Remove implicit conversions from scoped_refptr to T* in chrome/browser/local_discovery/

chrome/browser/local_discovery/service_discovery_client_utility.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_utility.h"
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/local_discovery/service_discovery_host_client.h"
 #include "content/public/browser/browser_thread.h"
 
@@ skipping 78 matching lines @@
         FROM_HERE,
         base::Bind(&ServiceDiscoveryClientUtility::ReportSuccess,
                    weak_ptr_factory_.GetWeakPtr()),
         base::TimeDelta::FromSeconds(kReportSuccessAfterSeconds));
   } else {
     restart_attempts_ = -1;
     ReportSuccess();
   }
   // Run when host_client_ is created. Callbacks created by InvalidateWatchers
   // may create new watchers.
-  if (old_client)
+  if (old_client.get())
     old_client->InvalidateWatchers();
 }
 
 void ServiceDiscoveryClientUtility::ReportSuccess() {
   UMA_HISTOGRAM_COUNTS_100("LocalDiscovery.ClientRestartAttempts",
                            kMaxRestartAttempts - restart_attempts_);
 }
 
 }  // namespace local_discovery