Add the http cache info to chrome://net2.

chrome/browser/resources/net_internals/main.css

 /*
 Copyright (c) 2010 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.
 */
 
 * {
   -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
 }
@@ skipping 167 matching lines @@
 
 #categoryTabHandles a.selected {
   position:relative;
   top: 1px;
   font-weight: bold;
   color: black;
 }
 
 #detailsLogBox,
 #detailsTimelineBox,
+#httpCacheTabContent,
 #proxyTabContent,
 #dataTabContent,
 #dnsTabContent,
 #testTabContent {
   overflow: auto;
   padding: 10px;
 }
 
 #proxyTabContent td,
 #proxyTabContent th {
   font-size: 12px;
 }