Rename SchedulerWorkerThread* to SchedulerWorker*

base/task_scheduler/sequence.h

Index: base/task_scheduler/sequence.h
diff --git a/base/task_scheduler/sequence.h b/base/task_scheduler/sequence.h
index a2791d4f9fe68929933ebae637453f65de51fb04..3fa037fa35888ce8223b7f4976a50a7884651585 100644
--- a/base/task_scheduler/sequence.h
+++ b/base/task_scheduler/sequence.h
@@ -26,8 +26,8 @@ namespace internal {
 // Note: there is a known refcounted-ownership cycle in the Scheduler
 // architecture: Sequence -> Task -> TaskRunner -> Sequence -> ...
 // This is okay so long as the other owners of Sequence (PriorityQueue and
-// SchedulerWorkerThread in alternance and
-// SchedulerWorkerPoolImpl::SchedulerWorkerThreadDelegateImpl::GetWork()
+// SchedulerWorker in alternation and
+// SchedulerWorkerPoolImpl::SchedulerWorkerDelegateImpl::GetWork()
 // temporarily) keep running it (and taking Tasks from it as a result). A
 // dangling reference cycle would only occur should they release their reference
 // to it while it's not empty. In other words, it is only correct for them to