Google recently launched voice search for Google
Google voice search for Chrome
Now there is an extension for it.You can add this extension here
It comes with pre-loaded services like Google, Wikipedia, YouTube, Bing, Yahoo, DuckDuckGo and Wolfram|Alpha.
The added advantage of this extension is,it integrates speech input buttons for text fields on all websites.After adding this extension to chrome you can fill (including registration)forms for any website.Let me show how it works.