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

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 2472d45b7faf8eced8091f8205348530c80902b7..3e515c643aac98ca0c7961adaf1b042d21822d0a 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -125,12 +125,6 @@ Heap::Heap()
       nodes_copied_in_new_space_(0),
       nodes_promoted_(0),
       maximum_size_scavenges_(0),
-      max_gc_pause_(0.0),
-      total_gc_time_ms_(0.0),
-      max_alive_after_gc_(0),
-      min_in_mutator_(kMaxInt),
-      marking_time_(0.0),
-      sweeping_time_(0.0),
       last_idle_notification_time_(0.0),
       last_gc_time_(0.0),
       scavenge_collector_(nullptr),
@@ -5593,20 +5587,6 @@ void Heap::TearDown() {
 
   UpdateMaximumCommitted();
 
-  if (FLAG_print_cumulative_gc_stat) {
-    PrintF("\n");
-    PrintF("gc_count=%d ", gc_count_);
-    PrintF("mark_sweep_count=%d ", ms_count_);
-    PrintF("max_gc_pause=%.1f ", get_max_gc_pause());
-    PrintF("total_gc_time=%.1f ", total_gc_time_ms_);
-    PrintF("min_in_mutator=%.1f ", get_min_in_mutator());
-    PrintF("max_alive_after_gc=%" V8PRIdPTR " ", get_max_alive_after_gc());
-    PrintF("total_marking_time=%.1f ", tracer()->cumulative_marking_duration());
-    PrintF("total_sweeping_time=%.1f ",
-           tracer()->cumulative_sweeping_duration());
-    PrintF("\n\n");
-  }
-
   if (FLAG_print_max_heap_committed) {
     PrintF("\n");
     PrintF("maximum_committed_by_heap=%" V8PRIdPTR " ",
@@ -6375,20 +6355,10 @@ void Heap::TracePathToGlobal() {
 }
 #endif
 
-
-void Heap::UpdateCumulativeGCStatistics(double duration,
-                                        double spent_in_mutator,
-                                        double marking_time) {
-  if (FLAG_print_cumulative_gc_stat) {
-    total_gc_time_ms_ += duration;
-    max_gc_pause_ = Max(max_gc_pause_, duration);
-    max_alive_after_gc_ = Max(max_alive_after_gc_, SizeOfObjects());
-    min_in_mutator_ = Min(min_in_mutator_, spent_in_mutator);
-  } else if (FLAG_trace_gc_verbose) {
+void Heap::UpdateTotalGCTime(double duration) {
+  if (FLAG_trace_gc_verbose) {
     total_gc_time_ms_ += duration;
   }
-
-  marking_time_ += marking_time;
 }
 
 void Heap::ExternalStringTable::CleanUp() {