Reduce the number of delayed tasks on chromium run loop

components/scheduler/base/virtual_time_domain.h

Index: components/scheduler/base/virtual_time_domain.h
diff --git a/components/scheduler/base/virtual_time_domain.h b/components/scheduler/base/virtual_time_domain.h
index 2e384144d4c20918ca08cb3ffeb1c4bc6a080389..ce1f99aac1b1896b5861718ff39ccb3697008c37 100644
--- a/components/scheduler/base/virtual_time_domain.h
+++ b/components/scheduler/base/virtual_time_domain.h
@@ -27,7 +27,10 @@ class SCHEDULER_EXPORT VirtualTimeDomain : public TimeDomain {
   void AdvanceTo(base::TimeTicks now);
 
  protected:
-  void RequestWakeup(base::TimeDelta delay) override;
+  void OnRegisterWithTaskQueueManager(
+      TaskQueueManagerDelegate* task_queue_manager_delegate,
+      base::Closure do_work_closure) override;
+  void RequestWakeup(LazyNow* lazy_now, base::TimeDelta delay) override;
   void AsValueIntoInternal(
       base::trace_event::TracedValue* state) const override;
 
@@ -35,6 +38,9 @@ class SCHEDULER_EXPORT VirtualTimeDomain : public TimeDomain {
   mutable base::Lock lock_;  // Protects |now_|.
   base::TimeTicks now_;
 
+  TaskQueueManagerDelegate* task_queue_manager_delegate_;  // NOT OWNED
+  base::Closure do_work_closure_;
+
   ~VirtualTimeDomain() override;
 
   DISALLOW_COPY_AND_ASSIGN(VirtualTimeDomain);