[Password Manager Cleanup] Replaces NULL -> nullptr.

chrome/browser/password_manager/password_store_factory.cc

 // Copyright (c) 2012 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/password_manager/password_store_factory.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/prefs/pref_service.h"
@@ skipping 84 matching lines @@
   if (password_store_.get())
     password_store_->Shutdown();
 }
 
 // static
 scoped_refptr<PasswordStore> PasswordStoreFactory::GetForProfile(
     Profile* profile,
     ServiceAccessType sat) {
   if (sat == ServiceAccessType::IMPLICIT_ACCESS && profile->IsOffTheRecord()) {
     NOTREACHED() << "This profile is OffTheRecord";
-    return NULL;
+    return nullptr;
   }
 
   PasswordStoreFactory* factory = GetInstance();
   PasswordStoreService* service = static_cast<PasswordStoreService*>(
       factory->GetServiceForBrowserContext(profile, true));
   if (!service)
-    return NULL;
+    return nullptr;
   return service->GetPasswordStore();
 }
 
 // static
 PasswordStoreFactory* PasswordStoreFactory::GetInstance() {
   return Singleton<PasswordStoreFactory>::get();
 }
 
 PasswordStoreFactory::PasswordStoreFactory()
     : BrowserContextKeyedServiceFactory(
@@ skipping 141 matching lines @@
 #elif defined(USE_OZONE)
   ps = new password_manager::PasswordStoreDefault(
       main_thread_runner, db_thread_runner, login_db.Pass());
 #else
   NOTIMPLEMENTED();
 #endif
   if (!ps.get() ||
       !ps->Init(
           sync_start_util::GetFlareForSyncableService(profile->GetPath()))) {
     NOTREACHED() << "Could not initialize password manager.";
-    return NULL;
+    return nullptr;
   }
 
   return new PasswordStoreService(ps);
 }
 
 void PasswordStoreFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
 #if !defined(OS_CHROMEOS) && defined(USE_X11)
   // Notice that the preprocessor conditions above are exactly those that will
   // result in using PasswordStoreX in BuildServiceInstanceFor().
@@ skipping 72 matching lines @@
         break;
       case LIBSECRET:
         usage = OTHER_LIBSECRET;
         break;
     }
   }
   UMA_HISTOGRAM_ENUMERATION("PasswordManager.LinuxBackendStatistics", usage,
                             MAX_BACKEND_USAGE_VALUE);
 }
 #endif