Android WebView Html5 Cache Size Limitation per application

Recently I'm doing some work on HTML5 cache. I've learned from this site http://ift.tt/1weG38b that HTML5 app cache could be limited under 5MB every site on some browers.

So I was wondering how large the cache size could be for android webview per application. Does it has a size limitation ? Does the limitation relevant to each application or to each site ？

Forgive my poor english. I would be appreciate if someone could help me out of this.