Changing multiprocess test SpawnChild to return a struct.

base/memory/shared_memory_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 <mach/mach.h>
 #include <mach/mach_vm.h>
 #include <servers/bootstrap.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 186 matching lines @@
     // Pass the service name to the child process.
     command_line.AppendSwitchASCII(g_service_switch_name, service_name_);
     return command_line;
   }
 
   void SetUpChild(const std::string& name) {
     // Make a random service name so that this test doesn't conflict with other
     // similar tests.
     service_name_ = CreateRandomServiceName();
     server_port_.reset(BecomeMachServer(service_name_.c_str()));
-    child_process_ = SpawnChild(name);
+    base::SpawnChildResult spawn_result = SpawnChild(name);
+    child_process_ = std::move(spawn_result.process);
     client_port_.reset(ReceiveMachPort(server_port_.get()));
   }
 
   static const int s_memory_size = 99999;
 
  protected:
   std::string service_name_;
 
   // A port on which the main process listens for mach messages from the child
   // process.
@@ skipping 232 matching lines @@
 
     // Intentionally map with |readonly| set to |false|.
     SharedMemory shared_memory2(shm2, false);
     shared_memory2.Map(s_memory_size);
   }
 
   EXPECT_EQ(active_name_count, GetActiveNameCount());
 }
 
 }  //  namespace base