Changing multiprocess test SpawnChild to return a struct.

chrome/installer/setup/setup_singleton_unittest.cc

 // Copyright 2016 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 "chrome/installer/setup/setup_singleton.h"
 
 #include <windows.h>
 
 #include <functional>
 #include <string>
@@ skipping 122 matching lines @@
   base::CommandLine MakeCmdLine(const std::string& procname) override {
     base::CommandLine command_line =
         base::MultiProcessTest::MakeCmdLine(procname);
     command_line.AppendSwitchPath(kInstallDirSwitch, install_dir_path());
     return command_line;
   }
 
   base::Process SpawnChildProcess(const std::string& process_name) {
     base::LaunchOptions options;
     options.start_hidden = true;
-    return SpawnChildWithOptions(process_name, options);
+    base::SpawnChildResult spawn_result =
+        SpawnChildWithOptions(process_name, options);
+    return std::move(spawn_result.process);
   }
 
   const base::FilePath& install_dir_path() const {
     return install_dir_.GetPath();
   }
 
  private:
   base::ScopedTempDir install_dir_;
 
   DISALLOW_COPY_AND_ASSIGN(SetupSingletonTest);
@@ skipping 59 matching lines @@
   // we are in the scope of a SetupSingleton).
   EXPECT_EQ(SUCCESS, CreateAndDeleteSentinelFile(install_dir_path()));
 
   // Join |wait_process|.
   int exit_code = 0;
   EXPECT_TRUE(wait_process.WaitForExit(&exit_code));
   EXPECT_EQ(SUCCESS, exit_code);
 }
 
 }  // namespace installer