Replace scoped_ptr with std::unique_ptr in //ui

ui/base/models/tree_node_model.h

 // Copyright (c) 2012 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 UI_BASE_MODELS_TREE_NODE_MODEL_H_
 #define UI_BASE_MODELS_TREE_NODE_MODEL_H_
 
 #include <stddef.h>
 
 #include <algorithm>
+#include <memory>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/stl_util.h"
 #include "base/strings/string16.h"
 #include "ui/base/models/tree_model.h"
 
 namespace ui {
 
 // TreeNodeModel and TreeNodes provide an implementation of TreeModel around
 // TreeNodes.
 //
@@ skipping 265 matching lines @@
     DCHECK(node);
     AsNode(node)->SetTitle(title);
     NotifyObserverTreeNodeChanged(node);
   }
 
  private:
   // The observers.
   base::ObserverList<TreeModelObserver> observer_list_;
 
   // The root.
-  scoped_ptr<NodeType> root_;
+  std::unique_ptr<NodeType> root_;
 
   DISALLOW_COPY_AND_ASSIGN(TreeNodeModel);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_MODELS_TREE_NODE_MODEL_H_