MachMessageServer: eliminate argument redundancy

util/mach/exc_server_variants_test.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 1028 matching lines @@
   // MachMultiprocess:
 
   void MachMultiprocessParent() override {
     UniversalMachExcServer universal_mach_exc_server(this);
 
     kern_return_t kr =
         MachMessageServer::Run(&universal_mach_exc_server,
                                LocalPort(),
                                kMachMessageOptions,
                                MachMessageServer::kOneShot,
-                               MachMessageServer::kBlocking,
                                MachMessageServer::kReceiveLargeError,
-                               0);
+                               kMachMessageTimeoutWaitIndefinitely);
     EXPECT_EQ(KERN_SUCCESS, kr)
         << MachErrorMessage(kr, "MachMessageServer::Run");
 
     EXPECT_TRUE(handled_);
   }
 
   void MachMultiprocessChild() override {
     // Set the parent as the exception handler for EXC_CRASH.
     kern_return_t kr = task_set_exception_ports(
         mach_task_self(), EXC_MASK_CRASH, RemotePort(), behavior_, flavor_);
@@ skipping 210 matching lines @@
 
     EXPECT_EQ(test_data.kr,
               ExcServerSuccessfulReturnValue(test_data.behavior,
                                              test_data.set_thread_state));
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad