[Extensions] Code Cleanup - Remove redundant smart-ptr get()s

chrome/browser/extensions/api/mdns/dns_sd_registry_unittest.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/extensions/api/mdns/dns_sd_registry.h"
 #include "chrome/browser/extensions/api/mdns/dns_sd_delegate.h"
 #include "chrome/browser/extensions/api/mdns/dns_sd_device_lister.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 13 matching lines @@
   ~TestDnsSdRegistry() override {}
 
   MockDnsSdDeviceLister* GetListerForService(const std::string& service_type) {
     return listers_[service_type];
   }
 
   int GetServiceListenerCount(const std::string& service_type) {
     if (service_data_map_.find(service_type) == service_data_map_.end())
       return 0;
 
-    return service_data_map_[service_type].get()->GetListenerCount();
+    return service_data_map_[service_type]->GetListenerCount();
   }
 
   MockDnsSdDeviceLister* GetLister(const std::string& service_type) {
     return listers_.find(service_type) != listers_.end()
                ? listers_[service_type]
                : nullptr;
   }
 
   DnsSdDelegate* GetDelegate() {
     return delegate_;
@@ skipping 210 matching lines @@
   service.ip_address = "192.168.0.100";
   registry_->GetDelegate()->ServiceChanged(service_type, true, service);
   // Update with changed ip address.
   service.ip_address = "192.168.0.101";
   registry_->GetDelegate()->ServiceChanged(service_type, false, service);
   // Update with no changes to the service.
   registry_->GetDelegate()->ServiceChanged(service_type, false, service);
 }
 
 }  // namespace extensions