Use CollectionViewTextItem instead of a cast

ios/chrome/browser/payments/payment_request_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/payments/payment_request_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 242 matching lines @@
         uppercaseStringWithLocale:[NSLocale currentLocale]];
     addAddressItem.accessibilityTraits |= UIAccessibilityTraitButton;
   }
   [model addItem:shippingAddressItem
       toSectionWithIdentifier:SectionIdentifierShipping];
 
   CollectionViewItem* shippingOptionItem = nil;
   if (_paymentRequest->selected_shipping_option()) {
     CollectionViewTextItem* selectedShippingOptionItem =
         [[CollectionViewTextItem alloc] initWithType:ItemTypeShippingOption];
+    selectedShippingOptionItem.textFont = [MDCTypography body2Font];
+    selectedShippingOptionItem.textColor = [[MDCPalette greyPalette] tint900];
+    selectedShippingOptionItem.detailTextFont = [MDCTypography body1Font];
+    selectedShippingOptionItem.detailTextColor =
+        [[MDCPalette greyPalette] tint900];
     shippingOptionItem = selectedShippingOptionItem;
+
     _selectedShippingOptionItem = selectedShippingOptionItem;
     [self fillShippingOptionItem:selectedShippingOptionItem
                       withOption:_paymentRequest->selected_shipping_option()];
     selectedShippingOptionItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
     selectedShippingOptionItem.accessibilityTraits |=
         UIAccessibilityTraitButton;
   } else {
     CollectionViewDetailItem* selectShippingOptionItem =
         [[CollectionViewDetailItem alloc]
@@ skipping 189 matching lines @@
       [self.collectionViewModel itemTypeForIndexPath:indexPath];
   switch (itemType) {
     case ItemTypeAddShippingAddress: {
       CollectionViewDetailCell* detailCell =
           base::mac::ObjCCastStrict<CollectionViewDetailCell>(cell);
       detailCell.detailTextLabel.font = [MDCTypography body2Font];
       detailCell.detailTextLabel.textColor =
           [[MDCPalette cr_bluePalette] tint700];
       break;
     }
-    case ItemTypeShippingOption: {
-      MDCCollectionViewTextCell* textCell =
-          base::mac::ObjCCastStrict<MDCCollectionViewTextCell>(cell);
-      textCell.textLabel.font = [MDCTypography body2Font];
-      textCell.textLabel.textColor = [[MDCPalette greyPalette] tint900];
-      textCell.detailTextLabel.font = [MDCTypography body1Font];
-      textCell.detailTextLabel.textColor = [[MDCPalette greyPalette] tint900];
-      break;
-    }
     default:
       break;
   }
   return cell;
 }
 
 #pragma mark UICollectionViewDelegate
 
 - (void)collectionView:(UICollectionView*)collectionView
     didSelectItemAtIndexPath:(NSIndexPath*)indexPath {
@@ skipping 68 matching lines @@
   NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
   if (type == ItemTypeSummaryTotal &&
       _paymentRequest->payment_details().display_items.empty()) {
     return YES;
   } else {
     return NO;
   }
 }
 
 @end