chromium/ui/webui/resources/css/throbber.css

/* Copyright 2012 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file. */

.throbber {
  background: url(../images/throbber_small.svg) no-repeat;
  display: inline-block;
  height: 16px;
  width: 16px;
}