Remove a bunch of GetProfileSyncService callers to use the new factory.

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

Index: chrome/browser/ui/webui/options/stop_syncing_handler.cc
diff --git a/chrome/browser/ui/webui/options/stop_syncing_handler.cc b/chrome/browser/ui/webui/options/stop_syncing_handler.cc
index ad04a4521c3309b8e9dda623d5af1aed85fd3f07..b8747ce1e44e290ae8ec98514415c2b68bbf06dc 100644
--- a/chrome/browser/ui/webui/options/stop_syncing_handler.cc
+++ b/chrome/browser/ui/webui/options/stop_syncing_handler.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_ui.h"
 #include "grit/chromium_strings.h"
@@ -45,8 +46,8 @@ void StopSyncingHandler::RegisterMessages() {
 }
 
 void StopSyncingHandler::StopSyncing(const ListValue* args){
-  ProfileSyncService* service =
-      Profile::FromWebUI(web_ui())->GetProfileSyncService();
+  ProfileSyncService* service(ProfileSyncServiceFactory::
+      GetInstance()->GetForProfile(Profile::FromWebUI(web_ui())));
   if (service != NULL && ProfileSyncService::IsSyncEnabled()) {
     service->DisableForUser();
     ProfileSyncService::SyncEvent(ProfileSyncService::STOP_FROM_OPTIONS);