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

chrome/browser/local_discovery/service_discovery_client_mdns.cc

 // Copyright 2014 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/local_discovery/service_discovery_client_mdns.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 189 matching lines @@
   }
 
   // ServiceWatcher methods.
   void Start() override {
     if (implementation()) {
       PostToMdnsThread(base::Bind(&ServiceWatcher::Start,
                                   base::Unretained(implementation())));
     }
   }
 
-  void DiscoverNewServices(bool force_update) override {
+  void DiscoverNewServices() override {
     if (implementation()) {
       PostToMdnsThread(base::Bind(&ServiceWatcher::DiscoverNewServices,
-                                  base::Unretained(implementation()),
-                                  force_update));
+                                  base::Unretained(implementation())));
     }
   }
 
   void SetActivelyRefreshServices(bool actively_refresh_services) override {
     if (implementation()) {
       PostToMdnsThread(base::Bind(&ServiceWatcher::SetActivelyRefreshServices,
                                   base::Unretained(implementation()),
                                   actively_refresh_services));
     }
   }
@@ skipping 222 matching lines @@
   OnBeforeMdnsDestroy();
   // After calling |Proxy::OnMdnsDestroy| all references to client_ and mdns_
   // should be destroyed.
   if (client_)
     mdns_runner_->DeleteSoon(FROM_HERE, client_.release());
   if (mdns_)
     mdns_runner_->DeleteSoon(FROM_HERE, mdns_.release());
 }
 
 }  // namespace local_discovery