[ios] Update panel after history item deletion

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 619 matching lines @@
         [self.entryInserter removeSection:section];
       }
     }
   }
       completion:^(BOOL) {
         // If only the header section remains, there are no history entries.
         if ([self.collectionViewModel numberOfSections] == 1) {
           self.entriesType = NO_ENTRIES;
         }
         [self updateEntriesStatusMessage];
+        [self.delegate historyCollectionViewControllerDidChangeEntries:self];
       }];
 }
 
 - (void)filterForHistoryEntries:(NSArray*)entries {
   self.collectionView.allowsMultipleSelection = YES;
   for (int section = 1; section < [self.collectionViewModel numberOfSections];
        ++section) {
     NSInteger sectionIdentifier =
         [self.collectionViewModel sectionIdentifierForSection:section];
     if ([self.collectionViewModel
@@ skipping 160 matching lines @@
   NSData* plainText = [base::SysUTF8ToNSString(URL.spec())
       dataUsingEncoding:NSUTF8StringEncoding];
   NSDictionary* copiedItem = @{
     (NSString*)kUTTypeURL : net::NSURLWithGURL(URL),
     (NSString*)kUTTypeUTF8PlainText : plainText,
   };
   [[UIPasteboard generalPasteboard] setItems:@[ copiedItem ]];
 }
 
 @end