Moved BrowsingDataCounter and part of BrowsingDataCounterUtils to components.

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/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/password_manager/core/browser/password_store.h"
 
-PasswordsCounter::PasswordsCounter() : pref_name_(prefs::kDeletePasswords) {}
+PasswordsCounter::PasswordsCounter(Profile* profile)
+    : BrowsingDataCounter(prefs::kDeletePasswords), profile_(profile) {}
 
 PasswordsCounter::~PasswordsCounter() {
-  if (store_)
-    store_->RemoveObserver(this);
+  store_->RemoveObserver(this);
 }
 
 void PasswordsCounter::OnInitialized() {
   store_ = PasswordStoreFactory::GetForProfile(
-      GetProfile(), ServiceAccessType::EXPLICIT_ACCESS).get();
-  if (store_)
-    store_->AddObserver(this);
-  else
-    LOG(ERROR) << "No password store! Cannot count passwords.";
-}
-
-const std::string& PasswordsCounter::GetPrefName() const {
-  return pref_name_;
+      profile_, ServiceAccessType::EXPLICIT_ACCESS);
+  DCHECK(store_);
+  store_->AddObserver(this);
 }
 
 void PasswordsCounter::Count() {
-  if (!store_) {
-    ReportResult(0);
-    return;
-  }
-
   cancelable_task_tracker()->TryCancelAll();
   // TODO(msramek): We don't actually need the logins themselves, just their
   // count. Consider implementing |PasswordStore::CountAutofillableLogins|.
   // This custom request should also allow us to specify the time range, so that
   // we can use it to filter the login creation date in the database.
   store_->GetAutofillableLogins(this);
 }
 
 void PasswordsCounter::OnGetPasswordStoreResults(
     ScopedVector<autofill::PasswordForm> results) {
   base::Time start = GetPeriodStart();
   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) {
   Restart();
 }