78583dba037cb0ceb0bc0061a 100644
--- a/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
+++ b/third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h
@@ -47,11 +47,6 @@ class BLINK_PLATFORM_EXPORT SchedulerHelper
   // task queues.
   scoped_refptr<TaskQueue> ControlTaskRunner();
 
-  // Returns the control task after wakeup runner.  Tasks posted to this runner
-  // are executed with the highest priority but do not cause the scheduler to
-  // wake up. Care must be taken to avoid starvation of other task queues.
-  scoped_refptr<TaskQueue> ControlAfterWakeUpTaskRunner();
-
   // Adds or removes a task observer from the scheduler. The observer will be
   // notified before and after every executed task. These functions can only be
   // called on the thread this class was created on.
@@ -116,7 +111,6 @@ class BLINK_PLATFORM_EXPORT SchedulerHelper
   scoped_refptr<SchedulerTqmDelegate> task_queue_manager_delegate_;
   std::unique_ptr<TaskQueueManager> task_queue_manager_;
   scoped_refptr<TaskQueue> control_task_runner_;
-  scoped_refptr<TaskQueue> control_after_wakeup_task_runner_;
   scoped_refptr<TaskQueue> default_task_runner_;
 
   Observer* observer_;  // NOT OWNED