TaskScheduler: Always remove SchedulerWorker from idle stack on wake up.

base/task_scheduler/scheduler_worker_pool_impl.cc

Index: base/task_scheduler/scheduler_worker_pool_impl.cc
diff --git a/base/task_scheduler/scheduler_worker_pool_impl.cc b/base/task_scheduler/scheduler_worker_pool_impl.cc
index e804bbd779ab06f3dd5070d2fcfa9d2fb3103fc0..d0c5dd2a97dedf0522820a2494e61389c0a19536 100644
--- a/base/task_scheduler/scheduler_worker_pool_impl.cc
+++ b/base/task_scheduler/scheduler_worker_pool_impl.cc
@@ -435,7 +435,7 @@ void SchedulerWorkerPoolImpl::PostTaskWithSequenceNow(
 
     // Wake up a worker to process |sequence|.
     if (worker)
-      worker->WakeUp();
+      WakeUpWorker(worker);
     else
       WakeUpOneWorker();
   }
@@ -720,6 +720,12 @@ bool SchedulerWorkerPoolImpl::Initialize(
   return !workers_.empty();
 }
 
+void SchedulerWorkerPoolImpl::WakeUpWorker(SchedulerWorker* worker) {
+  DCHECK(worker);
+  RemoveFromIdleWorkersStack(worker);
+  worker->WakeUp();
+}
+
 void SchedulerWorkerPoolImpl::WakeUpOneWorker() {
   SchedulerWorker* worker;
   {