The original extension has been remove from Chrome Web Store.
As since 2014-06-11, all extension that do not come from Chrome Web Store will not be run.
Then I forked this extension and I'm gonner to upload it to Chrome Web Store, thanks the original author!
The original extension URL should be https://chrome.google.com/webstore/detail/eeeapmhhmnofinfkieffibpodnfnmhge (but may can't be opened)