Switch print preview to in browser mdns for per-user Chrome installs

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 669 matching lines @@
                  base::Unretained(results)),
       base::Bind(&PrintPreviewHandler::SetupPrinterList,
                  weak_factory_.GetWeakPtr(),
                  base::Owned(results)));
 }
 
 void PrintPreviewHandler::HandleGetPrivetPrinters(const base::ListValue* args) {
   if (!PrivetPrintingEnabled())
     return web_ui()->CallJavascriptFunction("onPrivetPrinterSearchDone");
 #if defined(ENABLE_SERVICE_DISCOVERY)
-  local_discovery::ServiceDiscoverySharedClient::GetInstanceWithoutAlert(
-      base::Bind(&PrintPreviewHandler::StartPrivetLister,
-                 weak_factory_.GetWeakPtr()));
+  using local_discovery::ServiceDiscoverySharedClient;
+  scoped_refptr<ServiceDiscoverySharedClient> service_discovery =
+      ServiceDiscoverySharedClient::GetInstance();
+  StartPrivetLister(service_discovery);
 #endif  // ENABLE_SERVICE_DISCOVERY
 }
 
 void PrintPreviewHandler::HandleStopGetPrivetPrinters(
     const base::ListValue* args) {
 #if defined(ENABLE_SERVICE_DISCOVERY)
   if (PrivetPrintingEnabled() && printer_lister_) {
     printer_lister_->Stop();
   }
 #endif
@@ skipping 1011 matching lines @@
 
 void PrintPreviewHandler::UnregisterForGaiaCookieChanges() {
   if (gaia_cookie_manager_service_)
     gaia_cookie_manager_service_->RemoveObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }