Fix instances of passing raw pointers to RefCounted objects in tasks.

chrome/browser/safe_browsing/safe_browsing_service.cc

Index: chrome/browser/safe_browsing/safe_browsing_service.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.cc b/chrome/browser/safe_browsing/safe_browsing_service.cc
index e0ac3d7211a887a51a92b7b5bed8728e67338ccd..a375ba4296551241e88be38e26e3a55f7bde008b 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service.cc
@@ -386,9 +386,6 @@ void SafeBrowsingService::OnIOInitialize(
                                                       mackey_url_prefix,
                                                       disable_auto_update);
 
-  // Balance the reference added by Start().
-  request_context_getter->Release();
-
   protocol_manager_->Initialize();
 }
 
@@ -648,14 +645,16 @@ void SafeBrowsingService::Start() {
   }
 
   // We will issue network fetches using the default profile's request context.
-  URLRequestContextGetter* request_context_getter =
+  scoped_refptr<URLRequestContextGetter> request_context_getter =
       GetDefaultProfile()->GetRequestContext();
-  request_context_getter->AddRef();  // Balanced in OnIOInitialize.
 
   ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
       NewRunnableMethod(
-          this, &SafeBrowsingService::OnIOInitialize, client_key, wrapped_key,
+          this,
+          &SafeBrowsingService::OnIOInitialize,
+          client_key,
+          wrapped_key,
           request_context_getter));
 }