Refactor preference syncing.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 2ffa29d50e2f3b7adb5c257abf7beb7df47e3e1f..9688d8a27dcd74ea1b201acecacd7da8ce06e9f9 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -844,7 +844,8 @@ void BrowserProcessImpl::CreateLocalState() {
 
   // Initialize the notification for the default browser setting policy.
   local_state_->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
-                                    false);
+                                    false,
+                                    false /* don't sync pref */);
   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled)) {
     if (local_state_->GetBoolean(prefs::kDefaultBrowserSettingEnabled))
       ShellIntegration::SetAsDefaultBrowser();
@@ -853,14 +854,18 @@ void BrowserProcessImpl::CreateLocalState() {
 
   // Initialize the preference for the plugin finder policy.
   // This preference is only needed on the IO thread so make it available there.
-  local_state_->RegisterBooleanPref(prefs::kDisablePluginFinder, false);
+  local_state_->RegisterBooleanPref(prefs::kDisablePluginFinder,
+                                    false,
+                                    false /* don't sync pref */);
   plugin_finder_disabled_pref_.Init(prefs::kDisablePluginFinder,
                                    local_state_.get(), NULL);
   plugin_finder_disabled_pref_.MoveToThread(BrowserThread::IO);
 
   // This is observed by ChildProcessSecurityPolicy, which lives in content/
   // though, so it can't register itself.
-  local_state_->RegisterListPref(prefs::kDisabledSchemes);
+  local_state_->RegisterListPref(prefs::kDisabledSchemes,
+                                 false /* don't sync pref */);
+
   pref_change_registrar_.Add(prefs::kDisabledSchemes, this);
   ApplyDisabledSchemesPolicy();
 }