Add RetainedRef uses where needed.

chrome/browser/safe_browsing/safe_browsing_service.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include <vector>
 
@@ skipping 564 matching lines @@
     ping_manager_ = NULL;
   }
 }
 
 void SafeBrowsingService::Start() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SafeBrowsingService::StartOnIOThread, this,
-                 url_request_context_getter_));
+                 base::RetainedRef(url_request_context_getter_)));
 }
 
 void SafeBrowsingService::Stop(bool shutdown) {
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SafeBrowsingService::StopOnIOThread, this, shutdown));
 }
 
 void SafeBrowsingService::Observe(int type,
                                   const content::NotificationSource& source,
@@ skipping 97 matching lines @@
 }
 
 void SafeBrowsingService::OnSendSerializedDownloadReport(
     const std::string& report) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (ping_manager())
     ping_manager()->ReportThreatDetails(report);
 }
 
 }  // namespace safe_browsing