First off, this guide is not about how to download Linux on a Chromebook. This method works directly in chromeos. So here is what you have to do: Download apps called Twerk and ARC Welder on the chrome web-store. Now direct download the Infinite Black android apk. Twerk has instructions to upload the apk into it's app. Twerk will output a folder. You then need to go to more tools -> extensions and click Load unpacked extension. Load the folder Twerk outputted. Now a new extension will show up. Click the "Launch button". There you go!

Note: it seems that if you resize the window then you will get kicked from the game and have to re-log. The text is also a little wonky but still definitely readable. Have fun!