Avoid a thread hop when initializing IPC to new processes

content/browser/child_process_launcher_helper_win.cc

 // Copyright 2017 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 "base/files/file_path.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
 #include "content/browser/child_process_launcher_helper.h"
@@ skipping 34 matching lines @@
     const FileMappedForLaunch& files_to_register,
     base::LaunchOptions* options) {
   DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER);
 }
 
 ChildProcessLauncherHelper::Process
 ChildProcessLauncherHelper::LaunchProcessOnLauncherThread(
     const base::LaunchOptions& options,
     std::unique_ptr<FileMappedForLaunch> files_to_register,
     bool* is_synchronous_launch,
-    int* launch_result) {
+    int* launch_result,
+    std::unique_ptr<mojo::edk::PendingProcessConnection>* pending_connection,
+    mojo::edk::ScopedPlatformHandle* server_handle) {
   DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER);
   *is_synchronous_launch = true;
   if (delegate_->ShouldLaunchElevated()) {
     // When establishing a Mojo connection, the pipe path has already been added
     // to the command line.
     base::LaunchOptions win_options;
     win_options.start_hidden = true;
     ChildProcessLauncherHelper::Process process;
     process.process = base::LaunchElevatedProcess(*command_line(), win_options);
     return process;
@@ skipping 44 matching lines @@
 // static
 void ChildProcessLauncherHelper::SetProcessBackgroundedOnLauncherThread(
       base::Process process, bool background) {
   DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER);
   if (process.CanBackgroundProcesses())
     process.SetProcessBackgrounded(background);
 }
 
 }  // namespace internal
 }  // namespace content