Fixing css conflict with displaytable.

chrome/browser/resources/options/extension_settings.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.
 */
 
 .details-view {
   padding-right: 10px;
 }
 
 .extension-list-item {
   padding-bottom: 7px;
   padding-top: 7px;
   width: 100%;
   -webkit-user-select: auto;
 }
 
 /* Get rid of display: table, which causes width issues. */
-.displaytable {
+#extension-settings .displaytable {
   display: block;
 }  
 /* Get rid of display: table row, which causes width issues. */
-.displaytable > section {
+#extension-settings .displaytable > section {
   display: block;
 }
 /* Get rid of display: table cell, which causes width issues. */
-.displaytable > section > * {
+#extension-settings .displaytable > section > * {
   display: block;
 }
 
 .extension-settings-content {
   border-bottom : 0px solid #eee;
   margin-top: 3px;
 }
 
 #extension-settings-list {
   min-height: 0;
@@ skipping 202 matching lines @@
 
 #get-more-extensions-container {
   display: -webkit-box;
 }
 
 #get-more-extensions {
   padding-left: 10px;
   padding-top: 5px;
   font-size: 15px;
 }