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

chrome/browser/extensions/api/mdns/mdns_api.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/mdns_api.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/lazy_instance.h"
@@ skipping 48 matching lines @@
 
 // static
 BrowserContextKeyedAPIFactory<MDnsAPI>* MDnsAPI::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 void MDnsAPI::SetDnsSdRegistryForTesting(
     std::unique_ptr<DnsSdRegistry> dns_sd_registry) {
   dns_sd_registry_ = std::move(dns_sd_registry);
   if (dns_sd_registry_.get())
-    dns_sd_registry_.get()->AddObserver(this);
+    dns_sd_registry_->AddObserver(this);
 }
 
 void MDnsAPI::ForceDiscovery() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DnsSdRegistry* registry = dns_sd_registry();
   return registry->ForceDiscovery();
 }
 
 DnsSdRegistry* MDnsAPI::dns_sd_registry() {
   DCHECK(thread_checker_.CalledOnValidThread());
@@ skipping 186 matching lines @@
 AsyncApiFunction::ResponseAction MdnsForceDiscoveryFunction::Run() {
   MDnsAPI* api = MDnsAPI::Get(browser_context());
   if (!api) {
     return RespondNow(Error("Unknown error."));
   }
   api->ForceDiscovery();
   return RespondNow(NoArguments());
 }
 
 }  // namespace extensions