Remove implicit conversions from scoped_refptr to T* in chrome/

chrome/service/cloud_print/cloud_print_proxy.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/service/cloud_print/cloud_print_proxy.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
@@ skipping 181 matching lines @@
   ConnectorSettings settings;
   settings.InitFrom(service_prefs_);
   info->proxy_id = settings.proxy_id();
 }
 
 void CloudPrintProxy::GetPrinters(std::vector<std::string>* printers) {
   ConnectorSettings settings;
   settings.InitFrom(service_prefs_);
   scoped_refptr<PrintSystem> print_system =
       PrintSystem::CreateInstance(settings.print_system_settings());
-  if (!print_system)
+  if (!print_system.get())
     return;
   PrintSystem::PrintSystemResult result = print_system->Init();
   if (!result.succeeded())
     return;
   printing::PrinterList printer_list;
   print_system->EnumeratePrinters(&printer_list);
   for (size_t i = 0; i < printer_list.size(); ++i)
     printers->push_back(printer_list[i].printer_name);
 }
 
@@ skipping 73 matching lines @@
 }
 
 void CloudPrintProxy::ShutdownBackend() {
   DCHECK(CalledOnValidThread());
   if (backend_.get())
     backend_->Shutdown();
   backend_.reset();
 }
 
 }  // namespace cloud_print