YouTabs 作者： Jiří Kuba

This extension is basically search bar for searching guitar tabs on 911tabs.com.
But when you are on supported site extension will prefill song name for search.
Supported sites:
https://www.youtube.com/
http://www.imdb.com/
http://www.csfd.cz/
Extension is free.
Source code: https://github.com/jiriKuba/YouTabs