Allow CollectionViewModel/Controller queries without SectionIdentifier

ios/chrome/browser/ui/history/history_collection_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.
 
 #include "ios/chrome/browser/ui/history/history_collection_view_controller.h"
 
 #import <MobileCoreServices/MobileCoreServices.h>
 
 #include <memory>
 
@@ skipping 267 matching lines @@
   [self openURL:item.URL];
 }
 
 - (void)historyEntryItemDidRequestDelete:(HistoryEntryItem*)item {
   NSInteger sectionIdentifier =
       [self.entryInserter sectionIdentifierForTimestamp:item.timestamp];
   if ([self.collectionViewModel
           hasSectionForSectionIdentifier:sectionIdentifier] &&
       [self.collectionViewModel hasItem:item
                 inSectionWithIdentifier:sectionIdentifier]) {
-    NSIndexPath* indexPath =
-        [self.collectionViewModel indexPathForItem:item
-                           inSectionWithIdentifier:sectionIdentifier];
+    NSIndexPath* indexPath = [self.collectionViewModel indexPathForItem:item];
     [self.collectionView
         selectItemAtIndexPath:indexPath
                      animated:NO
                scrollPosition:UICollectionViewScrollPositionNone];
     [self deleteSelectedItemsFromHistory];
   }
 }
 
 - (void)historyEntryItemDidRequestCopy:(HistoryEntryItem*)item {
   StoreURLInPasteboard(item.URL);
 }
 
 - (void)historyEntryItemDidRequestOpenInNewTab:(HistoryEntryItem*)item {
   [self openURLInNewTab:item.URL];
 }
 
 - (void)historyEntryItemDidRequestOpenInNewIncognitoTab:
     (HistoryEntryItem*)item {
   [self openURLInNewIncognitoTab:item.URL];
 }
 
 - (void)historyEntryItemShouldUpdateView:(HistoryEntryItem*)item {
   NSInteger sectionIdentifier =
       [self.entryInserter sectionIdentifierForTimestamp:item.timestamp];
   // If the item is still in the model, reconfigure it.
   if ([self.collectionViewModel
           hasSectionForSectionIdentifier:sectionIdentifier] &&
       [self.collectionViewModel hasItem:item
                 inSectionWithIdentifier:sectionIdentifier]) {
-    [self
-        reconfigureCellsForItems:@[ item ]
-         inSectionWithIdentifier:
-             [self.entryInserter sectionIdentifierForTimestamp:item.timestamp]];
+    [self reconfigureCellsForItems:@[ item ]];
   }
 }
 
 #pragma mark - HistoryServiceFacadeDelegate
 
 - (void)historyServiceFacade:(HistoryServiceFacade*)facade
        didReceiveQueryResult:(HistoryServiceFacade::QueryResult)result {
   self.loading = NO;
   // If history sync is enabled and there hasn't been a response from synced
   // history, try fetching again.
@@ skipping 332 matching lines @@
         [self.collectionViewModel sectionIdentifierForSection:section];
     if ([self.collectionViewModel
             hasSectionForSectionIdentifier:sectionIdentifier]) {
       NSArray* items = [self.collectionViewModel
           itemsInSectionWithIdentifier:sectionIdentifier];
       for (id item in items) {
         HistoryEntryItem* historyItem =
             base::mac::ObjCCastStrict<HistoryEntryItem>(item);
         if (![entries containsObject:historyItem]) {
           NSIndexPath* indexPath =
-              [self.collectionViewModel indexPathForItem:historyItem
-                                 inSectionWithIdentifier:sectionIdentifier];
+              [self.collectionViewModel indexPathForItem:historyItem];
           [self.collectionView
               selectItemAtIndexPath:indexPath
                            animated:NO
                      scrollPosition:UICollectionViewScrollPositionNone];
         }
       }
     }
   }
 }
 
@@ skipping 126 matching lines @@
                        shouldCloseWithCompletion:^{
                          [self.URLLoader webPageOrderedOpen:copiedURL
                                                    referrer:web::Referrer()
                                                 inIncognito:YES
                                                inBackground:NO
                                                    appendTo:kLastTab];
                        }];
 }
 
 @end