Refactor preference syncing.

chrome/browser/safe_browsing/safe_browsing_service.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/safe_browsing/safe_browsing_service.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/path_service.h"
@@ skipping 465 matching lines @@
 
 void SafeBrowsingService::OnEnable(bool enabled) {
   if (enabled)
     Start();
   else
     ShutDown();
 }
 
 // static
 void SafeBrowsingService::RegisterPrefs(PrefService* prefs) {
-  prefs->RegisterStringPref(prefs::kSafeBrowsingClientKey, "");
-  prefs->RegisterStringPref(prefs::kSafeBrowsingWrappedKey, "");
+  prefs->RegisterStringPref(prefs::kSafeBrowsingClientKey,
+                            "",
+                            false /* don't sync pref */);
+  prefs->RegisterStringPref(prefs::kSafeBrowsingWrappedKey,
+                            "",
+                            false /* don't sync pref */);
 }
 
 void SafeBrowsingService::CloseDatabase() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Cases to avoid:
   //  * If |closing_database_| is true, continuing will queue up a second
   //    request, |closing_database_| will be reset after handling the first
   //    request, and if any functions on the db thread recreate the database, we
   //    could start using it on the IO thread and then have the second request
@@ skipping 688 matching lines @@
   check->is_download = true;
   check->timeout_task =
       NewRunnableMethod(this, &SafeBrowsingService::TimeoutCallback, check);
   checks_.insert(check);
 
   safe_browsing_thread_->message_loop()->PostTask(FROM_HERE, task);
 
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE, check->timeout_task, timeout_ms);
 }