Move StatsTable into the Counters class.

src/isolate.cc

 // 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.
 
 #include "src/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 2522 matching lines @@
   descriptor_lookup_cache_ = NULL;
   delete context_slot_cache_;
   context_slot_cache_ = NULL;
 
   delete load_stub_cache_;
   load_stub_cache_ = NULL;
   delete store_stub_cache_;
   store_stub_cache_ = NULL;
   delete code_aging_helper_;
   code_aging_helper_ = NULL;
-  delete stats_table_;
   stats_table_ = NULL;
 
   delete materialized_object_store_;
   materialized_object_store_ = NULL;
 
   delete logger_;
   logger_ = NULL;
 
   counters_ = NULL;
 
@@ skipping 283 matching lines @@
 
   if (!FLAG_inline_new) heap_.DisableInlineAllocation();
 
   return true;
 }
 
 
 // Initialized lazily to allow early
 // v8::V8::SetAddHistogramSampleFunction calls.
 StatsTable* Isolate::stats_table() {
-  if (stats_table_ == NULL) {
-    stats_table_ = new StatsTable;
-  }
-  return stats_table_;
+  if (stats_table_ != nullptr) return stats_table_;
+  InitializeCounters();
+  return stats_table_ = counters_->stats_table();
 }
 
 
 void Isolate::Enter() {
   Isolate* current_isolate = NULL;
   PerIsolateThreadData* current_data = CurrentPerIsolateThreadData();
   if (current_data != NULL) {
     current_isolate = current_data->isolate_;
     DCHECK(current_isolate != NULL);
     if (current_isolate == this) {
@@ skipping 907 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8