Disable ProfileKeyedServices on import process by default.

chrome/browser/content_settings/cookie_settings.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/content_settings/cookie_settings.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
@@ skipping 58 matching lines @@
     PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(prefs::kBlockThirdPartyCookies,
                                 false,
                                 PrefRegistrySyncable::SYNCABLE_PREF);
 }
 
 bool CookieSettings::Factory::ServiceRedirectedInIncognito() const {
   return true;
 }
 
+bool CookieSettings::Factory::ServiceIsNULLOnImportProcess() const {
+  return false;
+}
+
 scoped_refptr<RefcountedProfileKeyedService>
 CookieSettings::Factory::BuildServiceInstanceFor(Profile* profile) const {
   return new CookieSettings(profile->GetHostContentSettingsMap(),
                             profile->GetPrefs());
 }
 
 CookieSettings::CookieSettings(
     HostContentSettingsMap* host_content_settings_map,
     PrefService* prefs)
     : host_content_settings_map_(host_content_settings_map),
@@ skipping 126 matching lines @@
 
   base::AutoLock auto_lock(lock_);
   block_third_party_cookies_ = pref_change_registrar_.prefs()->GetBoolean(
       prefs::kBlockThirdPartyCookies);
 }
 
 bool CookieSettings::ShouldBlockThirdPartyCookies() const {
   base::AutoLock auto_lock(lock_);
   return block_third_party_cookies_;
 }