Use ChannelMojo between the remoting network and desktop processes.

remoting/host/daemon_process_unittest.cc

Index: remoting/host/daemon_process_unittest.cc
diff --git a/remoting/host/daemon_process_unittest.cc b/remoting/host/daemon_process_unittest.cc
index 03c8c8dc625f5d6f02b248a674e6190fbf5c5622..4f5f0ef32353e43d5a7665eb29c5908aa205fc95 100644
--- a/remoting/host/daemon_process_unittest.cc
+++ b/remoting/host/daemon_process_unittest.cc
@@ -15,9 +15,9 @@
 #include "base/process/process.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
+#include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
-#include "ipc/ipc_platform_file.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/host/chromoting_messages.h"
 #include "remoting/host/desktop_session.h"
@@ -74,8 +74,8 @@ class MockDaemonProcess : public DaemonProcess {
   MOCK_METHOD1(Received, void(const IPC::Message&));
   MOCK_METHOD1(Sent, void(const IPC::Message&));
 
-  MOCK_METHOD3(OnDesktopSessionAgentAttached,
-               bool(int, base::ProcessHandle, IPC::PlatformFileForTransit));
+  MOCK_METHOD2(OnDesktopSessionAgentAttached,
+               bool(int, const IPC::ChannelHandle&));
 
   MOCK_METHOD1(DoCreateDesktopSessionPtr, DesktopSession*(int));
   MOCK_METHOD1(DoCrashNetworkProcess, void(const tracked_objects::Location&));