Crosh Window for Chrome
More About Crosh Window
You must have Secure Shell installed for this to work: https://chrome.google.com/webstore/detail/pnhechapfaindjhompbnflcldabbghjo
When clicked, this app opens a new crosh window without any chrome. This way, Ctrl-N/T/etc go to crosh and aren't picked up by Chrome.
Note: If you want, you can always open a crosh window by using Secure Shell directly. This app is merely a convenience for people who like it. See the Secure Shell FAQ for more details: