134 FieldTrialList* FieldTrialList::global_ = NULL;  member in base::FieldTrialList
140   DCHECK(!global_);  in FieldTrialList()
142   global_ = this;  in FieldTrialList()
152   DCHECK(this == global_);  in ~FieldTrialList()
153   global_ = NULL;  in ~FieldTrialList()
158   if (!global_) {  in Register()
162   AutoLock auto_lock(global_->lock_);  in Register()
163   DCHECK(!global_->PreLockedFind(trial->name()));  in Register()
165   global_->registered_[trial->name()] = trial;  in Register()
170   if (!global_)  in Find()
172   AutoLock auto_lock(global_->lock_);  in Find()
173   return global_->PreLockedFind(name);  in Find()
194   if (!global_)  in StatesToString()
197   AutoLock auto_lock(global_->lock_);  in StatesToString()
198   for (RegistrationList::iterator it = global_->registered_.begin();  in StatesToString()
199        it != global_->registered_.end(); ++it) {  in StatesToString()
218   DCHECK(global_);  in CreateTrialsInChildProcess()
219   if (parent_trials.empty() || !global_)  in CreateTrialsInChildProcess()
260   if (!global_)  in GetFieldTrialCount()
262   AutoLock auto_lock(global_->lock_);  in GetFieldTrialCount()
263   return global_->registered_.size();  in GetFieldTrialCount()