Remove PrefService::ScheduleSavePersistentPrefs and SavePersistentPrefs.

chrome/browser/extensions/default_apps.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/default_apps.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/first_run/first_run.h"
@@ skipping 84 matching lines @@
   // manager is smart enough to know not to reinstall the apps on all
   // subsequent runs of chrome.
   if (state == default_apps::kUnknown) {
     if (install_apps) {
       profile->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
                                       default_apps::kAlwaysProvideDefaultApps);
     } else {
       profile->GetPrefs()->SetInteger(prefs::kDefaultAppsInstallState,
                                       default_apps::kNeverProvideDefaultApps);
     }
-    profile->GetPrefs()->ScheduleSavePersistentPrefs();
   }
 
   return install_apps;
 }
 
 namespace default_apps {
 
 void RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterIntegerPref(prefs::kDefaultAppsInstallState, kUnknown,
                              PrefService::UNSYNCABLE_PREF);
@@ skipping 16 matching lines @@
   if (!profile_ || !ShouldInstallInProfile(profile_)) {
     base::DictionaryValue* prefs = new base::DictionaryValue;
     SetPrefs(prefs);
     return;
   }
 
   ExternalExtensionProviderImpl::VisitRegisteredExtension();
 }
 
 }  // namespace default_apps