Use CollectionViewTextItem instead of a cast

ios/chrome/browser/ui/settings/save_passwords_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/save_passwords_collection_view_controller.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/ios/ios_util.h"
@@ skipping 216 matching lines @@
       toSectionWithIdentifier:SectionIdentifierSavePasswordsSwitch];
 
   // Saved passwords.
   if ([passwordManagerEnabled_ value]) {
     if (!savedForms_.empty()) {
       [model addSectionWithIdentifier:SectionIdentifierSavedPasswords];
       CollectionViewTextItem* headerItem = [[[CollectionViewTextItem alloc]
           initWithType:ItemTypeHeader] autorelease];
       headerItem.text =
           l10n_util::GetNSString(IDS_PASSWORD_MANAGER_SHOW_PASSWORDS_TAB_TITLE);
+      headerItem.textColor = [[MDCPalette greyPalette] tint500];
       [model setHeader:headerItem
           forSectionWithIdentifier:SectionIdentifierSavedPasswords];
       for (const auto& form : savedForms_) {
         [model addItem:[self savedFormItemWithForm:form.get()]
             toSectionWithIdentifier:SectionIdentifierSavedPasswords];
       }
     }
     if (!blacklistedForms_.empty()) {
       [model addSectionWithIdentifier:SectionIdentifierBlacklist];
       CollectionViewTextItem* headerItem = [[[CollectionViewTextItem alloc]
           initWithType:ItemTypeHeader] autorelease];
       headerItem.text =
           l10n_util::GetNSString(IDS_PASSWORD_MANAGER_EXCEPTIONS_TAB_TITLE);
+      headerItem.textColor = [[MDCPalette greyPalette] tint500];
       [model setHeader:headerItem
           forSectionWithIdentifier:SectionIdentifierBlacklist];
       for (const auto& form : blacklistedForms_) {
         [model addItem:[self blacklistedFormItemWithForm:form.get()]
             toSectionWithIdentifier:SectionIdentifierBlacklist];
       }
     }
   }
 }
 
@@ skipping 117 matching lines @@
       ItemTypeSavePasswordsSwitch) {
     CollectionViewSwitchCell* switchCell =
         base::mac::ObjCCastStrict<CollectionViewSwitchCell>(cell);
     [switchCell.switchView addTarget:self
                               action:@selector(savePasswordsSwitchChanged:)
                     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 - BooleanObserver
 
 - (void)booleanDidChange:(id<ObservableBoolean>)observableBoolean {
   DCHECK_EQ(observableBoolean, passwordManagerEnabled_.get());
 
   // Update the item.
   savePasswordsItem_.get().on = [passwordManagerEnabled_ value];
 
   // Update the cell.
   [self reconfigureCellsForItems:@[ savePasswordsItem_ ]
@@ skipping 196 matching lines @@
 
 - (void)updateSuccessfulReauthTime {
   successfulReauthTime_.reset([[NSDate alloc] init]);
 }
 
 - (NSDate*)lastSuccessfulReauthTime {
   return successfulReauthTime_.get();
 }
 
 @end