How can I mimic Greasemonkey/Firefox's unsafeWindow functionality in Chrome?

Question

I\'m just fiddling around with user scripts in chrome right now, so please bear with my potential ignorance/idiocy.

In the page I\'m writing a script for, there is a

Answer 1

contentWindow was available in Chrome 3, but removed in Chrome 4. Only possible solution for Chrome 4:

location.href="javascript:(function(){ alert('Hello'); })()"