Sample allocation throughput in all idle notifications.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 8a8bb3fa807c028abe067da496592db28fbf7ba2..2782ed85acad721a01ff1a57c427b253f5d88312 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -2154,13 +2154,11 @@ class Heap {
 
   bool PerformIdleTimeAction(GCIdleTimeAction action,
                              GCIdleTimeHandler::HeapState heap_state,
-                             double deadline_in_ms,
-                             bool is_long_idle_notification);
+                             double deadline_in_ms);
 
   void IdleNotificationEpilogue(GCIdleTimeAction action,
                                 GCIdleTimeHandler::HeapState heap_state,
-                                double start_ms, double deadline_in_ms,
-                                bool is_long_idle_notification);
+                                double start_ms, double deadline_in_ms);
 
   void ClearObjectStats(bool clear_last_time_stats = false);
 
@@ -2211,8 +2209,6 @@ class Heap {
 
   GCIdleTimeHandler gc_idle_time_handler_;
 
-  unsigned int gc_count_at_last_idle_gc_;
-
   // These two counters are monotomically increasing and never reset.
   size_t full_codegen_bytes_generated_;
   size_t crankshaft_codegen_bytes_generated_;