They kinda do, actually - fn+left/right is home/end, fn+up/down is pageup/down, fn+backspace ("delete") is forward delete.

Really? They must be mislabeled on my keyboard then.

I absolutely love the home and end shortcuts. The one thing that does look odd with the Chrome shortcuts is the reliance on the Function keys - that as a touch typist - I find hard to get on with.