Expose font and color of the main and secondary texts in CollectionViewTextItem

ios/chrome/browser/ui/collection_view/cells/collection_view_text_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_COLLECTION_VIEW_CELLS_COLLECTION_VIEW_TEXT_ITEM_H_
 #define IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_CELLS_COLLECTION_VIEW_TEXT_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"
 
 // Collection view item to represent and configure an MDCCollectionViewTextCell.
 @interface CollectionViewTextItem : CollectionViewItem
 
 // The accessory type for the represented cell.
 @property(nonatomic) MDCCollectionViewCellAccessoryType accessoryType;
 
 // The main text to display.
-@property(nonatomic, copy) NSString* text;
+@property(nonatomic, nullable, copy) NSString* text;
 
 // The secondary text to display.
-@property(nonatomic, copy) NSString* detailText;
+@property(nonatomic, nullable, copy) NSString* detailText;
 
 // The image to show.
-@property(nonatomic, strong) UIImage* image;
+@property(nonatomic, nullable, strong) UIImage* image;
+
+// The font of the main text. The Default value is the medium Roboto font of
+// size 14.
+@property(nonatomic, null_resettable, copy) UIFont* textFont;
+
+// The color of the main text. The Default value is the 900 tint color of the
+// grey palette.
+@property(nonatomic, null_resettable, copy) UIColor* textColor;
+
+// The font of the secondary text. The Default value is the regular Roboto font
+// of size 14.
+@property(nonatomic, null_resettable, copy) UIFont* detailTextFont;
+
+// The color of the secondary text. The default value is the 500 tint color of
+// the grey palette.
+@property(nonatomic, null_resettable, copy) UIColor* detailTextColor;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_CELLS_COLLECTION_VIEW_TEXT_ITEM_H_