I managed to use leadbolt and open browser tabs in a new window in crosswalk canary.
First, to user leadbolt, you'll need to install pode's html iframe.
Now make an android app in leadbolt, add an html App Banner, i used 300x250 px and choose open in -current window-!
In pode's iframe put in this url:
and add your ad's id to the end.
Now when building with xdk you'll need to switch INAPPBROWSER permission on, this will open the ads in a browser tab inside the app and the back button will return to the game, also opening a new url in a new window with the browser object will give you a DONE button to return to the game and again you can just press back.
I hope you find this useful.
See how it works in my game:
https://play.google.com/store/apps/deta ... kam.jjjump
There is an ad when you die and when you quit, and sharing score to facebook opens in a new window.