The Browser object's 'Open URL' action should work in Crosswalk in r169+.
This isn't working for me lately recently with Crosswalk though I have gotten it to work before.
Right now my action looks like this:
Browser | Go to "<url here>" in a new window ("NewWindow")
It works on my computer but not Android device. Anyone have success with this recently? Maybe I need to configure my settings in the Intel XDK or something... will post update if I figure out the solution.
EDIT: Found the solution in another thread. You need to edit the "Intent (External Whitelist)" field in Intel XDK to either use * or if you want to specify exactly what you want to whitelist you can. Thanks to this thread for the solution: