Use CollectionViewTextItem instead of a cast

ios/chrome/browser/ui/settings/privacy_collection_view_controller.mm

 // Copyright 2015 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/ui/settings/privacy_collection_view_controller.h"
 
 #include "base/ios/ios_util.h"
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #import "base/mac/foundation_util.h"
@@ skipping 147 matching lines @@
   [super loadModel];
 
   CollectionViewModel* model = self.collectionViewModel;
 
   // Other Devices Section
   [model addSectionWithIdentifier:SectionIdentifierOtherDevices];
   CollectionViewTextItem* otherDevicesHeader = [[[CollectionViewTextItem alloc]
       initWithType:ItemTypeOtherDevicesHeader] autorelease];
   otherDevicesHeader.text =
       l10n_util::GetNSString(IDS_IOS_OPTIONS_CONTINUITY_LABEL);
+  otherDevicesHeader.textColor = [[MDCPalette greyPalette] tint500];
   [model setHeader:otherDevicesHeader
       forSectionWithIdentifier:SectionIdentifierOtherDevices];
   [model addItem:[self handoffDetailItem]
       toSectionWithIdentifier:SectionIdentifierOtherDevices];
 
   // Web Services Section
   [model addSectionWithIdentifier:SectionIdentifierWebServices];
   CollectionViewTextItem* webServicesHeader = [[[CollectionViewTextItem alloc]
       initWithType:ItemTypeWebServicesHeader] autorelease];
   webServicesHeader.text =
       l10n_util::GetNSString(IDS_IOS_OPTIONS_WEB_SERVICES_LABEL);
+  webServicesHeader.textColor = [[MDCPalette greyPalette] tint500];
   [model setHeader:webServicesHeader
       forSectionWithIdentifier:SectionIdentifierWebServices];
   _showSuggestionsItem.reset([[self showSuggestionsSwitchItem] retain]);
   [model addItem:_showSuggestionsItem
       toSectionWithIdentifier:SectionIdentifierWebServices];
 
   if ([TouchToSearchPermissionsMediator isTouchToSearchAvailableOnDevice]) {
     [model addItem:[self contextualSearchDetailItem]
         toSectionWithIdentifier:SectionIdentifierWebServices];
   }
@@ skipping 142 matching lines @@
     CollectionViewSwitchCell* switchCell =
         base::mac::ObjCCastStrict<CollectionViewSwitchCell>(cell);
     [switchCell.switchView addTarget:self
                               action:@selector(showSuggestionsToggled:)
                     forControlEvents:UIControlEventValueChanged];
   }
 
   return cell;
 }
 
-- (UICollectionReusableView*)collectionView:(UICollectionView*)collectionView
-          viewForSupplementaryElementOfKind:(NSString*)kind
-                                atIndexPath:(NSIndexPath*)indexPath {
-  UICollectionReusableView* view = [super collectionView:collectionView
-                       viewForSupplementaryElementOfKind:kind
-                                             atIndexPath:indexPath];
-
-  MDCCollectionViewTextCell* textCell =
-      base::mac::ObjCCast<MDCCollectionViewTextCell>(view);
-  if (textCell) {
-    textCell.textLabel.textColor = [[MDCPalette greyPalette] tint500];
-  }
-  return view;
-}
-
 #pragma mark UICollectionViewDelegate
 - (void)collectionView:(UICollectionView*)collectionView
     didSelectItemAtIndexPath:(NSIndexPath*)indexPath {
   [super collectionView:collectionView didSelectItemAtIndexPath:indexPath];
   NSInteger itemType =
       [self.collectionViewModel itemTypeForIndexPath:indexPath];
 
   // Items that push a new view controller.
   base::scoped_nsobject<UIViewController> controller;
 
@@ skipping 141 matching lines @@
 
     _sendUsageDetailItem.get().detailText = detailText;
 
     [self reconfigureCellsForItems:@[ _sendUsageDetailItem ]
            inSectionWithIdentifier:SectionIdentifierWebServices];
     return;
   }
 }
 
 @end