Closed frames shouldn't include newtab
Closed frames shouldn't include newtab

Fix #3258

Auditors: @bbondy

Test Plan: New Tab, close it, look in History menu to ensure it's not among recently closed

willy-b/browser-laptop,pmkary/braver,darkdh/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,dcposch/browser-laptop,jonathansampson/browser-laptop,jonathansampson/browser-laptop,pmkary/braver,darkdh/browser-laptop,luixxiul/browser-laptop,Sh1d0w/browser-laptop,MKuenzi/browser-laptop,willy-b/browser-laptop,timborden/browser-laptop,diasdavid/browser-laptop,MKuenzi/browser-laptop,pmkary/braver,timborden/browser-laptop,darkdh/browser-laptop,dcposch/browser-laptop,timborden/browser-laptop,pmkary/braver,dcposch/browser-laptop,jonathansampson/browser-laptop,MKuenzi/browser-laptop,darkdh/browser-laptop,diasdavid/browser-laptop,jonathansampson/browser-laptop,Sh1d0w/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,willy-b/browser-laptop,MKuenzi/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,willy-b/browser-laptop,Sh1d0w/browser-laptop,dcposch/browser-laptop,Sh1d0w/browser-laptop