Replace profile statistics preference count with AutofillCounter

chrome/browser/profiles/profile_statistics.cc

 // Copyright 2015 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 "chrome/browser/profiles/profile_statistics.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_attributes_entry.h"
-#include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_statistics_aggregator.h"
 
 ProfileStatistics::ProfileStatistics(Profile* profile)
     : profile_(profile), aggregator_(nullptr), weak_ptr_factory_(this) {
 }
 
 ProfileStatistics::~ProfileStatistics() {
 }
 
 void ProfileStatistics::GatherStatistics(
     const profiles::ProfileStatisticsCallback& callback) {
   // IsValidProfile() can be false in unit tests.
   if (!g_browser_process->profile_manager()->IsValidProfile(profile_))
     return;
   DCHECK(!profile_->IsOffTheRecord() && !profile_->IsSystemProfile());
 
   if (!aggregator_) {
-    aggregator_ = new ProfileStatisticsAggregator(
+    aggregator_ = base::MakeUnique<ProfileStatisticsAggregator>(
         profile_, base::Bind(&ProfileStatistics::DeregisterAggregator,
                              weak_ptr_factory_.GetWeakPtr()));
   }
   aggregator_->AddCallbackAndStartAggregator(callback);
 }
 
 void ProfileStatistics::DeregisterAggregator() {
   aggregator_ = nullptr;
 }