Switch to standard integer types in ios/.

ios/net/cookies/cookie_creation_time_manager.mm

 // Copyright (c) 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_creation_time_manager.h"
 
 #include <Foundation/Foundation.h>
+#include <stddef.h>
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/time/time.h"
 
 // Key holding the creation-time in NSHTTPCookie properties.
 // This key is undocumented, and its value has type NSNumber.
 NSString* const kHTTPCookieCreated = @"Created";
 
 namespace {
@@ skipping 93 matching lines @@
   }
 }
 
 void CookieCreationTimeManager::Clear() {
   DCHECK(thread_checker_.CalledOnValidThread());
   creation_times_.clear();
   unique_times_.clear();
 }
 
 }  // namespace net