I actually got the Android version 2 of MLO running on the Chromebook Pixel (original 2013 version). Here is what I did:
Installed "ARChon Packager" (available in the Google Play Store) on my Android phone. Used it to extract and package the MLO APK as a Chrome extension:
- start ARChon Packager
- select "Installed application"
- select "MLO 2" from the application list
- choose "Tablet mode" and "Landscape"
- I am not sure if you need "Enable access to apps files on PC/Chrome." or if it makes any difference
- move the resulting ZIP file onto your Chromebook (I put it into the Downloads folder)
I also installed another application from the Chrome store which required the ARC (Android Runtime for Chrome). There are a few apps which do that. In my case, I had installed AquaMail. This will cause the ARC to be installed on your Chromebook.
UnZIP the ZIP file that you created earlier.
In the Chrome browser, open chrome://extensions and enable the checkbox "Developer mode" ("Entwicklermodus" in the German version).
Then load unpacked extension ("Entpackte Erweiterung laden...") and choose the folder where you unpacked you MLO 2 ZIP file. I got a warning message but found that things would work anyway.
You should now be able to run MLO 2 either from the universal search or directly from the chrome://extensions page -- there is a "Start" ("Starten") link directly below the loaded extension.
These instructions should work on 64-bit Intel Chromebooks. On ARM or 32-bit systems you will need to read more of the documentation for ARChon, I believe there are some additional runtime libraries you will need to install. The author of ARChon has some decent web pages that explain this. I found that on the Chromebook Pixel (64-bit Intel) I do not need these additional libraries.
Once MLO 2 was running, of course I needed to activate my registration (copy/paste the activation key). Cloud sync etc. all works.
Happy Hacking.
Max