Change CookieStore::DeleteCallback to take uint32_t.

ios/chrome/browser/browsing_data/browsing_data_removal_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/browsing_data/browsing_data_removal_controller.h"
 
 #import <WebKit/WebKit.h>
 
+#include <cstdint>
 #include <memory>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/containers/hash_tables.h"
 #include "base/logging.h"
 #import "base/mac/bind_objc_block.h"
 #include "base/memory/ref_counted.h"
 #include "components/open_from_clipboard/clipboard_recent_content.h"
 #include "components/signin/ios/browser/account_consistency_service.h"
@@ skipping 13 matching lines @@
 #include "net/ssl/channel_id_store.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 // Empty callback used by DeleteAllCreatedBetweenAsync below.
-void DoNothing(int n) {}
+void DoNothing(uint32_t n) {}
 }
 
 @interface BrowsingDataRemovalController ()
 // Removes browsing data that is created by web views associated with
 // |browserState|. |mask| is obtained from
 // IOSChromeBrowsingDataRemover::RemoveDataMask. |deleteBegin| defines the begin
 // time from which the data has to be removed, up to the present time.
 // |completionHandler| is called when this operation finishes. This method
 // finishes removal of the browsing data even if |browserState| is destroyed
 // after this method call.
@@ skipping 372 matching lines @@
 
 - (BOOL)hasPendingRemovalOperations:(ios::ChromeBrowserState*)browserState {
   return _pendingRemovalCount[browserState] != 0;
 }
 
 - (void)browserStateDestroyed:(ios::ChromeBrowserState*)browserState {
   _pendingRemovalCount.erase(browserState);
 }
 
 @end