Decrements FieldTrialList::constructor_count_ in the destructor. I'm...

base/field_trial.cc

 // Copyright (c) 2006-2008 The Chromium 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 "base/field_trial.h"
 #include "base/logging.h"
 #include "base/rand_util.h"
 
 using base::Time;
 
 //------------------------------------------------------------------------------
 // FieldTrialList methods and members.
 
 // static
 FieldTrialList* FieldTrialList::global_ = NULL;
 
-// static
-int FieldTrialList::constructor_count_ = 0;
-
 FieldTrialList::FieldTrialList()
   : application_start_time_(Time::Now()) {
-  DCHECK(!constructor_count_);
-  ++constructor_count_;
+  DCHECK(!global_);
   global_ = this;
 }
 
 FieldTrialList::~FieldTrialList() {
   while (!registered_.empty()) {
     RegistrationList::iterator it = registered_.begin();
     it->second->Release();
     registered_.erase(it->first);
   }
   DCHECK(this == global_);
@@ skipping 20 matching lines @@
 //------------------------------------------------------------------------------
 // FieldTrial methods and members.
 
 FieldTrial::FieldTrial(const std::wstring& name, double probability)
   : name_(name) {
   double rand = base::RandDouble();
   DCHECK(rand >= 0.0  && rand < 1.0);
   boolean_value_ = rand < probability;
   FieldTrialList::Register(this);
 }