Remove registered_task_queues_ and associated DCHECKS from TimeDomain

components/scheduler/base/time_domain.h

Index: components/scheduler/base/time_domain.h
diff --git a/components/scheduler/base/time_domain.h b/components/scheduler/base/time_domain.h
index fa2e1de8c12a5fbf0245516bda96828d606229f6..3938891e8988ed3d96042b5ac1c10805a958c2ee 100644
--- a/components/scheduler/base/time_domain.h
+++ b/components/scheduler/base/time_domain.h
@@ -151,10 +151,6 @@ class SCHEDULER_EXPORT TimeDomain {
   // only be accessed from the main thread.
   std::set<internal::TaskQueueImpl*> updatable_queue_set_;
 
-#if DCHECK_IS_ON()
-  std::set<internal::TaskQueueImpl*> registered_task_queues_;
-#endif
-
   Observer* observer_;  // NOT OWNED.
 
   base::ThreadChecker main_thread_checker_;