Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

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 61 matching lines @@
  public:
   DnsSdRegistryTest() {}
   ~DnsSdRegistryTest() override {}
 
   void SetUp() override {
     registry_.reset(new TestDnsSdRegistry());
     registry_->AddObserver(&observer_);
   }
 
  protected:
-  scoped_ptr<TestDnsSdRegistry> registry_;
+  std::unique_ptr<TestDnsSdRegistry> registry_;
   MockDnsSdObserver observer_;
 };
 
 // Tests registering 2 listeners and removing one. The device lister should
 // not be destroyed.
 TEST_F(DnsSdRegistryTest, RegisterUnregisterListeners) {
   const std::string service_type = "_testing._tcp.local";
 
   EXPECT_CALL(observer_, OnDnsSdEvent(service_type,
       DnsSdRegistry::DnsSdServiceList())).Times(2);
@@ skipping 162 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