Fix dangerous download incognito icon problem.

chrome/browser/resources/downloads/downloads.css

 /* Copyright (c) 2012 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. */
 
 <include src="../search_header.css">
 
 #downloads-summary-text {
   font-weight: bold;
 }
 
@@ skipping 48 matching lines @@
   position: absolute;
   top: 2px;
   width: 32px;
 }
 
 html[dir=rtl] .icon {
   left: auto;
   right: 9px;
 }
 
-.download.otr > .safe,
-.download.otr > .show-dangerous {
+.download.otr > :-webkit-any(.safe, .dangerous) {
   -webkit-transition: opacity 150ms;
   background: url(../../../../ui/webui/resources/images/otr_icon_standalone.png)
               no-repeat right bottom;
   opacity: .66;
 }
 
-html[dir=rtl] .download.otr > .safe,
-html[dir=rtl] .download.otr > .show-dangerous {
+html[dir=rtl] .download.otr > :-webkit-any(.safe, .dangerous) {
   background-position: left bottom;
 }
 
-.download.otr > .safe:hover,
-.download.otr > .show-dangerous:hover {
+.download.otr > :-webkit-any(.safe, .dangerous):hover {
   opacity: 1;
 }
 
 .description.malware {
   color: rgb(196, 42, 23);
 }
 
 .progress {
   height: 48px;
   left: 0;
@@ skipping 62 matching lines @@
 }
 
 .safe .controls a {
   display: inline;
 }
 
 #downloads-pagination {
   -webkit-margin-start: 18px;
   padding-top: 24px;
 }