Avoid a thread hop when initializing IPC to new processes

content/browser/child_process_launcher.h

Index: content/browser/child_process_launcher.h
diff --git a/content/browser/child_process_launcher.h b/content/browser/child_process_launcher.h
index 0ff1baa9eb04c0170d7d9f5e2eb97bad3dfb16bb..b406844abba149a545575fa2ac22f0a5a8fe8cec 100644
--- a/content/browser/child_process_launcher.h
+++ b/content/browser/child_process_launcher.h
@@ -133,7 +133,6 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
 
   // Notifies the client about the result of the operation.
   void Notify(internal::ChildProcessLauncherHelper::Process process,
-              mojo::edk::ScopedPlatformHandle server_handle,
               int error_code);
 
   Client* client_;
@@ -146,7 +145,6 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
   base::TerminationStatus termination_status_;
   int exit_code_;
   bool starting_;
-  std::unique_ptr<mojo::edk::PendingProcessConnection> pending_connection_;
   const mojo::edk::ProcessErrorCallback process_error_callback_;
 
   // Controls whether the child process should be terminated on browser