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

chrome/browser/ui/webui/browsing_history_handler.h

Index: chrome/browser/ui/webui/browsing_history_handler.h
diff --git a/chrome/browser/ui/webui/browsing_history_handler.h b/chrome/browser/ui/webui/browsing_history_handler.h
index b5e5a97d701e8d3884c52b901cc46aac81079692..8c297d55e08cdf73dbf6c066873f311388aa76c9 100644
--- a/chrome/browser/ui/webui/browsing_history_handler.h
+++ b/chrome/browser/ui/webui/browsing_history_handler.h
@@ -7,10 +7,10 @@
 
 #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"
@@ -65,7 +65,7 @@ class BrowsingHistoryHandler : public content::WebUIMessageHandler,
     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;
@@ -194,7 +194,7 @@ class BrowsingHistoryHandler : public content::WebUIMessageHandler,
 
   // 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_;