Fix TimeDomain::MigrateQueue with incoming immediate tasks

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 5c0ba692b66f0ee9c98d1d1e7b628a11235c9ab5..506f02dbcbbf08f54af8b7458e2d09f58b7df5a6 100644
--- a/components/scheduler/base/time_domain.h
+++ b/components/scheduler/base/time_domain.h
@@ -89,8 +89,8 @@ class SCHEDULER_EXPORT TimeDomain {
   void RegisterQueue(internal::TaskQueueImpl* queue);
 
   // Removes |queue| from the set of task queues that UpdateWorkQueues calls
-  // UpdateWorkQueue on.
-  void UnregisterAsUpdatableTaskQueue(internal::TaskQueueImpl* queue);
+  // UpdateWorkQueue on. Returns true if |queue| was updatable.
+  bool UnregisterAsUpdatableTaskQueue(internal::TaskQueueImpl* queue);
 
   // Removes |queue| from all internal data structures.
   void UnregisterQueue(internal::TaskQueueImpl* queue);