chrome: Add out-of-line copy ctors for complex classes.

chrome/browser/ui/webui/browsing_history_handler.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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_BROWSING_HISTORY_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_BROWSING_HISTORY_HANDLER_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 40 matching lines @@
       LOCAL_ENTRY,
       REMOTE_ENTRY,
       COMBINED_ENTRY
     };
 
     HistoryEntry(EntryType type, const GURL& url, const base::string16& title,
                  base::Time time, const std::string& client_id,
                  bool is_search_result, const base::string16& snippet,
                  bool blocked_visit, const std::string& accept_languages);
     HistoryEntry();
+    HistoryEntry(const HistoryEntry& other);
     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(
         bookmarks::BookmarkModel* bookmark_model,
         SupervisedUserService* supervised_user_service,
         const ProfileSyncService* sync_service) const;
@@ skipping 145 matching lines @@
 
   ScopedObserver<history::HistoryService, history::HistoryServiceObserver>
       history_service_observer_;
 
   base::WeakPtrFactory<BrowsingHistoryHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowsingHistoryHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_BROWSING_HISTORY_HANDLER_H_