Fix chromium-os:10777 and other sync related crashes.

chrome/browser/dom_ui/options/stop_syncing_handler.cc

 // Copyright (c) 2010 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/dom_ui/options/stop_syncing_handler.h"
 
 #include "app/l10n_util.h"
 #include "base/basictypes.h"
 #include "base/values.h"
 #include "base/callback.h"
@@ skipping 21 matching lines @@
       l10n_util::GetStringUTF16(IDS_SYNC_STOP_SYNCING_CONFIRM_BUTTON_LABEL));
 }
 
 void StopSyncingHandler::RegisterMessages() {
   DCHECK(dom_ui_);
   dom_ui_->RegisterMessageCallback("stopSyncing",
       NewCallback(this, &StopSyncingHandler::StopSyncing));
 }
 
 void StopSyncingHandler::StopSyncing(const ListValue* args){
-  ProfileSyncService* service = dom_ui_->GetProfile()->GetProfileSyncService();
+  ProfileSyncService* service =
+      dom_ui_->GetOriginalProfile()->GetProfileSyncService();
   if (service != NULL && ProfileSyncService::IsSyncEnabled()) {
     service->DisableForUser();
     ProfileSyncService::SyncEvent(ProfileSyncService::STOP_FROM_OPTIONS);
   }
 }