Disable "always allowed" checkbox in chrome://plugins for disabled plug-ins.

chrome/browser/resources/plugins.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. */
 
 body {
   margin: 10px;
   min-width: 47em;
 }
 
 a {
@@ skipping 134 matching lines @@
 .tmi-mode {
   -webkit-padding-start: 10px;
   background: rgb(244, 246, 252);
   border-bottom: 1px solid rgb(237, 239, 245);
   font-size: 89%;
   padding-bottom: 0.8em;
   padding-top: 0.8em;
   width: 100%;
 }
 
-.plugin-disabled > td {
+.plugin-disabled {
   background-color: #f0f0f0;
   color: #a0a0a0;
+}
+
+.plugin > tr > td {
   padding-bottom: 4px;
   padding-top: 5px;
 }
 
-.plugin-enabled > td {
-  padding-bottom: 4px;
-  padding-top: 5px;
-}
-
-.plugin-file-disabled {
-  background-color: #f0f0f0;
-  color: #a0a0a0;
+.plugin-file {
   padding-bottom: 5px;
   padding-top: 5px;
 }
-
-.plugin-file-enabled {
-  padding-bottom: 5px;
-  padding-top: 5px;
-}
 
 .plugin {
   border-bottom: 1px solid #cdcdcd;
 }
 
 .critical {
   color: red;
 }
 
 /* Indent the text related to each plug-in. */
@@ skipping 59 matching lines @@
   margin-top: 0.2em;
 }
 
 .always-allow {
   -webkit-margin-start: 30px;
 }
 
 button {
   font-size: 104%;
 }