MachMessageServer: eliminate argument redundancy

util/mach/child_port_handshake.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 16 matching lines @@
 
 #include "base/logging.h"
 #include "base/mac/mach_logging.h"
 #include "base/mac/scoped_mach_port.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "util/file/fd_io.h"
 #include "util/mach/child_port.h"
 #include "util/mach/mach_extensions.h"
+#include "util/mach/mach_message.h"
 #include "util/mach/mach_message_server.h"
 
 namespace crashpad {
 
 ChildPortHandshake::ChildPortHandshake()
     : token_(0),
       pipe_read_(),
       pipe_write_(),
       child_port_(MACH_PORT_NULL),
       checked_in_(false) {
@@ skipping 159 matching lines @@
         // means that if more than one message is in the queue when kevent()
         // returns, no more notifications will be generated.
         while (!checked_in_) {
           // If a proper message is received from child_port_check_in(),
           // this will call HandleChildPortCheckIn().
           mach_msg_return_t mr =
               MachMessageServer::Run(&child_port_server,
                                      server_port_set,
                                      MACH_MSG_OPTION_NONE,
                                      MachMessageServer::kOneShot,
-                                     MachMessageServer::kNonblocking,
                                      MachMessageServer::kReceiveLargeIgnore,
-                                     MACH_MSG_TIMEOUT_NONE);
+                                     kMachMessageTimeoutNonblocking);
           if (mr == MACH_RCV_TIMED_OUT) {
             break;
           } else if (mr != MACH_MSG_SUCCESS) {
             MACH_LOG(ERROR, mr) << "MachMessageServer::Run";
             return MACH_PORT_NULL;
           }
         }
         break;
       }
 
@@ skipping 111 matching lines @@
       bootstrap_look_up(bootstrap_port, service_name.c_str(), &server_port);
   BOOTSTRAP_CHECK(kr == BOOTSTRAP_SUCCESS, kr) << "bootstrap_look_up";
   base::mac::ScopedMachSendRight server_port_owner(server_port);
 
   // Check in with the server.
   kr = child_port_check_in(server_port, token, port, right_type);
   MACH_CHECK(kr == KERN_SUCCESS, kr) << "child_port_check_in";
 }
 
 }  // namespace crashpad