Remove PrefService::ScheduleSavePersistentPrefs and SavePersistentPrefs.

chrome/browser/ui/webui/options/core_options_handler.cc

Index: chrome/browser/ui/webui/options/core_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/core_options_handler.cc b/chrome/browser/ui/webui/options/core_options_handler.cc
index c3ff60712955db540ef2d967009b76f7f8cae130..bceaa5f8244bc587c36d55ca838d04f78c123e9f 100644
--- a/chrome/browser/ui/webui/options/core_options_handler.cc
+++ b/chrome/browser/ui/webui/options/core_options_handler.cc
@@ -208,8 +208,6 @@ void CoreOptionsHandler::SetPref(const std::string& pref_name,
       return;
   }
 
-  pref_service->ScheduleSavePersistentPrefs();
-
   ProcessUserMetric(value, metric);
 }
 
@@ -217,7 +215,6 @@ void CoreOptionsHandler::ClearPref(const std::string& pref_name,
                                    const std::string& metric) {
   PrefService* pref_service = Profile::FromWebUI(web_ui_)->GetPrefs();
   pref_service->ClearPref(pref_name.c_str());
-  pref_service->ScheduleSavePersistentPrefs();
 
   if (!metric.empty())
     content::RecordComputedAction(metric);