Revert of Revert of Add a WorkerScheduler and a WebThreadImplForWorker

content/child/scheduler/scheduler_helper.cc

Index: content/child/scheduler/scheduler_helper.cc
diff --git a/content/child/scheduler/scheduler_helper.cc b/content/child/scheduler/scheduler_helper.cc
index 77fb9fbbf964e6433b52dab536a0130964665e38..16b4432b1754535491c17898702b59bd4e754711 100644
--- a/content/child/scheduler/scheduler_helper.cc
+++ b/content/child/scheduler/scheduler_helper.cc
@@ -190,6 +190,7 @@
     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;
   }