Use ChannelMojo between the remoting network and desktop processes.

remoting/host/daemon_process.cc

Index: remoting/host/daemon_process.cc
diff --git a/remoting/host/daemon_process.cc b/remoting/host/daemon_process.cc
index cc9f76cdb0fceb0508c1527550add0ff76a98c05..0cf6a8143391d362a1ab402dd1acd25861e5f3d2 100644
--- a/remoting/host/daemon_process.cc
+++ b/remoting/host/daemon_process.cc
@@ -15,7 +15,6 @@
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
-#include "ipc/attachment_broker_privileged.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/host/branding.h"
 #include "remoting/host/chromoting_messages.h"
@@ -183,12 +182,9 @@ DaemonProcess::DaemonProcess(
       stopped_callback_(stopped_callback),
       weak_factory_(this) {
   DCHECK(caller_task_runner->BelongsToCurrentThread());
-
-  // TODO(sergeyu): On OSX AttachmentBroker depends on base::PortProvider
-  // implementation. Add it here when this code is used on OSX.
-#if !defined(OS_MACOSX)
-  IPC::AttachmentBrokerPrivileged::CreateBrokerIfNeeded();
-#endif  // !defined(OS_MACOSX)
+  // TODO(sammc): On OSX, mojo::edk::SetMachPortProvider() should be called with
+  // a base::PortProvider implementation. Add it here when this code is used on
+  // OSX.
 }
 
 void DaemonProcess::CreateDesktopSession(int terminal_id,