Decouple the browsing data counters initialization and start.

chrome/browser/browsing_data/passwords_counter.cc

 // Copyright (c) 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/browsing_data/passwords_counter.h"
 #include "chrome/browser/password_manager/password_store_factory.h"
 #include "chrome/common/pref_names.h"
 #include "components/password_manager/core/browser/password_store.h"
 
 PasswordsCounter::PasswordsCounter() : pref_name_(prefs::kDeletePasswords) {}
@@ skipping 36 matching lines @@
   ReportResult(std::count_if(
       results.begin(),
       results.end(),
       [start](const autofill::PasswordForm* form) {
         return form->date_created >= start;
       }));
 }
 
 void PasswordsCounter::OnLoginsChanged(
     const password_manager::PasswordStoreChangeList& changes) {
-  RestartCounting();
+  Restart();
 }