Google chrome now supports Greasemonkey. In a recent new Google Chromium, the Google Chrome open source project added supports for user script.
Before releasing the API google Chrome will provide native support for Greasemonkey scripts.
If you are using the Google Chrome Browser and wanna enable Greasemonkey support then you Need to use the flag: --enable-greasemonkey e.g. by appending it to the target of a shortcut.