Replace profile statistics preference count with AutofillCounter

chrome/browser/profiles/profile_statistics.cc

Index: chrome/browser/profiles/profile_statistics.cc
diff --git a/chrome/browser/profiles/profile_statistics.cc b/chrome/browser/profiles/profile_statistics.cc
index 284b34d41681270db9801545ec3a0c10b9c2d71e..d73328cff08228744788e01b4e996458dd61acb6 100644
--- a/chrome/browser/profiles/profile_statistics.cc
+++ b/chrome/browser/profiles/profile_statistics.cc
@@ -8,8 +8,6 @@
 #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"
 
@@ -28,7 +26,7 @@ void ProfileStatistics::GatherStatistics(
   DCHECK(!profile_->IsOffTheRecord() && !profile_->IsSystemProfile());
 
   if (!aggregator_) {
-    aggregator_ = new ProfileStatisticsAggregator(
+    aggregator_ = base::MakeUnique<ProfileStatisticsAggregator>(
         profile_, base::Bind(&ProfileStatistics::DeregisterAggregator,
                              weak_ptr_factory_.GetWeakPtr()));
   }