>> In chromium-browser
>> Memory, CPU Nework and FPS for each Tab.
>> Press Shift-Esc
>>
>> http://malektips.com/google-chrome-memory-usage.html
>
> Yeah, I guess Chrome has some advantages.  Firefox is like
> a big bowl of soup and who knows what's in there.

I just discovered that about:memory is in there. It appears to show a
memory usage breakdown. It doesn't appear to break it down by tab
directly though.

Michael