Avoid a thread hop when initializing IPC to new processes

content/browser/child_process_launcher_helper_mac.cc

Index: content/browser/child_process_launcher_helper_mac.cc
diff --git a/content/browser/child_process_launcher_helper_mac.cc b/content/browser/child_process_launcher_helper_mac.cc
index 9a8bda0470ede897e8144e096bd4529eacdbf149..01c731bfcee772b432ce9de37ec51e4c108dc225 100644
--- a/content/browser/child_process_launcher_helper_mac.cc
+++ b/content/browser/child_process_launcher_helper_mac.cc
@@ -80,7 +80,9 @@ ChildProcessLauncherHelper::LaunchProcessOnLauncherThread(
     const base::LaunchOptions& options,
     std::unique_ptr<FileDescriptorInfo> 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) {
   *is_synchronous_launch = true;
   ChildProcessLauncherHelper::Process process;
   process.process = base::LaunchProcess(*command_line(), options);