Update from https://crrev.com/308331

net/test/spawned_test_server/local_test_server_posix.cc

Index: net/test/spawned_test_server/local_test_server_posix.cc
diff --git a/net/test/spawned_test_server/local_test_server_posix.cc b/net/test/spawned_test_server/local_test_server_posix.cc
index 0edbedf1e42b8f120ab7793e1dc303a351c6fa31..c770152ea6bc44c407c444cd5eb9709d68763fa3 100644
--- a/net/test/spawned_test_server/local_test_server_posix.cc
+++ b/net/test/spawned_test_server/local_test_server_posix.cc
@@ -139,7 +139,8 @@ bool LocalTestServer::LaunchPython(const base::FilePath& testserver_path) {
   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;
   }