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

chrome/browser/ui/aura/accessibility/ax_tree_source_aura.h

 // Copyright 2014 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_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
 #define CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
 
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/aura/accessibility/ax_root_obj_wrapper.h"
 #include "ui/accessibility/ax_tree_data.h"
 #include "ui/accessibility/ax_tree_source.h"
 
 namespace views {
 class AXAuraObjWrapper;
 }  // namespace views
 
 // This class exposes the views hierarchy as an accessibility tree permitting
 // use with other accessibility classes.
@@ skipping 26 matching lines @@
   bool IsEqual(views::AXAuraObjWrapper* node1,
                views::AXAuraObjWrapper* node2) const override;
   views::AXAuraObjWrapper* GetNull() const override;
   void SerializeNode(views::AXAuraObjWrapper* node,
                      ui::AXNodeData* out_data) const override;
 
   // Useful for debugging.
   std::string ToString(views::AXAuraObjWrapper* root, std::string prefix);
 
  private:
-  scoped_ptr<AXRootObjWrapper> root_;
+  std::unique_ptr<AXRootObjWrapper> root_;
 
   DISALLOW_COPY_AND_ASSIGN(AXTreeSourceAura);
 };
 
 #endif  // CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_