Printing fixups for scoped_refptr operator T* removal.

chrome/browser/ui/webui/print_preview/print_preview_handler.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/ui/webui/print_preview/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <map>
 #include <string>
@@ skipping 1345 matching lines @@
   }
   DCHECK(tmp_data->size() && tmp_data->front());
 
   *data = tmp_data;
   *title = print_preview_ui->initiator_title();
   return true;
 }
 
 #if defined(ENABLE_SERVICE_DISCOVERY)
 
-void PrintPreviewHandler::StartPrivetLister(
-    scoped_refptr<local_discovery::ServiceDiscoverySharedClient> client) {
+void PrintPreviewHandler::StartPrivetLister(const scoped_refptr<
+    local_discovery::ServiceDiscoverySharedClient>& client) {
   if (!PrivetPrintingEnabled())
     return web_ui()->CallJavascriptFunction("onPrivetPrinterSearchDone");
 
   Profile* profile = Profile::FromWebUI(web_ui());
-  DCHECK(!service_discovery_client_ || service_discovery_client_ == client);
+  DCHECK(!service_discovery_client_.get() ||
+         service_discovery_client_ == client);
   service_discovery_client_ = client;
   printer_lister_.reset(new local_discovery::PrivetLocalPrinterLister(
       service_discovery_client_.get(), profile->GetRequestContext(), this));
   printer_lister_->Start();
 }
 
 void PrintPreviewHandler::LocalPrinterChanged(
     bool added,
     const std::string& name,
     bool has_local_printing,
@@ skipping 205 matching lines @@
 
 void PrintPreviewHandler::UnregisterForMergeSession() {
   if (reconcilor_)
     reconcilor_->RemoveMergeSessionObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }