You can switch some on by visiting ‘about:flags’ in Chrome. For the rest, you’ll have to start the browser from the command line and type the option manually.

On a mac you do that by typing

open -a /Applications/Google\ --args --YOUR-FLAGS-HERE

Here’s a list of Chrome command line switches

If you find you are always starting up Chrome with the same flags, it may be an idea to create an alias in Terminal: `nano ~/.profile

alias chromeflag='open /Applications/Google\ --args --YOUR-SWITCH-HERE'

From then on you can just type ‘chromeflag’ to start it up.