mac: Update clients of scoped_nsobject.h.

ui/base/cocoa/controls/hover_image_menu_button_cell.h

 // Copyright 2013 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_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_
 #define UI_BASE_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_
 
 #import <Cocoa/Cocoa.h>
 
-#include "base/memory/scoped_nsobject.h"
+#include "base/mac/scoped_nsobject.h"
 #include "ui/base/ui_export.h"
 
 // A custom NSPopUpButtonCell that permits a hover image, and draws only an
 // image in its frame; no border, bezel or drop-down arrow. Use setDefaultImage:
 // to set the default image, setAlternateImage: to set the button shown while
 // the menu is active, and setHoverImage: for the mouseover hover image.
 UI_EXPORT
 @interface HoverImageMenuButtonCell : NSPopUpButtonCell {
  @private
-  scoped_nsobject<NSImage> hoverImage_;
+  base::scoped_nsobject<NSImage> hoverImage_;
   BOOL hovered_;
 }
 
 @property(retain, nonatomic) NSImage* hoverImage;
 @property(assign, nonatomic, getter=isHovered) BOOL hovered;
 
 // Return the image that would be drawn based on the current state flags.
 - (NSImage*)imageToDraw;
 
 // Set the default image to show on the menu button.
 - (void)setDefaultImage:(NSImage*)defaultImage;
 
 @end
 
 #endif  // UI_BASE_COCOA_CONTROLS_HOVER_IMAGE_MENU_BUTTON_CELL_H_