Implement a dummy host to do capturing and analysis only.

remoting/host/it2me_desktop_environment.cc

Index: remoting/host/it2me_desktop_environment.cc
diff --git a/remoting/host/it2me_desktop_environment.cc b/remoting/host/it2me_desktop_environment.cc
index ffe768f02cd1b604ef06ccc067defa3fe1fdfe9e..3aba6b474a19293539b971c8bbbcbf33fe23b545 100644
--- a/remoting/host/it2me_desktop_environment.cc
+++ b/remoting/host/it2me_desktop_environment.cc
@@ -6,6 +6,7 @@
 
 #include <utility>
 
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
@@ -47,7 +48,8 @@ It2MeDesktopEnvironment::It2MeDesktopEnvironment(
                                                    client_session_control);
 
   // The host UI should be created on the UI thread.
-  bool want_user_interface = true;
+  bool want_user_interface =
+      !base::CommandLine::ForCurrentProcess()->HasSwitch("disable-it2me-ui");

[joedow, 2016/04/28 22:53:54]

Commented on elsewhere, but it seems odd to use a command line for this if it is
not going to be used on the command line.  I think a member is reasonable (you
might also want to rename it).

[Hzj_jie, 2016/05/03 19:07:05]

Done.

 #if defined(OS_MACOSX)
   // Don't try to display any UI on top of the system's login screen as this
   // is rejected by the Window Server on OS X 10.7.4, and prevents the