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

chrome/browser/ui/views/toolbar/chevron_menu_button.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_VIEWS_TOOLBAR_CHEVRON_MENU_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_CHEVRON_MENU_BUTTON_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/views/controls/button/menu_button.h"
 #include "ui/views/controls/button/menu_button_listener.h"
 
 class BrowserActionsContainer;
 
 // The MenuButton for the chevron in the extension toolbar, which is also
 // responsible for showing the legacy (drop-down) overflow menu.
 class ChevronMenuButton : public views::MenuButton,
                           public views::MenuButtonListener {
  public:
   explicit ChevronMenuButton(
       BrowserActionsContainer* browser_actions_container);
   ~ChevronMenuButton() override;
 
   // Closes the overflow menu (and any context menu), if it is open.
   void CloseMenu();
 
  private:
   class MenuController;
 
   // views::MenuButton:
-  scoped_ptr<views::LabelButtonBorder> CreateDefaultBorder() const override;
+  std::unique_ptr<views::LabelButtonBorder> CreateDefaultBorder()
+      const override;
   bool GetDropFormats(
       int* formats,
       std::set<ui::Clipboard::FormatType>* format_types) override;
   bool AreDropTypesRequired() override;
   bool CanDrop(const ui::OSExchangeData& data) override;
   void OnDragEntered(const ui::DropTargetEvent& event) override;
   int OnDragUpdated(const ui::DropTargetEvent& event) override;
   void OnDragExited() override;
   int OnPerformDrop(const ui::DropTargetEvent& event) override;
 
   // views::MenuButtonListener:
   void OnMenuButtonClicked(views::MenuButton* source,
                            const gfx::Point& point,
                            const ui::Event* event) override;
 
   // Shows the overflow menu.
   void ShowOverflowMenu(bool for_drop);
 
   // Called by the overflow menu when all the work is done.
   void MenuDone();
 
   // The owning BrowserActionsContainer.
   BrowserActionsContainer* browser_actions_container_;
 
   // The overflow menu controller.
-  scoped_ptr<MenuController> menu_controller_;
+  std::unique_ptr<MenuController> menu_controller_;
 
   base::WeakPtrFactory<ChevronMenuButton> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChevronMenuButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_CHEVRON_MENU_BUTTON_H_