(See http://www.chromium.org/blink#launch-process for an overview)

Change description:
-webkit-appearnace:none CSS property disables all of UA rendering of METER and PROGRESS elements.

Changes to API surface:
  * CSS -webkit-appearance

Links:
Public standards discussion: https://drafts.csswg.org/css-ui-4/#appearance-switching

Support in other browsers:
Internet Explorer: No
Firefox: No
Safari: No