The user agent style of <abbr> and <acronym> does not match specification

third_party/WebKit/Source/core/css/html.css

 /*
  * The default style sheet used to render HTML.
  *
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 905 matching lines @@
     -webkit-user-modify: read-only !important;
     box-sizing: border-box;
 }
 
 /* inline elements */
 
 u, ins {
     text-decoration: underline
 }
 
+abbr[title], acronym[title] {
+    text-decoration: dotted underline
+}
+
 strong, b {
     font-weight: bold
 }
 
 i, cite, em, var, address, dfn {
     font-style: italic
 }
 
 tt, code, kbd, samp {
     font-family: monospace
@@ skipping 179 matching lines @@
 @page {
     /* FIXME: Define the right default values for page properties. */
     size: auto;
     margin: auto;
     padding: 0px;
     border-width: 0px;
 }
 
 /* noscript is handled internally, as it depends on settings. */