[whatwg] Two propositions for the autofocus attribute

[timeless]

fwiw, w/ the mobile browsers i work w/, random focus changes are
incredibly annoying.

we had a "manager" who insisted on a "feature" where the browser would
move focus to the urlbar in certain cases.

as a result users often have text they're typing spread across at
least two input areas.

needless to say, our users/engineers are not amused.

also note that dom insertion is somewhat random, so:

   <form>
     <input id=c1 autofocus>
   </form>
   <form>
     <input id=c2 autofocus>
   </form>

could either focus c1, or it could focus c2, depending on random-ish
things like packet size.

   <form>
     <input id=c1 autofocus>
   </form>
   <form>
     <input id=c2 autofocus>
   </form>
   <form>
     <input id=c1 autofocus>
   </form>
   <form>
     <input id=c3 autofocus>
   </form>
   <form>
     <input id=c4 autofocus>
   </form>
   <form>
     <input id=c5 autofocus>
   </form>
   <form>
     <input id=c6 autofocus>
   </form>
   <form>
     <input id=c7 autofocus>
   </form>

would not make me happy either.