Fix call to Tabs.create when printing backup recovery keys
Fix call to Tabs.create when printing backup recovery keys

Fix #6150

Auditors: @bsclifton

It was crashing because it was treating this api as a promise but really it uses callbacks.

Note that the print operation won't actually work until #6159 is addressed.

timborden/browser-laptop,pmkary/braver,timborden/browser-laptop,luixxiul/browser-laptop,darkdh/browser-laptop,timborden/browser-laptop,diasdavid/browser-laptop,darkdh/browser-laptop,luixxiul/browser-laptop,pmkary/braver,pmkary/braver,timborden/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,pmkary/braver,darkdh/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,darkdh/browser-laptop