Update from https://crrev.com/308331

net/test/spawned_test_server/local_test_server_posix.cc

 // Copyright (c) 2012 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 "net/test/spawned_test_server/local_test_server.h"
 
 #include <poll.h>
 
 #include <vector>
 
@@ skipping 121 matching lines @@
   OrphanedTestServerFilter filter(testserver_path.value(),
                                   base::IntToString(GetPort()));
   if (!base::KillProcesses("python", -1, &filter)) {
     LOG(WARNING) << "Failed to clean up older orphaned testserver instances.";
   }
 
   // Launch a new testserver process.
   base::LaunchOptions options;
 
   options.fds_to_remap = &map_write_fd;
-  if (!base::LaunchProcess(python_command, options, &process_handle_)) {
+  process_ = base::LaunchProcess(python_command, options);
+  if (!process_.IsValid()) {
     LOG(ERROR) << "Failed to launch " << python_command.GetCommandLineString();
     return false;
   }
 
   return true;
 }
 
 bool LocalTestServer::WaitToStart() {
   base::ScopedFD our_fd(child_fd_.release());
 
@@ skipping 17 matching lines @@
 
   if (!ParseServerData(server_data)) {
     LOG(ERROR) << "Could not parse server_data: " << server_data;
     return false;
   }
 
   return true;
 }
 
 }  // namespace net