Remove the (broken and unneeded) 'force_update' option from ServiceWatcher::DiscoverNewDevices.

chrome/browser/printing/cloud_print/privet_notifications.cc

 // Copyright 2013 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/printing/cloud_print/privet_notifications.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 321 matching lines @@
 void PrivetNotificationService::StartLister() {
   ReportPrivetUmaEvent(PRIVET_LISTER_STARTED);
 #if defined(ENABLE_MDNS)
   traffic_detector_ = nullptr;
 #endif  // ENABLE_MDNS
   service_discovery_client_ =
       local_discovery::ServiceDiscoverySharedClient::GetInstance();
   device_lister_.reset(
       new PrivetDeviceListerImpl(service_discovery_client_.get(), this));
   device_lister_->Start();
-  device_lister_->DiscoverNewDevices(false);
+  device_lister_->DiscoverNewDevices();
 
   std::unique_ptr<PrivetHTTPAsynchronousFactory> http_factory(
       PrivetHTTPAsynchronousFactory::CreateInstance(
           content::BrowserContext::GetDefaultStoragePartition(profile_)->
               GetURLRequestContext()));
 
   privet_notifications_listener_.reset(
       new PrivetNotificationsListener(std::move(http_factory), this));
 }
 
@@ skipping 35 matching lines @@
   profile_->GetPrefs()->SetBoolean(prefs::kLocalDiscoveryNotificationsEnabled,
                                    false);
 }
 
 void PrivetNotificationDelegate::CloseNotification() {
   g_browser_process->notification_ui_manager()->CancelById(
       id(), NotificationUIManager::GetProfileID(profile_));
 }
 
 }  // namespace cloud_print