What's the purpose of tinyhippos-injected script?-Collection of common programming errors

I noticed that Google Chrome appends a little JS script before the tag of any web document that I load (you can notice that if you look at the HTML code using inspect element):

   if (window.top.ripple) { window.top.ripple("bootstrap").inject(window, document);

Out of curiosity, what does it do? Googleing around did not help.