Improve process launch handle sharing API.

chrome/browser/extensions/api/messaging/native_process_launcher_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 "chrome/browser/extensions/api/messaging/native_process_launcher.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
@@ skipping 37 matching lines @@
 
   return result;
 }
 
 // static
 bool NativeProcessLauncher::LaunchNativeProcess(
     const base::CommandLine& command_line,
     base::Process* process,
     base::File* read_file,
     base::File* write_file) {
-  base::FileHandleMappingVector fd_map;
+  base::LaunchOptions options;
 
   int read_pipe_fds[2] = {0};
   if (HANDLE_EINTR(pipe(read_pipe_fds)) != 0) {
     LOG(ERROR) << "Bad read pipe";
     return false;
   }
   base::ScopedFD read_pipe_read_fd(read_pipe_fds[0]);
   base::ScopedFD read_pipe_write_fd(read_pipe_fds[1]);
-  fd_map.push_back(std::make_pair(read_pipe_write_fd.get(), STDOUT_FILENO));
+  options.fds_to_remap.push_back(
+      std::make_pair(read_pipe_write_fd.get(), STDOUT_FILENO));
 
   int write_pipe_fds[2] = {0};
   if (HANDLE_EINTR(pipe(write_pipe_fds)) != 0) {
     LOG(ERROR) << "Bad write pipe";
     return false;
   }
   base::ScopedFD write_pipe_read_fd(write_pipe_fds[0]);
   base::ScopedFD write_pipe_write_fd(write_pipe_fds[1]);
-  fd_map.push_back(std::make_pair(write_pipe_read_fd.get(), STDIN_FILENO));
+  options.fds_to_remap.push_back(
+      std::make_pair(write_pipe_read_fd.get(), STDIN_FILENO));
 
-  base::LaunchOptions options;
   options.current_directory = command_line.GetProgram().DirName();
-  options.fds_to_remap = &fd_map;
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   // Don't use no_new_privs mode, e.g. in case the host needs to use sudo.
   options.allow_new_privs = true;
 #endif
 
   base::Process local_process = base::LaunchProcess(command_line, options);
   if (!local_process.IsValid()) {
     LOG(ERROR) << "Error launching process";
     return false;
   }
 
   // We will not be reading from the write pipe, nor writing from the read pipe.
   write_pipe_read_fd.reset();
   read_pipe_write_fd.reset();
 
   *process = std::move(local_process);
   *read_file = base::File(read_pipe_read_fd.release());
   *write_file = base::File(write_pipe_write_fd.release());
 
   return true;
 }
 
 }  // namespace extensions