On my desktop Firefox I have an add-on called view in IE in case I run into a page that only wants to display properly in IE, (mostly some Microsoft pages).
Android's "share" function, when using a browser, does not list another browsers as a share item. Say you prefer to use Chrome, which does not support Flash but you're on a page with a Flash video. You could cut and paste the URL into Firefox, since it supports Flash, but there is an easier way. Flashify.
See more here. Use Flashify for Android to send websites from one browser to another -