Switch to standard integer types in ipc/.

ipc/attachment_broker_mac_unittest.cc

 // 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.
 
 #include "build/build_config.h"
 
 #include <fcntl.h>
 #include <mach/mach_vm.h>
+#include <stddef.h>
 #include <sys/mman.h>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/mach_logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
@@ skipping 1304 matching lines @@
     SendControlMessage(sender, success);
   }
 }
 
 MULTIPROCESS_IPC_TEST_CLIENT_MAIN(MemoryUsageManyMessages) {
   return CommonPrivilegedProcessMain(&MemoryUsageManyMessagesCallback,
                                      "MemoryUsageManyMessages");
 }
 
 }  // namespace