[Mac] Consolidate all files relating to preferences in a subdir of c/b/ui/coc...

chrome/browser/ui/cocoa/search_engine_list_model.h

-// Copyright (c) 2009 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_SEARCH_ENGINE_LIST_MODEL_H_
-#define CHROME_BROWSER_UI_COCOA_SEARCH_ENGINE_LIST_MODEL_H_
-#pragma once
-
-#import <Cocoa/Cocoa.h>
-
-#include "base/scoped_nsobject.h"
-#include "base/scoped_ptr.h"
-
-class TemplateURLModel;
-class SearchEngineObserver;
-
-// The model for the "default search engine" combobox in preferences. Bridges
-// between the cross-platform TemplateURLModel and Cocoa while watching for
-// changes to the cross-platform model.
-
-@interface SearchEngineListModel : NSObject {
- @private
-  TemplateURLModel* model_;  // weak, owned by Profile
-  scoped_ptr<SearchEngineObserver> observer_;  // watches for model changes
-  scoped_nsobject<NSArray> engines_;
-}
-
-// Initialize with the given template model.
-- (id)initWithModel:(TemplateURLModel*)model;
-
-// Returns an array of NSString's corresponding to the user-visible names of the
-// search engines.
-- (NSArray*)searchEngines;
-
-// The index into |-searchEngines| of the current default search engine. If
-// there is no default search engine, the value is -1. The setter changes the
-// back-end preference.
-- (NSInteger)defaultIndex;
-- (void)setDefaultIndex:(NSInteger)index;
-// Return TRUE if the default is managed via policy.
-- (BOOL)isDefaultManaged;
-@end
-
-// Broadcast when the cross-platform model changes. This can be used to update
-// any view state that may rely on the position of items in the list.
-extern NSString* const kSearchEngineListModelChangedNotification;
-
-#endif  // CHROME_BROWSER_UI_COCOA_SEARCH_ENGINE_LIST_MODEL_H_