Use ChannelMojo between the remoting network and desktop processes.

remoting/host/daemon_process.h

Index: remoting/host/daemon_process.h
diff --git a/remoting/host/daemon_process.h b/remoting/host/daemon_process.h
index 38b84a4815fb479ede08c4a0723fdb42bd14f352..8a2c010f79cd52d722434e5c9ba660db77bea22c 100644
--- a/remoting/host/daemon_process.h
+++ b/remoting/host/daemon_process.h
@@ -18,8 +18,7 @@
 #include "base/observer_list.h"
 #include "base/process/process.h"
 #include "ipc/ipc_channel.h"
-#include "ipc/ipc_channel_proxy.h"
-#include "ipc/ipc_platform_file.h"
+#include "ipc/ipc_channel_handle.h"
 #include "remoting/host/config_watcher.h"
 #include "remoting/host/host_status_monitor.h"
 #include "remoting/host/worker_process_ipc_delegate.h"
@@ -82,8 +81,7 @@ class DaemonProcess
   // on success, false otherwise.
   virtual bool OnDesktopSessionAgentAttached(
       int terminal_id,
-      base::ProcessHandle desktop_process,
-      IPC::PlatformFileForTransit desktop_pipe) = 0;
+      const IPC::ChannelHandle& desktop_pipe) = 0;
 
   // Closes the desktop session identified by |terminal_id|.
   void CloseDesktopSession(int terminal_id);