chrome/browser/resources/memory_internals/extension_view.html

<!-- Copyright 2013 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. -->
<h2>Extensions</h2>
<table class="list" id="extension-view">
  <tr class="header bottom">
    <th class="extension-id">PID
    <th class="extension-info">Name
    <th class="extension-memory">Private Memory [KB]
  <tr id="extension-template">
    <td class="extension-id">
    <td class="extension-info">
    <td class="extension-memory">
</table>