Use ChannelMojo between the remoting network and desktop processes.

remoting/host/ipc_desktop_environment.cc

 // Copyright (c) 2012 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 "remoting/host/ipc_desktop_environment.h"
 
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/process/process_handle.h"
 #include "base/single_thread_task_runner.h"
 #include "build/build_config.h"
+#include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_sender.h"
 #include "remoting/host/audio_capturer.h"
 #include "remoting/host/chromoting_messages.h"
 #include "remoting/host/client_session_control.h"
 #include "remoting/host/desktop_session.h"
 #include "remoting/host/desktop_session_proxy.h"
 #include "remoting/host/input_injector.h"
 #include "remoting/host/screen_controls.h"
 #include "third_party/webrtc/modules/desktop_capture/mouse_cursor_monitor.h"
 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
@@ skipping 133 matching lines @@
   }
 
   if (i != active_connections_.end()) {
     daemon_channel_->Send(new ChromotingNetworkDaemonMsg_SetScreenResolution(
         i->first, resolution));
   }
 }
 
 void IpcDesktopEnvironmentFactory::OnDesktopSessionAgentAttached(
     int terminal_id,
-    base::ProcessHandle desktop_process_handle,
-    IPC::PlatformFileForTransit desktop_pipe) {
+    const IPC::ChannelHandle& desktop_pipe) {
   if (!caller_task_runner_->BelongsToCurrentThread()) {
-    caller_task_runner_->PostTask(FROM_HERE, base::Bind(
-        &IpcDesktopEnvironmentFactory::OnDesktopSessionAgentAttached,
-        base::Unretained(this), terminal_id, desktop_process_handle,
-        desktop_pipe));
+    caller_task_runner_->PostTask(
+        FROM_HERE,
+        base::Bind(&IpcDesktopEnvironmentFactory::OnDesktopSessionAgentAttached,
+                   base::Unretained(this), terminal_id, desktop_pipe));
     return;
   }
 
-  base::Process desktop_process(desktop_process_handle);
   ActiveConnectionsList::iterator i = active_connections_.find(terminal_id);
   if (i != active_connections_.end()) {
     i->second->DetachFromDesktop();
-    i->second->AttachToDesktop(std::move(desktop_process), desktop_pipe);
+    i->second->AttachToDesktop(desktop_pipe);
   } else {
-#if defined(OS_POSIX)
-    DCHECK(desktop_pipe.auto_close);
-    base::File pipe_closer(IPC::PlatformFileForTransitToFile(desktop_pipe));
-#endif  // defined(OS_POSIX)
+    mojo::ScopedMessagePipeHandle closer(desktop_pipe.mojo_handle);
   }
 }
 
 void IpcDesktopEnvironmentFactory::OnTerminalDisconnected(int terminal_id) {
   if (!caller_task_runner_->BelongsToCurrentThread()) {
     caller_task_runner_->PostTask(FROM_HERE, base::Bind(
         &IpcDesktopEnvironmentFactory::OnTerminalDisconnected,
         base::Unretained(this), terminal_id));
     return;
   }
 
   ActiveConnectionsList::iterator i = active_connections_.find(terminal_id);
   if (i != active_connections_.end()) {
     DesktopSessionProxy* desktop_session_proxy = i->second;
     active_connections_.erase(i);
 
     // Disconnect the client session.
     desktop_session_proxy->DisconnectSession(protocol::OK);
   }
 }
 
 }  // namespace remoting