[vortico]

Unfortunately it seems that in WebExtensions, or at least Firefox and Chromium's current implementations of it, keybindings can only be captured by a plugin while a page is finished loading, and while the address bar is focused. There is also no way to do things like focus/defocus the addressbar, autohide the addressbar, autohide the tab bar, and many other small details that Qutebrowser effortlessly achieves.

[xwvvvvwx]

Obviously a hack, and only addresses one of your points, but the following works pretty well if you wanna focus / defocus the address bar in chrome with a shortcut:

https://superuser.com/questions/324266/google-chrome-mac-set...