Remove PrefService::ScheduleSavePersistentPrefs and SavePersistentPrefs.

chrome/browser/extensions/apps_promo.cc

 // Copyright (c) 2011 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/extensions/apps_promo.h"
 
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 294 matching lines @@
 void AppsPromo::SetLastPromoId(const std::string& id) {
   prefs_->SetString(prefs::kNTPWebStorePromoLastId, id);
 }
 
 int AppsPromo::GetPromoCounter() const {
   return prefs_->GetInteger(prefs::kAppsPromoCounter);
 }
 
 void AppsPromo::SetPromoCounter(int val) {
   prefs_->SetInteger(prefs::kAppsPromoCounter, val);
-  prefs_->ScheduleSavePersistentPrefs();
 }
 
 bool AppsPromo::GetDefaultAppsInstalled() const {
   return prefs_->GetBoolean(prefs::kDefaultAppsInstalled);
 }
 
 AppsPromo::UserGroup AppsPromo::GetCurrentUserGroup() const {
   const PrefService::Preference* last_promo_id
       = prefs_->FindPreference(prefs::kNTPWebStorePromoLastId);
   CHECK(last_promo_id);
@@ skipping 65 matching lines @@
   NotificationService::current()->Notify(
       chrome::NOTIFICATION_WEB_STORE_PROMO_LOADED,
       Source<Profile>(profile_),
       NotificationService::NoDetails());
 }
 
 bool AppsPromoLogoFetcher::SupportsLogoURL() {
   URLPattern allowed_urls(URLPattern::SCHEME_HTTPS, kValidLogoPattern);
   return allowed_urls.MatchesURL(promo_data_.logo);
 }