Revert of Add a WorkerScheduler and a WebThreadImplForWorker

content/child/scheduler/scheduler_helper.cc

 // 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.
 
 #include "content/child/scheduler/scheduler_helper.h"
 
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "content/child/scheduler/nestable_single_thread_task_runner.h"
 #include "content/child/scheduler/prioritizing_task_queue_selector.h"
@@ skipping 172 matching lines @@
   TRACE_EVENT0(disabled_by_default_tracing_category_, "EnableLongIdlePeriod");
   CheckOnValidThread();
 
   // End any previous idle period.
   EndIdlePeriod();
 
   if (ShouldWaitForQuiescence()) {
     control_task_runner_->PostDelayedTask(
         FROM_HERE, enable_next_long_idle_period_closure_.callback(),
         required_quiescence_duration_before_long_idle_period_);
-    scheduler_helper_delegate_->IsNotQuiescent();
     return;
   }
 
   base::TimeTicks now(Now());
   base::TimeDelta next_long_idle_period_delay;
   IdlePeriodState new_idle_period_state =
       ComputeNewLongIdlePeriodState(now, &next_long_idle_period_delay);
   if (IsInIdlePeriod(new_idle_period_state)) {
     StartIdlePeriod(new_idle_period_state, now,
                     now + next_long_idle_period_delay,
@@ skipping 182 matching lines @@
 }
 
 void SchedulerHelper::RemoveTaskObserver(
     base::MessageLoop::TaskObserver* task_observer) {
   CheckOnValidThread();
   if (task_queue_manager_)
     task_queue_manager_->RemoveTaskObserver(task_observer);
 }
 
 }  // namespace content