Allow expensive task blocking if there is pending iframe navigation

components/scheduler/renderer/renderer_scheduler_impl.h

Index: components/scheduler/renderer/renderer_scheduler_impl.h
diff --git a/components/scheduler/renderer/renderer_scheduler_impl.h b/components/scheduler/renderer/renderer_scheduler_impl.h
index 5e7f25323321c65a57b29a600e969057973f458e..a88a6d3a56dfb24bcd18b0b36a2a85e3bdb49ada 100644
--- a/components/scheduler/renderer/renderer_scheduler_impl.h
+++ b/components/scheduler/renderer/renderer_scheduler_impl.h
@@ -63,8 +63,8 @@ class SCHEDULER_EXPORT RendererSchedulerImpl
   void DidAnimateForInputOnCompositorThread() override;
   void OnRendererBackgrounded() override;
   void OnRendererForegrounded() override;
-  void AddPendingNavigation() override;
-  void RemovePendingNavigation() override;
+  void AddPendingNavigation(bool main_frame_navigating) override;
+  void RemovePendingNavigation(bool main_frame_navigating) override;
   void OnNavigationStarted() override;
   bool IsHighPriorityWorkAnticipated() override;
   bool ShouldYieldForHighPriorityWork() override;