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

chrome/browser/ui/cocoa/website_settings/split_block_button.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/website_settings/split_block_button.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
@@ skipping 77 matching lines @@
 @interface SplitButtonTitleCell : ConstrainedWindowButtonCell
 - (NSRect)rect;
 @end
 
 // A button cell used by SplitBlockButton, containing the popup menu.
 @interface SplitButtonPopUpCell :
     NSPopUpButtonCell<ConstrainedWindowButtonDrawableCell> {
  @private
   BOOL isMouseInside_;
   base::scoped_nsobject<MenuController> menuController_;
-  scoped_ptr<ui::SimpleMenuModel> menuModel_;
+  std::unique_ptr<ui::SimpleMenuModel> menuModel_;
 }
 
 // Designated initializer.
 - (id)initWithMenuDelegate:(ui::SimpleMenuModel::Delegate*)menuDelegate;
 
 - (NSRect)rect;
 
 @end
 
 @implementation SplitBlockButton
@@ skipping 223 matching lines @@
   [super drawBorderAndBackgroundWithFrame:NSOffsetRect(frame, -4, 0)
                                    inView:controlView];
 }
 
 - (NSRect)rect {
   NSSize size = [self cellSize];
   return NSMakeRect(0, 0, std::ceil(size.width), std::ceil(size.height));
 }
 
 @end