Convert //ios from scoped_ptr to std::unique_ptr.

ios/chrome/browser/safe_browsing/ui_manager.h

 // Copyright 2015 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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them.
 
 #ifndef IOS_CHROME_BROWSER_SAFE_BROWSING_UI_MANAGER_H_
 #define IOS_CHROME_BROWSER_SAFE_BROWSING_UI_MANAGER_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "ios/chrome/browser/safe_browsing/hit_report.h"
 #include "ios/chrome/browser/safe_browsing/util.h"
 #include "url/gurl.h"
 
 namespace base {
 class Thread;
 }  // namespace base
@@ skipping 127 matching lines @@
   scoped_refptr<SafeBrowsingService> sb_service_;
 
   base::ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingUIManager);
 };
 
 }  // namespace safe_browsing
 
 #endif  // IOS_CHROME_BROWSER_SAFE_BROWSING_UI_MANAGER_H_