Since we've got the ui for the <input> element on fennec, we should enable the experimental forms.
So, Mark, with this pref enabled on Fennec, the browser will support <input type='number'> and later other input types (as they come). Actually, Fennec already has a UI for <input type='number'> (it is showing a number-only keyboard) so enabling this pref will only make all special features like form validation, stepDown(), stepUp() and .valueAsNumber to work in JS.
Raphael, could you write a patch (just change mobile/android/app/mobile.js) and ask a review to :mfinkle?
Created attachment 639828 [details] [diff] [review]
Comment on attachment 639828 [details] [diff] [review]
I'm looking forward to the cool new form features