Rated 4 out of 5 stars

Works well. But for the status bar feature, Autohide Statusbar is a more complete extension, I saw dmlite is for this purpose.
Also, this extension needs to measure time interval to autohide in miliseconds, not seconds, I don't understand why this setting is in seconds while the option to show is in miliseconds.
For those who want to hide more top toolbars, have an eye on Pimpoflage, and read my review ;)