The Tobii Pro SDK and the eye tracker runtimes for Tobii Pro models has no support for android. You will have to build a bridge yourself using the Tobii Pro SDK on the windows machine, and then sending the eye tracker data over a protocol of your choice to the android device.
I’m not sure however what you mean with “the message that is typed via the eye tracker on Tobii”. Using the Tobii Pro SDK, what you get are gaze samples (with timestaps, and gaze and eyeposition coordinates), but they are not “typed”.
Can you explain in some more details what you are trying to achieve?