Use CollectionViewTextItem instead of a cast

ios/chrome/browser/ui/settings/autofill_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/autofill_collection_view_controller.h"
 
 #import "base/ios/weak_nsobject.h"
 #include "base/mac/foundation_util.h"
 #import "base/mac/objc_property_releaser.h"
 #import "base/mac/scoped_nsobject.h"
@@ skipping 152 matching lines @@
 
 - (CollectionViewItem*)walletSwitchItem {
   CollectionViewSwitchItem* switchItem = [[[CollectionViewSwitchItem alloc]
       initWithType:ItemTypeWalletSwitch] autorelease];
   switchItem.text = l10n_util::GetNSString(IDS_IOS_AUTOFILL_USE_WALLET_DATA);
   switchItem.on = [self isWalletEnabled];
   return switchItem;
 }
 
 - (CollectionViewItem*)profileSectionHeader {
-  CollectionViewTextItem* header = [
-      [[CollectionViewTextItem alloc] initWithType:ItemTypeHeader] autorelease];
+  CollectionViewTextItem* header = [self genericHeader];
   header.text = l10n_util::GetNSString(IDS_IOS_AUTOFILL_ADDRESSES_GROUP_NAME);
   return header;
 }
 
 - (CollectionViewItem*)cardSectionHeader {
-  CollectionViewTextItem* header = [
-      [[CollectionViewTextItem alloc] initWithType:ItemTypeHeader] autorelease];
+  CollectionViewTextItem* header = [self genericHeader];
   header.text = l10n_util::GetNSString(IDS_IOS_AUTOFILL_CREDITCARDS_GROUP_NAME);
   return header;
 }
 
+- (CollectionViewTextItem*)genericHeader {
+  CollectionViewTextItem* header = [
+      [[CollectionViewTextItem alloc] initWithType:ItemTypeHeader] autorelease];
+  header.textColor = [[MDCPalette greyPalette] tint500];
+  return header;
+}
+
 - (CollectionViewItem*)itemForProfile:
     (const autofill::AutofillProfile&)autofillProfile {
   std::string guid(autofillProfile.guid());
   NSString* title = base::SysUTF16ToNSString(autofillProfile.GetInfo(
       autofill::AutofillType(autofill::NAME_FULL), _locale));
   NSString* subTitle = base::SysUTF16ToNSString(autofillProfile.GetInfo(
       autofill::AutofillType(autofill::ADDRESS_HOME_LINE1), _locale));
   bool isServerProfile = autofillProfile.record_type() ==
                          autofill::AutofillProfile::SERVER_PROFILE;
 
@@ skipping 66 matching lines @@
   } else if (itemType == ItemTypeWalletSwitch) {
     CollectionViewSwitchCell* switchCell =
         base::mac::ObjCCastStrict<CollectionViewSwitchCell>(cell);
     [switchCell.switchView addTarget:self
                               action:@selector(walletSwitchChanged:)
                     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 - Switch Callbacks
 
 - (void)autofillSwitchChanged:(UISwitch*)switchView {
   [self setSwitchItemOn:[switchView isOn] itemType:ItemTypeAutofillSwitch];
   _userInteractionInProgress = YES;
   [self setAutofillEnabled:[switchView isOn]];
   _userInteractionInProgress = NO;
   [self updateEditButton];
 
   // Avoid reference cycle in block.
@@ skipping 324 matching lines @@
   return _browserState->GetPrefs()->GetBoolean(
       autofill::prefs::kAutofillWalletImportEnabled);
 }
 
 - (void)setWalletEnabled:(BOOL)isEnabled {
   _browserState->GetPrefs()->SetBoolean(
       autofill::prefs::kAutofillWalletImportEnabled, isEnabled);
 }
 
 @end