Capy, you're exactly right, that's the new intended way to get the
desired behavior. Evans, your way should work too on any OS, and if
it's what you want to do then more power to you! But since most users
are not going to want to modify shortcuts or deal with command line
parameters, I suggest to most people that they follow what Capy said.
If you already had a homepage set, then you should have gotten
migrated automatically to this new setting when you switched from
Chrome 18 to Chrome 19. However, there is a known issue where this
will not happen for certain users:
http://code.google.com/p/chromium/issues/detail?id=122936
-- If you are one of the unlucky few, I apologize, and you will have
to go in and change your settings manually to get back to the previous
behavior :(