Split this change out of https://github.com/WebKit/WebKit/pull/895/ Basically the focus outline should be tied to appearance: textfield/searchfield instead of being hardcoded in the html.css UA sheet.
<rdar://problem/94116168>
Pull request: https://github.com/WebKit/WebKit/pull/1162
Pull request: https://github.com/WebKit/WebKit/pull/1740