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

ios/chrome/browser/ui/webui/history/browsing_history_handler.h

 // Copyright 2016 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.
 
 #ifndef IOS_CHROME_BROWSER_UI_WEBUI_HISTORY_BROWSING_HISTORY_HANDLER_H_
 #define IOS_CHROME_BROWSER_UI_WEBUI_HISTORY_BROWSING_HISTORY_HANDLER_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "base/strings/string16.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/timer/timer.h"
 #include "base/values.h"
 #include "components/history/core/browser/history_service_observer.h"
 #include "components/history/core/browser/url_row.h"
 #include "components/history/core/browser/web_history_service.h"
 #include "ios/public/provider/web/web_ui_ios_message_handler.h"
@@ skipping 37 matching lines @@
                  bool is_search_result,
                  const base::string16& snippet,
                  bool blocked_visit);
     HistoryEntry();
     virtual ~HistoryEntry();
 
     // Formats this entry's URL and title and adds them to |result|.
     void SetUrlAndTitle(base::DictionaryValue* result) const;
 
     // Converts the entry to a DictionaryValue to be owned by the caller.
-    scoped_ptr<base::DictionaryValue> ToValue(
+    std::unique_ptr<base::DictionaryValue> ToValue(
         bookmarks::BookmarkModel* bookmark_model,
         SupervisedUserService* supervised_user_service,
         const ProfileSyncService* sync_service) const;
 
     // Comparison function for sorting HistoryEntries from newest to oldest.
     static bool SortByTimeDescending(const HistoryEntry& entry1,
                                      const HistoryEntry& entry2);
 
     // The type of visits this entry represents: local, remote, or both.
     EntryType entry_type;
@@ skipping 97 matching lines @@
                      bool all_history,
                      bool expired,
                      const history::URLRows& deleted_rows,
                      const std::set<GURL>& favicon_urls) override;
 
   // Tracker for search requests to the history service.
   base::CancelableTaskTracker query_task_tracker_;
 
   // The currently-executing request for synced history results.
   // Deleting the request will cancel it.
-  scoped_ptr<history::WebHistoryService::Request> web_history_request_;
+  std::unique_ptr<history::WebHistoryService::Request> web_history_request_;
 
   // True if there is a pending delete requests to the history service.
   bool has_pending_delete_request_;
 
   // Tracker for delete requests to the history service.
   base::CancelableTaskTracker delete_task_tracker_;
 
   // The list of URLs that are in the process of being deleted.
   std::set<GURL> urls_to_be_deleted_;
 
@@ skipping 11 matching lines @@
 
   ScopedObserver<history::HistoryService, history::HistoryServiceObserver>
       history_service_observer_;
 
   base::WeakPtrFactory<BrowsingHistoryHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowsingHistoryHandler);
 };
 
 #endif  // IOS_CHROME_BROWSER_UI_WEBUI_HISTORY_BROWSING_HISTORY_HANDLER_H_