Marking it as Untriaged as it is feature request.

The browsers above use different shortcuts, as shown in the screenshots.  Vivaldi uses ctrl-shift-v, which is reserved in Chrome as "paste without formatting".  Opera users ctrl-shift-ins, which makes some sense as an alternate to the IBM CUA shift-ins "paste" shortcut on Windows, but I don't know if it would translate to non-Windows.  Ctrl-shift-L as IE/Edge use is basically an alternate "focus address bar" shortcut and makes less abstract sense to me than e.g. ctrl-shift-K (an alternate "focus search bar" shortcut).  It also seems more likely to accidentally trigger (and confuse people).

The other question is whether we want to dedicate a keyboard shortcut to this at all.  Chrome has a lot of shortcuts, and an increasingly high bar for adding new ones.  It's not clear to me that this functionality deserves one when its primary goal was to serve users who didn't want to take their hand off the mouse to hit keyboard shortcuts; at that point it's basically a way of condensing five keys to three.

I would probably weakly support adding this if ctrl-shift-ins makes any sense on other platforms, particularly Mac.

 Issue 713868  has been merged into this issue.