Refactor preference syncing.

chrome/browser/upgrade_detector.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/upgrade_detector.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 134 matching lines @@
 
  private:
   Task* upgrade_detected_task_;
   bool* is_unstable_channel_;
 };
 
 }  // namespace
 
 // static
 void UpgradeDetector::RegisterPrefs(PrefService* prefs) {
-  prefs->RegisterBooleanPref(prefs::kRestartLastSessionOnShutdown, false);
+  prefs->RegisterBooleanPref(prefs::kRestartLastSessionOnShutdown,
+                             false,
+                             false /* don't sync pref */);
 }
 
 UpgradeDetector::UpgradeDetector()
     : ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)),
       is_unstable_channel_(false),
       upgrade_notification_stage_(UPGRADE_ANNOYANCE_NONE),
       notify_upgrade_(false) {
   CommandLine command_line(*CommandLine::ForCurrentProcess());
   if (command_line.HasSwitch(switches::kDisableBackgroundNetworking))
     return;
@@ skipping 91 matching lines @@
     upgrade_notification_timer_.Stop();
   }
 
   notify_upgrade_ = true;
 
   NotificationService::current()->Notify(
       NotificationType::UPGRADE_RECOMMENDED,
       Source<UpgradeDetector>(this),
       NotificationService::NoDetails());
 }