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

chrome/browser/ui/cocoa/toolbar/app_toolbar_button.h

 // Copyright 2016 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_COCOA_TOOLBAR_APP_TOOLBAR_BUTTON_H_
 #define CHROME_BROWSER_UI_COCOA_TOOLBAR_APP_TOOLBAR_BUTTON_H_
 
 #import <Cocoa/Cocoa.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #import "chrome/browser/ui/cocoa/menu_button.h"
 #include "chrome/browser/ui/toolbar/app_menu_icon_painter.h"
 
 class AppMenuButtonIconPainterDelegateMac;
 
 // Button for the app toolbar button.
 @interface AppToolbarButton : MenuButton {
  @private
-  scoped_ptr<AppMenuButtonIconPainterDelegateMac> delegate_;
+  std::unique_ptr<AppMenuButtonIconPainterDelegateMac> delegate_;
   AppMenuIconPainter::Severity severity_;
 }
 
 - (void)setSeverity:(AppMenuIconPainter::Severity)severity
       shouldAnimate:(BOOL)shouldAnimate;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TOOLBAR_APP_TOOLBAR_BUTTON_H_