Print Preview: Fixing tab order of hidden elements.

chrome/browser/resources/print_preview/print_preview.css

 /* Copyright (c) 2011 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 html {
   height: 100%;
 }
 
 body {
@@ skipping 148 matching lines @@
 span.hint.closing {
   -webkit-transition: margin 150ms, height 150ms, opacity 150ms;
   background: transparent;
   height: 0 !important;
   margin-bottom: 0;
   margin-top: 0;
   opacity: 0;
 }
 
 .collapsible {
-  -webkit-transition: color 200ms;
   height: 0;
   overflow: hidden;
 }
 
 .collapsible.visible {
   -webkit-animation-duration: 200ms;
   -webkit-animation-fill-mode: forwards;
   height: auto;
 }
 
@@ skipping 230 matching lines @@
 /* TODO(estade): unfork this code. */
 .button-strip {
   -webkit-box-orient: horizontal;
   -webkit-box-pack: end;
   display: -webkit-box;
 }
 
 html[toolkit=views] .button-strip {
   -webkit-box-direction: reverse;
 }