Refactor preference syncing.

chrome/browser/custom_handlers/protocol_handler_registry.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/custom_handlers/protocol_handler_registry.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/custom_handlers/protocol_handler.h"
 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
@@ skipping 227 matching lines @@
     const ProtocolHandler& handler) {
 }
 
 void ProtocolHandlerRegistry::OnIgnoreRegisterProtocolHandler(
     const ProtocolHandler& handler) {
   IgnoreProtocolHandler(handler);
   Save();
 }
 
 void ProtocolHandlerRegistry::RegisterPrefs(PrefService* prefService) {
-  prefService->RegisterListPref(prefs::kRegisteredProtocolHandlers);
-  prefService->RegisterListPref(prefs::kIgnoredProtocolHandlers);
-  prefService->RegisterBooleanPref(prefs::kCustomHandlersEnabled, true);
+  prefService->RegisterListPref(prefs::kRegisteredProtocolHandlers,
+                                false /* don't sync pref */);
+  prefService->RegisterListPref(prefs::kIgnoredProtocolHandlers,
+                                false /* don't sync pref */);
+  prefService->RegisterBooleanPref(prefs::kCustomHandlersEnabled, true,
+                                   false /* don't sync pref */);
 }
 
 // Delegate --------------------------------------------------------------------
 
 ProtocolHandlerRegistry::Delegate::~Delegate() {
 }
 
 void ProtocolHandlerRegistry::Delegate::RegisterExternalHandler(
     const std::string& protocol) {
   ChildProcessSecurityPolicy* policy =
     ChildProcessSecurityPolicy::GetInstance();
   if (!policy->IsWebSafeScheme(protocol)) {
     policy->RegisterWebSafeScheme(protocol);
   }
   net::URLRequest::RegisterProtocolFactory(protocol,
       &ProtocolHandlerRegistry::Factory);
 }
 
 void ProtocolHandlerRegistry::Delegate::DeregisterExternalHandler(
     const std::string& protocol) {
   net::URLRequest::RegisterProtocolFactory(protocol, NULL);
 }
 
 bool ProtocolHandlerRegistry::Delegate::IsExternalHandlerRegistered(
     const std::string& protocol) {
   return net::URLRequest::IsHandledProtocol(protocol);
 }