mac: Remove unused includes of scoped_nsobject.h.

chrome/browser/ui/cocoa/content_settings/content_setting_bubble_cocoa.h

 // Copyright (c) 2012 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.
 
 #include <map>
 
 #import <Cocoa/Cocoa.h>
 
-#include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 #include "content/public/common/media_stream_request.h"
 
 class ContentSettingBubbleModel;
 class ContentSettingMediaMenuModel;
 @class InfoBubbleView;
 
 namespace content_setting_bubble {
 // For every "show popup" button, remember the index of the popup tab contents
@@ skipping 65 matching lines @@
 - (IBAction)mediaMenuChanged:(id)sender;
 
 @end
 
 @interface ContentSettingBubbleController (TestingAPI)
 
 // Returns the weak reference to the |mediaMenus_|.
 - (content_setting_bubble::MediaMenuPartsMap*)mediaMenus;
 
 @end