Adds accessoryType property to CollectionViewItem

ios/chrome/browser/ui/settings/cells/encryption_item.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 IOS_CHROME_BROWSER_UI_SETTINGS_CELLS_ENCRYPTION_ITEM_H_
 #define IOS_CHROME_BROWSER_UI_SETTINGS_CELLS_ENCRYPTION_ITEM_H_
 
 #import <UIKit/UIKit.h>
 
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
 
 // Item displaying possible options in the Sync Encryption screen.
 @interface EncryptionItem : CollectionViewItem
 
-// The accessory type for the represented cell.
-@property(nonatomic) MDCCollectionViewCellAccessoryType accessoryType;
-
 // The text to display.
 @property(nonatomic, copy) NSString* text;
 
 // Whether or not the cell is enabled.  Disabled cells are drawn with dimmed
 // text.
 @property(nonatomic, assign, getter=isEnabled) BOOL enabled;
 
 @end
 
 // The cell associated to |EncryptionCell|.
 @interface EncryptionCell : MDCCollectionViewCell
 
 // UILabel corresponding to |text| from the item.
 @property(nonatomic, readonly, strong) UILabel* textLabel;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_SETTINGS_CELLS_ENCRYPTION_ITEM_H_