Change CookieStore::DeleteCallback to take uint32_t.

ios/net/cookies/cookie_store_ios.mm

 // Copyright 2012 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/net/cookies/cookie_store_ios.h"
 
 #import <Foundation/Foundation.h>
 #include <stddef.h>
 
 #include "base/bind.h"
@@ skipping 843 matching lines @@
 void CookieStoreIOS::UpdateCachesAfterSet(SetCookiesCallback callback,
                                           bool success) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (success)
     UpdateCachesFromCookieMonster();
   if (!callback.is_null())
     std::move(callback).Run(success);
 }
 
 void CookieStoreIOS::UpdateCachesAfterDelete(DeleteCallback callback,
-                                             int num_deleted) {
+                                             uint32_t num_deleted) {
   DCHECK(thread_checker_.CalledOnValidThread());
   UpdateCachesFromCookieMonster();
   if (!callback.is_null())
     std::move(callback).Run(num_deleted);
 }
 
 void CookieStoreIOS::UpdateCachesAfterClosure(base::OnceClosure callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   UpdateCachesFromCookieMonster();
   if (!callback.is_null())
     std::move(callback).Run();
 }
 
 net::CookieList
 CookieStoreIOS::CanonicalCookieListFromSystemCookies(NSArray* cookies) {
   net::CookieList cookie_list;
   cookie_list.reserve([cookies count]);
   for (NSHTTPCookie* cookie in cookies) {
     base::Time created = creation_time_manager_->GetCreationTime(cookie);
     cookie_list.push_back(CanonicalCookieFromSystemCookie(cookie, created));
   }
   return cookie_list;
 }
 
 }  // namespace net