A good proxy switch extension for google chrome

This evening I have had to get Internet out of GWF. I'm using the security proxy server which named tor. Its using port 9050. It's really a good software. but the net speed is too slowly to dispirit! so I need to change it to no proxy mode when I visit some site could through GWF well. The best way is use firefox+AutoProxy. so I can't use my favorite browser google chrome. How could I did? Yes, extensions, the chrome extensions. I find a good proxy extension what named "proxy switch". proxy switch could save proxy profile as many as you want. even it could be automatic change proxy profile when your url is suit for the regular set. Sound is not cool? try it!