Add a timeline view to about:net-internals.

chrome/browser/resources/net_internals/events_view.html

Index: chrome/browser/resources/net_internals/events_view.html
===================================================================
--- chrome/browser/resources/net_internals/events_view.html	(revision 110334)
+++ chrome/browser/resources/net_internals/events_view.html	(working copy)
@@ -33,15 +33,4 @@
 <!-- Splitter Box: This is a handle to resize the vertical divider -->
 <div id=events-view-splitter-box class=vertical-splitter></div>
 <!-- Details box: This is the panel on the right which shows information -->
-<div id=events-view-details-tab-handles>
-  <table class=events-view-tab-switcher cellspacing=0>
-    <tr>
-      <th id=events-view-details-log-tab>Log</th>
-      <td>&nbsp;</td>
-      <th id=events-view-details-timeline-tab>Timeline</th>
-    </tr>
-  </table>
-  <div class=events-view-tab-switcher-line></div>
-</div>
 <div id=events-view-details-log-box></div>
-<div id=events-view-details-timeline-box></div>