Implement a dummy host to do capturing and analysis only.

remoting/host/it2me_desktop_environment.h

Index: remoting/host/it2me_desktop_environment.h
diff --git a/remoting/host/it2me_desktop_environment.h b/remoting/host/it2me_desktop_environment.h
index 94f210ab1f4b7fb4156e63949531cd5b37474bfe..348b8ddf6cf8531f57a66f5c3e26f29cf9b9dd52 100644
--- a/remoting/host/it2me_desktop_environment.h
+++ b/remoting/host/it2me_desktop_environment.h
@@ -30,7 +30,8 @@ class It2MeDesktopEnvironment : public BasicDesktopEnvironment {
       scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
       base::WeakPtr<ClientSessionControl> client_session_control,
-      bool supports_touch_events);
+      bool supports_touch_events,
+      bool enable_user_interface);
 
  private:
   // Presents the continue window to the local user.
@@ -59,7 +60,13 @@ class It2MeDesktopEnvironmentFactory : public BasicDesktopEnvironmentFactory {
   std::unique_ptr<DesktopEnvironment> Create(
       base::WeakPtr<ClientSessionControl> client_session_control) override;
 
+  void set_enable_user_interface(bool enabled) {
+    enable_user_interface_ = enabled;
+  }
+
  private:
+  bool enable_user_interface_ = true;
+
   DISALLOW_COPY_AND_ASSIGN(It2MeDesktopEnvironmentFactory);
 };