Chrome has a wealth of awesome diagnostics tools. The chrome://about URL will give you a full list of everything Chrome has to offer.
Is my JS leaking memory? Try chrome://memory-redirect/ (Also see the more basic Tools > Task Manager)
Want to see insane levels of detail on network connectivity? Try chrome://net-internals
Want to see which rendering features are hardware GPU accelerated? See chrome://gpu/
What DNS host names are cached or prefetched? Check out chrome://dns/