Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/nacl_host/nacl_file_host.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/nacl_host/nacl_file_host.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
@@ skipping 51 matching lines @@
     const std::string& filename,
     IPC::Message* reply_msg);
 
 void PnaclCheckDone(
     scoped_refptr<NaClHostMessageFilter> nacl_host_message_filter,
     const std::string& filename,
     IPC::Message* reply_msg,
     bool success) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (!success) {
-    NotifyRendererOfError(nacl_host_message_filter, reply_msg);
+    NotifyRendererOfError(nacl_host_message_filter.get(), reply_msg);
   } else {
     if (!BrowserThread::PostBlockingPoolTask(
             FROM_HERE,
             base::Bind(&DoOpenPnaclFile,
                        nacl_host_message_filter,
                        filename,
                        reply_msg))) {
-      NotifyRendererOfError(nacl_host_message_filter, reply_msg);
+      NotifyRendererOfError(nacl_host_message_filter.get(), reply_msg);
     }
   }
 }
 
 void TryInstallPnacl(
     scoped_refptr<NaClHostMessageFilter> nacl_host_message_filter,
     const std::string& filename,
     IPC::Message* reply_msg) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   ComponentUpdateService* cus = g_browser_process->component_updater();
@@ skipping 305 matching lines @@
       base::Bind(
           &DoOpenNaClExecutableOnThreadPool,
           nacl_host_message_filter,
           extension_info_map,
           file_url, reply_msg))) {
     NotifyRendererOfError(nacl_host_message_filter.get(), reply_msg);
   }
 }
 
 }  // namespace nacl_file_host