[heap] Remove --print-cumulative-gc-stat flag.

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 1790 matching lines @@
   void ProcessWeakListRoots(WeakObjectRetainer* retainer);
 
   // ===========================================================================
   // GC statistics. ============================================================
   // ===========================================================================
 
   inline intptr_t OldGenerationSpaceAvailable() {
     return old_generation_allocation_limit_ - PromotedTotalSize();
   }
 
-  // Returns maximum GC pause.
-  double get_max_gc_pause() { return max_gc_pause_; }
-
-  // Returns maximum size of objects alive after GC.
-  intptr_t get_max_alive_after_gc() { return max_alive_after_gc_; }
-
-  // Returns minimal interval between two subsequent collections.
-  double get_min_in_mutator() { return min_in_mutator_; }
-
-  // Update GC statistics that are tracked on the Heap.
-  void UpdateCumulativeGCStatistics(double duration, double spent_in_mutator,
-                                    double marking_time);
+  void UpdateTotalGCTime(double duration);
 
   bool MaximumSizeScavenge() { return maximum_size_scavenges_ > 0; }
 
   // ===========================================================================
   // Growing strategy. =========================================================
   // ===========================================================================
 
   // Decrease the allocation limit if the new limit based on the given
   // parameters is lower than the current limit.
   void DampenOldGenerationAllocationLimit(intptr_t old_gen_size,
@@ skipping 373 matching lines @@
   int nodes_died_in_new_space_;
   int nodes_copied_in_new_space_;
   int nodes_promoted_;
 
   // This is the pretenuring trigger for allocation sites that are in maybe
   // tenure state. When we switched to the maximum new space size we deoptimize
   // the code that belongs to the allocation site and derive the lifetime
   // of the allocation site.
   unsigned int maximum_size_scavenges_;
 
-  // Maximum GC pause.
-  double max_gc_pause_;
-
   // Total time spent in GC.
   double total_gc_time_ms_;
 
-  // Maximum size of objects alive after GC.
-  intptr_t max_alive_after_gc_;
-
-  // Minimal interval between two subsequent collections.
-  double min_in_mutator_;
-
-  // Cumulative GC time spent in marking.
-  double marking_time_;
-
-  // Cumulative GC time spent in sweeping.
-  double sweeping_time_;
-
   // Last time an idle notification happened.
   double last_idle_notification_time_;
 
   // Last time a garbage collection happened.
   double last_gc_time_;
 
   Scavenger* scavenge_collector_;
 
   MarkCompactCollector* mark_compact_collector_;
 
@@ skipping 397 matching lines @@
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_